Effects of variation in nest curtain design on pre-laying behaviour of domestic hens

Laying hens in loose-housing systems select a nest daily in which to lay their eggs among many identical looking nests, they often prefer corner nests. We investigated whether heterogeneity in nest curtain appearance – via colours and symbols – would influence nest selection and result in an even distribution of eggs among nests. We studied pre-laying behaviour in groups of 30 LSL hens across two consecutive trials with eight groups per trial. Half of the groups had access to six identical rollaway group-nests, while the others had access to six nests of the same type differing in outer appearance. Three colours (red, green, yellow) and three black symbols (cross, circle, rectangle) were used to create three different nest curtain designs per pen. Nest position and the side of entrance to the pens were changed at 28 and 30 weeks of age, respectively, whereby the order of changes was counterbalanced across trials. Nest positions were numbered 1–6, with nest position 1 representing the nest closest to the pen entrance. Eggs were counted per nest daily from week of age 18 to 33. Nest visits were recorded individually with an RFID system for the first 5 h of light throughout weeks 24–33. Hens with access to nests differing in curtain appearance entered fewer nests daily than hens with identical nests throughout the study but both groups entered more nests with increasing age. We found no other evidence that curtain appearance affected nest choice and hens were inconsistent in their daily nest selection. A high proportion of eggs were laid in corner nests especially during the first three weeks of lay. The number of visits per egg depended upon nest position and age: it increased with age and was higher after the nest position change than before in nest position 1, whereas it stayed stable over time in nest position 6. At 24 weeks of age, gregarious nest visits (hens visiting an occupied nest when there was at least one unoccupied nest) and solitary nest visits (hens visiting an unoccupied nest when there was at least one occupied nest) accounted for a similar amount of nest visits, however, after the door switch, gregarious nest visits made up more than half of all nest visits, while the number of solitary nest visits had decreased. The visual cues were too subtle or inadequate for hens to develop individual preferences while nest position, entrance side, age and nest occupancy affected the quantity and type of nest visits.

Environmental and behavioral risk factors for moderate or severe rotavirus diarrhea in children less than 24 months

On a global basis rotaviruses are the most important agents involved in childhood diarrhea. In developing countries they account for 6% of all diarrheas and 20% of all diarrhea related deaths of children under 5 years of age, with over 1 billion episodes and over 4 million deaths annually. Given the disease burden, there is a need for better understanding the risk factors involved in rotavirus disease, to identify areas of intervention. In order to provide this information, two areas were developed: a review of the literature, examining the causal evidence for rotavirus diarrhea and a case comparison study. The case comparison study analyzed two areas: identifying climate factors and, identifying environmental and behavioral risk factors. The literature review showed that few analytical studies have identified specific risk factors such as home environment, and a winter seasonal trend for temperate areas, but in key areas evidence is contradictory. The case comparison study for climate factors demonstrated that seasonality occurs in a tropical country like Venezuela and that a complex interplay between weather conditions contribute to the seasonal pattern. A positive association between rain fall (OR 4.1); dew point (OR 2.3) and temperature differential during the day (OR 1.4) and, an inverse association with temperature (OR 0.5) and relative humidity (OR 0.8) was found. This information is useful in understanding the seasonal pattern of rotavirus and for planning health care needs. The second analysis demonstrated that environmental variables such as crowding (OR 14.3), contact with someone with an infectious disease (OR 4.9) and animal ownership (OR 2.3) were important. Restricting the analysis to animal owners demonstrated that living In a rural settling (OR 13.8), defecating in inappropriate places (OR 7.2), crowding(4.2) and indoor animals (4.0) are of importance. Behavioral variables identified were: lack of breast feeding (OR 4.0) and visiting when someone was sick (OR 3.4). Biological and demographic variables of importance were: age, with a dose response relationship; undernurishment (OR 11.3) and household per capita monthly income less than US $ 16.30 (OR 8.5). Using a diarrhea compeer group we found that, although some of the previous variables were of importance, no major differences were found. These findings are important in identifying paths for prevention and further research. ^

Crossing the border for dental care: Factors related to dental health among the south Texas border region

