Identifying the barriers to implementing the Victorian Department of Education and Training guidelines regarding the provisions of nutrient dense food options in school canteens

Aims & rationale/Objectives : To identify barriers to the full implementation of new guidelines regarding school canteen menus launched by The Victorian Education Department in May 2004.
Methods : A self-administered questionnaire was sent to principals, business mangers and canteen managers of 13 secondary schools in South West Victoria covered by The Greater Green Triangle area (response rate 59%). The questions explored the canteen's role, operation, staffing and profits; existence and content of canteen policy; enablers and barriers to the sale of healthier foods; introduction and promotion of healthier foods; and perceived implications of banning less healthy foods.
Principal findings : The study identified several barriers to implementing healthy menus in school canteens, these being largely consistent with those found in other studies. The majority of schools reported they were making attempts to follow the guidelines for school food services, but were experiencing difficulty in proceeding to full implementation. The barriers identified through the study were student preference for less healthy options, concerns about profitability, lack of policy or its active communication and promotion at the school level and competition from other food outlets.
Discussion : There was evidence that healthy foods had not been actively promoted, suggesting that identification of student preferences as a barrier was based on perception rather than observation. The Victorian guidelines are effectively voluntary, with no accountability measures in place.
Implications : Research needs to be conducted to provide reliable and tested information about factors which impact on student choice. Schools would benefit from specialised assistance to formulate business plans for contemporary canteens selling healthy food and a clarification of government policy.
Presentation type : Poster

Challenging behaviour profiles of people with acquired brain injury living in community settings

Primary objective: To determine the type and severity of challenging behaviours among a cohort of brain-injured persons referred to a community-based behaviour management service; and to determine whether different behaviour profiles were associated with aetiology of brain injury.
Methods and procedures: A sample of clients (n= 190) referred to the ABI Behaviour Consultancy for assessment and treatment of challenging behaviours was evaluated using the Overt Behaviour Scale (OBS) and other measures of disability and support needs.
Main outcomes and results: The most common challenging behaviour categories were, in order of frequency: verbal aggression, inappropriate social behaviours and lack of initiation. Clients typically exhibited four categories of challenging behaviour and multiple kinds of the behaviours represented by each category. There was some evidence of differences in occurrence of specific behaviours associated with aetiology of brain injury, particularly for hypoxia and alcohol-related brain injury.
Conclusions: A systematic assessment of challenging behaviours in community settings has revealed the profiles of broad behavioural disturbance that can occur following ABI. Assessing the breadth of disturbance is important in understanding a client's presentation and thus planning appropriate behaviour management interventions.

Staff behaviour and resident engagement before and after active support training

Background Identifying the factors associated with greater increases in resident engagement has the potential to enhance the effectiveness of active support (AS).

Method Observational data from Stancliffe, Harman, Toogood, and McVilly's (2007) study of AS were analysed to evaluate amount of staff help, effectiveness of staff help, and staff use of praise.

Results Lag analyses showed that antecedent staff help was consistently followed by resident engagement at pre-test. This strong association did not increase significantly at post-test. Resident engagement was more likely to follow staff help than the other way around. There was an increase from pre-test to post-test in help and praise by staff. The higher absolute amount of praise was largely the result of the increase in staff help.

Conclusions The amount of staff help, its effectiveness, and use of praise by staff may each be important in increasing engagement. These factors should continue to be the focus of research attention and applied efforts to help ensure active support is consistently effective.

Accounting services and SMEs : an Australian study

Background: The observance of regulation has become a fundamental part of life for the conduct of business around the world. Governments and their duly appointed designates, acting in the interest of the collective public, have relied on regulation to moderate economic and social behaviour through the imposition and enforcement of rules. While it can be commonly accepted that such a prescriptive framework may be necessary for the achievement of desired economic and social outcomes, regulation does impose costs on society and on individual firms. These costs, which can include the costs for government departments to administer, the cost for firms to comply, and the multitude of indirect costs such as lost innovation and productivity or their interrelated opportunity costs, have received ample attention.

Accountants are key advisers to all businesses on all aspects of doing business, including regulation. As such, it is appropriate that ACCA has sponsored this study, which explores the regulatory issues facing SMEs and the critical role that accountants and other organisations play in helping SMEs be aware of, comply with and generally manage effectively the regulations that apply to their business.

ACCA has consistently argued for a balanced view to be taken on regulation, recognising that certain rules are necessary for the fair development of business and for employees’ rights. Yet at the same time, ACCA recognises that SMEs are likely to be disproportionately burdened by regulatory requirements and, as a consequence, it actively campaigns for fairness in regulation, recognising the issue as a significant factor in the success, productivity and growth of small businesses.

Overview: This study complements similar research commissioned by ACCA in the United Kingdom and Canada (Blackburn et al. 2006), with the aim of helping to provide a more international picture of the effects of regulation on adviceseeking by SMEs and how accountants can help SMEs meet their regulatory obligations.

The research commenced in November 2006 and was conducted over the Australian summer period 2006/7, among SMEs and accounting practices, as follows:

* telephone survey among 250 SMEs
* postal survey among 130 accounting practitioner firms.

Key findings: The SME section of this study revealed the following points.

* Most SMEs (between 70% and 80%), agreed that the regulations under review were reasonable, however there were significantly high levels of concern regarding:
* the number of regulations affecting their business (80%)
* staying up to date with changing regulations (80%)
* complexity of regulation or the ease of understanding regulations (77%)
* inequity, or the cost of regulation in proportion to the business (66%)
* duplication, or being required to provide the same information to more than one government department (55%).
* External accountants were the most common source of advice, being used by 72% of SMEs; this was followed by federal government agencies,    62%; trade or industry bodies, 61%; and a lawyer or solicitor, 53%.
* Highest levels of satisfaction with the advice provided were recorded for lawyers/solicitors (94%), banks (91%) and external accountants (90%).
* Overall, 80% of SMEs who had used accountants rated their service as excellent or good. Thirty per cent gave accountants an excellent rating.
* Accountants rated particularly well on the following attributes:
* the potential for a long-term relationship with the business (81% excellent/good)
* technical understanding of the regulatory requirements that apply to the business (79%)
* ability to meet the needs of the business (77%)
* understanding of the business of the SME and its operations (73%).

The survey of accounting practitioners produced the following information.
* The results indicate that SME firms with fewer than 10 employees are the main source of revenue for the respondent accounting practitioners.
* Virtually all accountants provide regulatory advice, primarily in the areas of taxation (particularly Goods and Services Tax, GST), and Do-It-      Yourself (DIY) superannuation requirements. These services provided the accountants with their largest business growth in the two years before the time of the survey.

Seventy-nine per cent of accountants referred their SME clients to external professional advisers. Their comments indicate (see Appendix 4) that some accountants consider their role to be as convenors or advisers for their SME clients. Importantly, according to the accountants, SME firms with fewer than 10 employees did not update their knowledge of regulatory requirements; they relied on their accountant for the right advice. The main types of external adviser to whom accountants referred their SME clients were lawyers and financial planners.

* Accountants expressed their concern regarding the complexity and amount of regulations affecting their SME clients.
* The accountants also stated that they would like to provide additional advice to their SME clients.
 
Confidence intervals – SME survey:  The survey sample size was 250 SMEs from the total of 1.2 million Australian SMEs. Any estimate of proportions agreeing or disagreeing with particular statements must be considered with respect to the margin of possible statistical error. Owing to the small sample size, generalising the results from this study to a wider population of SMEs may be constrained.

A 95% confidence interval of the sample mean for the following estimates based on a percentage agreement of 75% to a proposition with a sample size of 250 would be from 69.5% to 80.5%. The 95% confidence interval for estimates of any other value will diverge slightly in magnitude from the numbers given.

In general then we can be highly confident that the actual sample mean will be within approximately ± 5% of the figure given, with a survey of this size. Confidence intervals – acounting practitioner survey IBISWorld estimates reveal a figure of 9,222 accounting practices in Australia as at June 2006 (IBISWorld 2007). The sample size of 133 accounting practitioners gives a 95% confidence limit that the results reported from the mail-out survey are within the ± 5% confidence interval of the reported values.

Conclusions:  This report describes the results of two parallel surveys undertaken on the impact of business regulation on small and medium-sized enterprises in Australia and on the perceptions of accounting firms about the ways in which the regulatory impact on the SME sector drove their business.

The survey of SMEs provides empirical support for many of the concerns raised with the Regulation Taskforce, which reported to the Australian government in 2006. Many businesses are concerned about the volume and complexity of government legislation as it applies to their business. They are concerned that they are unable to keep up with new legislation and that there is apparent duplication of reporting requirements across the various tiers of government.

The survey of accountants revealed that accounting firms derive a significant proportion of their revenue from SMEs. While the SMEs are concerned with regulatory changes, the accountants surveyed reported that the major growth areas in their businesses were in what could be seen as traditional accounting areas of tax and superannuation. Some SMEs sought advice on areas such as employment law, environmental regulation and health and safety but it appears that many accountants refer their clients to specialists in these areas. Recent changes to the laws regarding financial planning in Australia may lead to changes in the market for financial advice in Australia, with many accountants apparently regarding this as a key driver of future business opportunities.

The surveys were conducted using a similar instrument to similar surveys conducted in the UK and Canada and reported in Blackburn et al. (2006). Comparisons of the Australian survey results with those from the UK and Canada seem to support the perception that Australian business is not over-regulated, but the SME sector is concerned with the volume and complexity of regulation. This suggests that the SME sector wants to see improvements to Australia’s regulatory regime as a result of the work of the Regulation Taskforce undertaken in 2005/6. In its response to the work of the Taskforce the government agreed with 158 of the 178 specific recommendations of the Taskforce. This now needs to be followed through at all levels of government.

Accountants in all three countries understand their SME clients’ concerns with the burden of regulation and they are prepared to advise their clients where appropriate or refer them to specialist advisers. Most business growth for accountants has come from the taxation area. Very few accountants in the UK or Australia specialise in providing advice in the areas of environmental regulation or health and safety regulation.

International comparisons show that in all three countries accountants are generally highly regarded by SMEs for their professionalism and competence. The major area of client concern is the value for money offered by the accountant’s service. In an era of rapidly shifting professional and technical boundaries, accountants need to be more strongly attuned to levels of client satisfaction. Lawyers, financial planners and a plethora of specialist advisers operate in the business services market and if they have an opportunity to take business from accountants by competing on price they may well do so. This suggests a stronger role for professional accounting bodies in monitoring the broader business services market for opportunities and threats on behalf of their membership.

Prison officer's beliefs regarding self-harm in prisoners : an empirical investigation

The prevention of self-harm and suicide in prisoners depends on good interaction between the individual prisoner and prison staff. Staff perceptions of prisoner self-harm are likely to be a crucial factor influencing this interaction. The aim of the present study was to determine correctional officers' perception of the causes and functions of self-harm, and the effects of incident severity and repetitiveness on perceptions. A sample of 76 correctional officers was presented with a vignette depicting a self-harm in which the severity and repetitiveness of the incident was systematically altered. Officers' rated both the causes and functions of the behaviour. Four attributional dimensions were identified by factor analysis. These factors related primarily to personal factors about the individual prisoner. Staff perceived the functions of self-harm to be communicative rather than to commit suicide. Perceptions were not affected by severity or repetitiveness information, except for high severity leading to a greater perception of suicidal intent. Initiatives to help staff work more effectively and therapeutically with distressed prisoners are therefore likely to impact positively upon rates of self-harm.

Adaptation to mandated restrictions on smoking in dining areas : results of an Internet survey

Objective : The study aimed to measure changes in dining behaviour associated with the introduction of smoking restrictions on July 1, 2001, to describe strategies adopted by smokers and non-smokers to adapt to the changes, and to describe some of the thoughts, feelings and beliefs underlying the adaptations that people make in response to the introduction of new restrictions.

Method : Data were collected in a longitudinal study with repeated measures of a total of 257 respondents before and after the introduction of the restrictions, using a questionnaire administered via the Internet. Data collection occurred on seven occasions between April 2001 and March 2002. In addition, a series of in-depth telephone interviews was conducted among a group of 31 smokers and non-smokers, who were interviewed once before and twice after the introduction of the bans.

Results : Dining patterns, dining frequency, restaurant choice and expenditure on a meal did not change among either smoking or non-smoking patrons following the introduction of the law. The majority of Victorians approved of smokefree dining legislation before its implementation, and agreement with the law increased sharply and significantly among both smokers and non-smokers immediately following the introduction of the policy, remaining at high levels for the duration of the study period.

Conclusions : These findings suggest there was rapid adaptation to and acceptance of the restrictions among both smokers and non-smokers, and are supported by evidence from other jurisdictions, both interstate and internationally, regarding the introduction of smokefree dining.

The relationship between environmental activism, pro-environmental behaviour and social identity

Research on environmental activism remains poorly integrated and ill-defined and to date, there has been little examination of the relationship of environmental activism, pro-environmental behaviour and social identity. 131 students from an Australian University (M = 25.04 years old, SD = 8.17) voluntarily participated by returning an anonymous questionnaire containing an environmental activism scale, a pro-environmental behaviour scale and a social identity scale. The results revealed that while there was a significant relationship between social identity and environmental behaviour, only the citizenship component of environmental behaviour significantly predicted environmental activism. In other words, the relationship between social identity and environmental activism was indirect. This research presents the opportunity for further exploration of these relationships and to further investigate their relationship to inter-group processes.

Can the electricity market be characterised by asymmetric behaviour?

In this paper, we test for asymmetric behaviour of industrial and residential electricity demand for the G7 countries, using the entropy-based test for symmetry suggested by [Racine, J., and Maasoumi, E., 2007. A versatile and robust metric entropy test of time-reversibility, and other hypotheses. Journal of Econometrics 138(2), 547–567; Racine, J., and Maasoumi, E., 2008. A robust entropy-based test of asymmetry for discrete and continuous processes. Econometric Reviews 28, 246–261], the Triples test of [Randles, R., Flinger, M., Policello, G., and Wolfe, D., 1980. An asymptotically distribution-free test for symmetry versus asymmetry. Journal of the American Statistical Association 75, 168–172] and the [Bai, J., and Ng, S., 2001. A consistent test for conditional symmetry in time series models. Journal of Econometrics 103, 225–258] test for conditional symmetry. Using data that spans over three decades, we find overwhelming evidence of conditional symmetry of residential and industrial electricity consumption. This finding implies that the use of econometric tests based on linear data generating processes is credible.

Environmental variation and the maintenance of polymorphism : the effect of ambient light spectrum on mating behaviour and sexual selection in guppies

The intensity of sexual selection is influenced by environmental conditions because these conditions influence signal propagation and the risks of the signal being exploited by predators and parasites. We explore the possibility that spatial or temporal heterogeneity in environmental signalling conditions (in this case light spectrum) may induce fluctuating sexual selection on male behaviour and ornamentation in guppies. We used shade cloth and filters to experimentally manipulate light spectrum, mimicking conditions found naturally: early morning/late afternoon light (SC treatment), midday forest shade (F89 filter treatment) and midday woodland shade (F55 filter treatment). Females were more responsive to male courtship and males were less likely to attempt sneak copulations under F55 light than the other two treatments. By contrast, male display rate was not influenced by treatment. Females tended to prefer the same males under SC and F55 light, but attractiveness in these treatments was unrelated to attractiveness under F89 light. There were similarities among treatments in the traits that females preferred: females preferred males with larger areas of orange in all three treatments. There were, however, also some differences, including preference for larger males under F89 light and for smaller males under the other treatments. Overall, the influence of ambient light spectrum on the relative importance of mate choice and male sneak copulation may have important implications for the mode and strength of sexual selection in different environments. The findings on attractiveness and preference functions, however, suggest that light spectrum only weakly affects the direction of sexual selection by female choice.

Guideline-based programs in the treatment of complex PTSD

The term “post-traumatic stress disorder” (PTSD) is a relatively new diagnostic label, being formally recognized in 1980 in the Diagnostic Statistical Manual for Psychiatric Illness – Third Edition (DSM-III) of the American Psychiatric Association (APA, 1980). Complex Post-Traumatic Stress Disorder (CP) is a more recently discussed, and newly-classified, phenomenon, initially discussed in the early 1990s (Herman, 1992a). Thus, as research into effective treatments for CP is sparse, the treatment of CP is the topic of this study, in which a guideline-based treatment program developed by the researcher for the treatment of CP is implemented and evaluated. Ten individuals participated in this study, undertaking individualized, guideline-based treatment programs spanning a period of six months. In providing background information relevant to this study, an explanation is provided regarding the nature of CP, and the reasons for its consideration as a separate phenomenon to PTSD. The adequacy of the PTSD formulation in enabling effective assessment and treatment of CP is also explored, with endorsement of previous researchers’ conclusions that the CP construct is more useful than the PTSD construct for assessing and treating survivors of long-term and multiple forms of abuse. The PTSD classification is restrictive, and not necessarily appropriate for certain forms of trauma (such as prolonged trauma, or multiple forms of trauma), as such trauma experiences may lead to specific effects that lay outside those formerly associated with PTSD. Such effects include alterations in affect regulation, consciousness, self-perception, interpersonal relationships, and in systems of meaning. Following discussion regarding the PTSD/CP classification, an examination of treatment methods currently used in the treatment of PTSD, and a review of treatment outcome studies, takes place. The adequacy of primary treatment methods in treating CP symptoms is then examined, with the conclusion that a range of treatment methods could potentially be useful in the treatment of CP symptoms. Individuals with a diagnosis of CP may benefit from the adoption of an eclectic approach, drawing on different treatment options for different symptoms, and constantly evaluating client progress and re-evaluating interventions. This review of treatment approaches is followed by details of an initial study undertaken to obtain feedback from individuals who had suffered long-term/multiple trauma and who had received treatment. Participants in this initial study were asked open-ended questions regarding the treatment approach they had experienced, the most useful aspect of the treatment, the least useful aspect, and other strategies/treatment approaches that may have been useful – but which were not used. The feedback obtained from these individuals was used to inform the development of treatment guidelines for use in the main study, as were recommendations made by Chu (1998). The predominant focus of the treatment guidelines was “ego strengthening”, a term coined by Chu (1998) to describe the “initial (sometimes lengthy) period of developing fundamental skills in maintaining supportive relationships, developing self-care strategies, coping with symptomatology, improving functioning, and establishing a positive self identity” (p.75). Using a case study approach, data are then presented relating to each of the ten individuals involved in the treatment program: details of his/her trauma experience(s)and the impact of the trauma (as perceived by each individual); details of each individual’s treatment program (as planned, and as implemented); post-treatment evaluation of the positive and negative aspects of the treatment program (from the therapist’s perspective); and details of the symptoms reported by the individual post-treatment, via psychometric assessment and also during interview. Analysis and discussion of the data relating to the ten participants in the study are the focal point of this study. The evaluation of the effectiveness of each individual’s treatment has been based predominantly on qualitative data, obtained from an analysis of language (discourse analysis) used by participants to describe their symptoms pre- and post-treatment. Both blatant and subtle changes in the language used by participants to describe themselves, their behaviour, and their relationships pre- and post-treatment have provided an insight into the possible changes that occurred as a result of the treatment program. The language used by participants has been a rich source of data, one that has enabled the researcher to obtain information that could not be obtained using psychometric assessment methods. Most of the participants in this study portrayed notable changes in many of the CP symptoms, including being more stable and having improved capacity to explore their early abuse. Although no direct cause-effect relationship between the participants’ treatment program and the improvements described can be established from this study, the participants’ perception that the program assisted them with their symptoms, and reported many aspects of “ego strengthening”, is of major importance. Such self-perception of strength and empowerment is important if an individual is going to be able to deal with past trauma experiences. In fact, abreactive work may have a greater chance of succeeding if those who have experienced long-term or multiple trauma are feeling more empowered, and more stable, as were the participants in this study (post-intervention). In concluding this study, recommendations have been made in regard to the use of guideline-based treatment programs in the responsible treatment of CP. Strengths and limitations of this study have also been highlighted, and recommendations have been made regarding possibilities for future research related to CP treatment. On the whole, this study has supported strongly other research that highlights the importance of focusing on “ego strengthening” in assisting those who have suffered long-term/multiple trauma experiences. Thus, a guideline-based program focusing on assisting sufferers of long-term trauma with some, or all, of the symptoms of CP, is recommended as an important first stage of any treatment of individuals who have experienced long-term/multiple trauma, allowing them to develop the emotional and psychological strength required to deal with past traumatic events. Clinicians who are treating patients whose history depicts long-term or multiple trauma experiences (either from their childhood, or at some stage in their adult life) need, therefore, to be mindful of assessing individuals for symptoms of CP – so that they can treat these symptoms prior to engaging in any work associated directly with the past traumatic experiences.

Studentship and oppositional behaviour within physical education teacher education : a case study ; and, Between the rings and under the gym mat : a narrative

This thesis represents a part of a program of study that is reaching a closure. The broadest brush that could be applied to my work is that it concerns Physical Education Teacher Education (PETE), that it focuses on aspects of professional socialisation, and that it involves various case studies utilising naturalistic inquiry. Whilst it would be impossible and naive to believe that the reading of these texts will produce the meanings that I encourage, or have internalised, nevertheless the order of reading is at least something that I can argue for. Read in the order I suggest throughout the thesis I am hopeful that my subjectivities, and the learning and understandings I have reached may become clear. The purpose of this two part thesis is an exploration of the interplay or dialectic that exists between PETE students, academic staff and the subject matter within PETE. I have had to come to understand the limitations and advantages of insider research as the work has been completed at my University in the School of Human Movement and Sports Science where I have worked for twenty years. This thesis examines the extent to which studentship and oppositional behaviour underlies the dialectic that exists between the students and the various discourses within the program. I have written the study in two very different formats, one, a collection of stories about PETE and the other, an interpretative case study conducted during 1993 and 1994. Within the case study, studentship and oppositional behaviour were viewed as a measure of the extent to which students react and push against the forces of socialisation within their PETE program that is seen to represent dominant discourses, The following broad research questions were considered to enable the above analysis. 1. What is the nature of studentship and oppositional behaviour in a high status subject within PETE compared to a subject that is seen by students to be of little relevance and of low status? 2. How are studentship and oppositional behaviour related to students subjective warrants? 3. How are the studentship and oppositional behaviours exhibited by students related to the pedagogy and discourses reflected in the knowledge, beliefs and practices within the two sites. The starting point for this research was a study conducted as a totally separate research task (Swan, 1992) that investigated the hierarchies of subject knowledge within a PETE site and investigated the influence of such hierarchies upon student intention. A great deal of meta analysis exists about the manner in which a technocratic rationality pervades PETE but very little case study material of what this means to students and academic staff within such institutions is available. The stories in Between The Rings And Under The Gym Mat, which is the second part of this thesis, represent ‘the data’ differently from the case study, but they speak their own truth. At times the nature of the story is indistinguishable from the reality of the case study. Wexler (1992) undertook an ethnographic study about identity formation in three very different high schools, and published the findings in a book entitled Becoming Somebody. His introductory words about the nature of the social story he tells, are significant to this study and story. Social history is recounted by creative intervention that can only be made from culturally accessible materials. Ethnography is neither an objective realist, nor subjective imaginist account. Rather, it is an historical artefact that is mediated by elaborated distancing of culturally embedded and internally contradictory (but seemingly independent and coherent) concepts that take on a life of their own as theory. So, this is not ‘news from nowhere,’ but a theoretically structured story where both the story and its structure are part of my times. (p.6) The case study before you is organised with an analysis of studentship and oppositional behaviour detailed in chapter one. The following chapter conceptualises studentship and oppositional behaviour in relation to particular themes of professional socialisation, resistance to oppression and youth culture. Chapter three locates the case study to the major paradigmatic debates about the value and nature of the subject matter content within PETE, Chapter four outlines the case site, the research process and the research dilemma’s confronted in this study. The remaining three chapters are the case record as I can best understand it. In Between the Rings and under the Gym Mat (part B) the story most directly concerned with studentship and oppositional behaviour, is called Tale of Two Classes’. It takes on a very different reality to the case study (part A) and much can be said about the reality of lived experience which can be portrayed in narrative form as opposed to a clinical case study. Many of the other stories pose similar images that are contradictory and never quite complete. I have written a separate methodological section for the narrative stories. It is my intention that the case study and the series of stories should be viewed as essentially complementary, but also a discrete representation of a part of PETE. As part of the Ed D program I have undertaken four discrete research tasks as the starting point for this research I have referred to the first one (Hierarchies of Subject knowledge within PETE). I also undertook an action research project about ‘Teaching Poorly by Choice.’ A further piece of research was a somewhat reflective effort to draw together what this has all meant to me from a subjective and reflexive perspective. Such efforts are often seen as being self indulgent, as subjectivity in the form of lived experience sits uneasily in academia. A final paper involved an evaluation of Between the Rings and Under the Gym Mat from a pedagogical perspective by PETE professionals around the world. And that's the way things turned out.

Nutrition, growth and production of Cherax Destructor Clark, 1936 (Decapoda, Parastacidae)

In this study the nutrition, growth and production of C. destructor was examined. Selected nutritional requirements of juvenile animals were determined under controlled conditions with the aim of developing a pelleted diet for use in hatcheries, nurseries and growout situations. The best developed diet was assessed for its potential as a supplementary feed for animals cultured in earthen environments. The protein requirements were first determined simultaneously with an evaluation of the effect of replacing animal protein (fishmeal) by soybean meal. Juveniles were reared communally for 59 d on isoenergetic diets containing 15-30% protein and graded levels of soybean meal (0-60%, of protein). When soybean meal was included at a level of 40-60%, growth was reduced relative to that achieved with control diets containing 15% and 20% protein, but this was not the case at a 20% soybean meal substitution level. A two-way interaction occurred between dietary protein and soybean meal content. Higher protein feeds enabled higher soybean meal inclusion levels without significantly affecting growth. Protein increases of 5% produced better growth at the 40% and 60% soybean meal substitution levels. This effect was less pronounced in the control and the 20% soybean meal diets. Carcass %protein increased and %lipid decreased as dietary protein increased. A similar effect occurred by increasing the soybean meal level to 60%. No obvious trend in carcass moisture, energy, and ash occurred. A protein requirement of 30% was apparent when fish meal and soybean meal were included in diets at levels of 20% and 24% (dry matter) respectively. Alternative protein sources to soybean meal were subsequently identified. Juveniles were maintained for 12 weeks on isoenergetic diets containing 30% protein and differing in the primary source of protein used, with meat, snail, soybean, yabby, and zooplankton meals comprising the major protein ingredient. No significant difference occurred in mean weight (MW), percentage weight gain (%WG), SGR or survival among diets. Food conversion ratios (FCR) were low, with a minimum value of 0.95 for the snail-based diet. The apparent net protein utilisation (ANPU) varied from 29.6% (zooplankton-based diet) to 41.2% (snail-based diet). Carcass composition varied with diet, with the greatest difference occurring in carapace colour. Animals fed the zooplankton-based diet developed the strongest, most natural pigmentation. A new combination of previously used protein-based ingredients was subsequently tested with reference to two yabby species, Cherax albidus and Cherax destructor, that were grown simultaneously in identical conditions. Juvenile male animals were reared individually for 20 weeks on isoenergetic diets containing 15% or 30% protein with fish meal, soybean meal, yabby meal and wheat products forming the basis of the diets. C albidus grew the fastest and utilised the food the most effectively. Carcass composition was influenced by diet with the 30% protein diet resulting in an increase in carcass protein and ash and a decrease in carcass lipid and energy relative to the low protein diet. Carcass moisture and calcium were not affected by diet. The intermoult period (IP) was highly dependent on the premoult weight (W) but the mean moult increment (WI, as weight) was independent of the PM. The orbital carapace length (OCL) and the abdominal length (ABL) %moult increments generally declined with an increase in PM whereas the propus length (PL) %moult increment generally increased. The IP, WI, %OCL, %ABL, and %PL moult increments varied according to diet and to species. Elevated dietary protein caused a reduction to the IP (for similar sized animals) by 11 d and 7 d and an increase to the WI by 85% and 81% in C. albidus and C destructor respectively. Dietary induced morphological changes also occurred. Animals of a standard OCL (both species) had significantly larger abdomens when fed the higher protein diet. Growth on the best developed diet was compared to the growth obtained on a natural diet of freshwater zooplankton. Juveniles were reared individually for 12 weeks on the two diets. The MW, %WG and SGR were higher for the zooplankton diet. Carcass composition was influenced by diet and the zooplankton fed animals had a higher carcass %protein, %lipid, %ash and %fibre content and were more richly pigmented than animals fed pellets. The IP and the WI were highly dependent on the PM and varied according to diet; feeding with zooplankton reduced the IP by 1.2 days and increased the WI by 13.7% compared to pellets. Nutrient digestibility was determined for the pelleted diets evaluated in the growth trials. Protein digestibility (PD) and dry matter digestibility (DMD), using chromic oxide (Cr2O3) as an exogenous marker, were high for all diets, at around 93% and 83% respectively. Ash digestibility varied considerably from 17% to 73% for the snail and yabby meal diets respectively. Crude fibre digestibility was around 50% and probably indicates cellulase activity. Alternative markers to Cr2O3 were evaluated. Ash was considered to be the most suitable alternative to Cr2O3, providing a reasonable, albeit lower, estimate of nutrient digestibility. Cr2O3 and ash were preferentially excreted whereas fibre was retained in the digestive system for a longer period, consequently, the collection of a particular fraction of the deposited faeces (late or early) substantially affected the digestibility coefficients. In earthen-based environments, animals fed the best developed diet were compared to animals cultured using a forage crop of clover (Trifolium repens). Three supplementary feeding strategies representing varying levels of management intensity were evaluated in a series of trials conducted in ponds and pond microcosms. Growth on pellets consistently exceeded that obtained with the forage crop, with final MW being 67-159% higher than that using clover and appeared to be the result of direct pellet consumption and from a pellet fertiliser effect (on the sediment). Within-pond DMD and PD were high and similar for each treatment (DMD = 51-58%; PD = 89-92%). In the control pond, DMD and PD increased with each successive flood. The faecal egestion rate (PER) decreased with each successive flood in all ponds, and is negatively related to animal weight and to foregut fullness (FF) according to power curves. FF was consistently lowest in the control pond. Mean FF was 48.5%, 62.3%, and 26.7% for the pellet, crop and control ponds respectively. FF increased to the third flood in each pond. The foregut protein content was high in all samples and the mean values were 33.9%, 32.7% and 35.6% for the pellet, crop and control ponds respectively. Foregut ash was highly variable within each pond and is inversely related to the foregut protein content. In the control and pellet ponds the highest foregut ash content occurred during flood 1. The culture system (aquaria or pond) strongly influenced the composition of the foregut content. The foregut of animals fed the manufactured diet (B2) in ponds contained approximately 176% more ash and 5% more protein than the foregut of animals fed in bare-bottom tanks. The FF of the tank fed animals was approximately 45% higher than the FF of pond fed animals after a similar feeding period. Base-line yields for extensive production systems appeared to be around 400kg ha-1. The supplementary addition of T. repens produced yields of approximately 635kg ha-1 (in ponds) to around 1086kg ha-1 (in tanks). The sequential addition of cut-clover to tanks stimulated growth to levels approaching those achieved on pellets. Yabbies stocked into ponds at 15-20 m-2 with a mean weight of 2.67g and fed a 30% protein pelleted diet for 100 d, resulted in a yield of approximately 1117kg ha-1, but only 2% of the population were above a marketable size of 50g. The feed utilisation indices were better for animals reared on pellets in bare-bottom tanks than in earthen environments, indicating some degree of pellet wastage when natural feeds are simultaneously present. High apparent food conversion ratios and low protein efficiency ratios occurred when the forage crop was provided. A considerable quantity of the dry matter and protein content of the forage crop was either inefficiently utilised or directed into other production pathways. Sowing a forage crop into pond microcosms to which a pelleted diet was also provided, did not enhance growth performance. Pelleted feed inputs at a rate of approximately 129g m-2 to 198g m-2 (dry matter) and 38g -2 to 64g m-2 (protein) over 70-100 d resulted in acceptable growth and feed utilisation indices for animals reared in ponds and pond microcosms. Forage crop inputs of approximately 533g m-2 to 680g m-2 (as dry matter) or 84g m-2 to 177g m-2 (as protein) over a 70-100 d period produced reasonable growth rates but poor feed utilisation indices. Low inputs of dry matter (from 113-296g m-2) and protein (from 24-54g m-2) from clover were sufficient to maintain high growth rates in pond microcosms for around 28 d. In ponds, a very low level of 21g m-2 (dry matter) and 4.3g m-2 (protein) was sufficient for around 3 weeks. Forage depletion appeared to occur beyond week 3-4 and was probably a major growth limiting factor. The mean hepatosomatic index (HSI) was 9.44, 7.68, and 6.79 for the pellet, crop, and control ponds respectively. The relationship between hepatopancreas weight and overall animal weight was significantly different between treatments. The hepatopancreas of pellet-fed animals had the highest %lipid and lowest %ash, %protein, %carbohydrate and %moisture content. In terms of absolute quantities, the only major difference in hepatopancreas composition between treatments occurred for lipid and dry matter content. The hepatopancreas of the pellet-fed animals was a cream/cream-yellow colour and was very fragile, whereas in the other ponds it was a more ‘natural’ bright yellow colour and was structurally more robust. C. destructor has a capacious foregut, being approximately 5 times the volume of similar sized Penaeids. The foregut volume (V, ml) of the yabby is related to animal weight (W, g) according to V = 0.048 W0.9543. Animals that were starved for 96 h and then fed diet B2 were almost completely foil after 30 min. The ‘apparent enzymatic response’ of animals fed various natural and artificial diets in tanks was evaluated. Nutrient processing time and the enzymatic response following ingestion appeared to be regulated by the chemical and physical properties of the diet. For the natural feeds, foregut protein was 1.2% higher (for zooplankton) and up to 300% higher (for detritus) than dietary protein, whereas ash was 7.5% higher (zooplankton) and 46-63% lower (detritus) than dietary ash. For animals fed diet B2 after 48 h without food, FF was approximately half that of 96 h starved animals after a similar feeding period but foregut protein and ash contents were similar. Finally, the physiological and morphological attributes elucidated in this study are discussed with reference to the ecology of the yabby. High growth rates, excellent feed utilisation indices and high digestibility coefficients for a wide range of diet-types illustrate nutritional flexibility. A capacious foregut, a large hepatopancreas with a high energy storage capacity, the ability to partition and preferentially excrete the low nutrient value inorganic component of the diet, the capacity to alter body form, nutrient processing time and enzymatic secretions in relation to diet-type, and modified behaviour according to feed availability also demonstrate plasticity/adaptability/flexibility. The combined effect of these important characteristics ensures survival in environments that may be adverse and highly variable in terms of nutrient availability. Collectively the morphological and digestive traits elucidated in this study reflect the generalist-type nature of C destructor and indicate that a polytrophic classification still seems appropriate. Several priority areas for further nutrition research are identified and recommendations are made regarding the best-practices to use in the commercial culture of the yabby. Of paramount importance is the further clarification of the nutritional requirements and feeding preferences of animals in various phases of development.

Contextual influences on femoral injecting behaviour in the UK Randomised Injectable Opiate Treatment Trial

Femoral injecting amongst participants of the Randomised Injectable Opiate Treatment Trial (RIOTT) has created a number of procedural, ethical and medical dilemmas for staff, clients and researchers. This study investigated the effect on femoral injecting behaviour of a drug consumption room (DCR) in the context of the RIOTT currently being conducted at the Maudsley Hospital, South London. It uses in-depth qualitative interviews with 10 RIOTT clients to investigate the effects of this environmental intervention on the injecting behaviour of individuals who injected femorally upon treatment entry. Interviewees were selected on the basis of membership in one of four groups: 1) never injected femorally, 2) injected femorally prior to trial and have ceased completely, 3) injected femorally prior to trial and have ceased within the DCR, and 4) have continued to inject femorally the inside and outside clinical settings. The paper uses case studies and clinical protocols to interpret changes in behaviour in injecting behaviour in regards to the goals of treatment. Preliminary results indicate that there are major advantages and disadvantages associated with femoral injecting. The most commonly reported reason for commencing femoral injecting was a lack of other viable veins and interviewee narratives illustrate how this issue use addressed within the context of the DCR. Within this setting, the paper explores the boundaries of harm reduction in the context of a traditional 'risk boundary' within the 'ideal' risk environment. Other issues explored include: gender differences in femoral injecting episodes, femoral injecting as a risk boundary and the importance of time pressures as a major predictor of choosing to inject femorally.

A cross-cultural examination of social and sexual behaviour in High Functioning Autism and Down Syndrome

The focus of this research was to obtain an understanding of the social and sexual behaviour of adolescents with High Functioning Autism (HFA) or Down Syndrome (DS) in comparison to Typically Developing (TD) adolescents across cultures. The findings highlight the importance of cross-cultural research and indicate the need for sex education. The portfolio presents four case studies which support the proposition that insecure attachment is only likely to lead to depression in the presence of socially-related and other psychological difficulties, since not all insecurely attached children develop depressive symptoms.

Use of drugs to manage the behaviour of individuals with intellectual disability

Provides a detailed description and analysis over time of the use of medication to manage the behaviour of individuals with intellectual disability. Drug use was extensive and reasons provided were commonly outside those permitted by legislation. The findings enabled critical appraisal of current monitoring procedures and recommendations regarding policy and practice.