Objectives. The purpose of this thesis is to understand the underlying socioeconomic characteristics affecting dental insurance coverage, yearly dental visits, and factors related to visiting a dentist in Mexico among border region residents. Methods. Using data from the Border Epidemiological Study of Aging, dental utilization in the previous 12 months, dental visits to Mexico, and dental insurance (proxy) were calculated utilizing logistic regression. Three different models were utilized for the dependent variables adjusting for diverse socioeconomic characteristics such as gender, age, marital status, income, education, years of residence in the United States (for immigrants), English proficiency, general health status, employment and dental insurance. Results. After adjustment, diverse variables were significant for the three different models calculated. Conclusion. Although the Mexican health market constitutes a viable option for dental services for border residents, dental insurance and dental yearly visits were lower in this region when compared to national averages. ^

An empirical model to estimate the demand for primary care in urban settings

Objective. To measure the demand for primary care and its associated factors by building and estimating a demand model of primary care in urban settings.^ Data source. Secondary data from 2005 California Health Interview Survey (CHIS 2005), a population-based random-digit dial telephone survey, conducted by the UCLA Center for Health Policy Research in collaboration with the California Department of Health Services, and the Public Health Institute between July 2005 and April 2006.^ Study design. A literature review was done to specify the demand model by identifying relevant predictors and indicators. CHIS 2005 data was utilized for demand estimation.^ Analytical methods. The probit regression was used to estimate the use/non-use equation and the negative binomial regression was applied to the utilization equation with the non-negative integer dependent variable.^ Results. The model included two equations in which the use/non-use equation explained the probability of making a doctor visit in the past twelve months, and the utilization equation estimated the demand for primary conditional on at least one visit. Among independent variables, wage rate and income did not affect the primary care demand whereas age had a negative effect on demand. People with college and graduate educational level were associated with 1.03 (p < 0.05) and 1.58 (p < 0.01) more visits, respectively, compared to those with no formal education. Insurance was significantly and positively related to the demand for primary care (p < 0.01). Need for care variables exhibited positive effects on demand (p < 0.01). Existence of chronic disease was associated with 0.63 more visits, disability status was associated with 1.05 more visits, and people with poor health status had 4.24 more visits than those with excellent health status. ^ Conclusions. The average probability of visiting doctors in the past twelve months was 85% and the average number of visits was 3.45. The study emphasized the importance of need variables in explaining healthcare utilization, as well as the impact of insurance, employment and education on demand. The two-equation model of decision-making, and the probit and negative binomial regression methods, was a useful approach to demand estimation for primary care in urban settings.^

Examining seasonal variations in physical activity among low-income Hispanic walk-trail users living in the Cameron Park Colonia

This study examines variations in physical activity by season, and within seasons by age and gender among park users living in the Cameron Park Colonia, a low-income Hispanic community along the Texas-Mexico border. This is the first study of its kind to evaluate seasonal variations by physical activity among a Hispanic population. We hypothesized that (1) there are no differences in overall physical activity by season; (2) youth engage in more sport-related physical activity compared to adults, (3) males engage in more physical activity than females, and (4) there are differences in physical activity between walk-trail users compared to non walk-trail users in the park.^ Physical activity behavioral data was collected (males n=2,093; females n=1,014) at two time periods (winter 2007; summer 2007) via direct observations and assessed park use, walking trail use, and physical activity (moderate-to-vigorous physical activity (MVPA) by seasons. Frequencies for physical activities were calculated for gender, age groups, and season. Separate Pearson's chi-square analyses were used to address variations in physical activity, age, gender, intensity level of physical activity by season, between walk-trails users and non walk-trail users.^ People visiting the park engaged in more sedentary behavior in winter than summer and a higher percentage engaged in MVPA in the summer than winter (p<.05). More females engaged in light activity compared to males (p<.05). Walk-trail users consisted mostly of females and engaged in more light activity than non walk-trail users (p<.05) who participated in more MVPA.^ Increasing access to parks and walk-trails may be an intervention strategy to increase physical activity among Hispanics. More research is needed to assess promoting trail use and determining long-term effects on physical activity among minority/ethnic groups at greater risk of a sedentary lifestyle and reasons for trail use and non-use. Future studies should focus on the types of activities Hispanics engage in at different parks particularly between men and women. As a result of this study city officials and planners may use this information to build and design parks that cater to the types of activities that Hispanics engage in and may use to meet physical activity guidelines.^

Promoting Family Continuity - Perspectives from Italy

In this essay I review a recent research study from Italy, “Le Radici nel Futuro – La Continuita’ della Relazione Genitoriale oltre la Crisi Familiare,” edited by Paola Dallanegra (2005). The contributors focus on “Spazio Neutro,” a multi-purpose child welfare agency in southern Italy that facilitates parent-child visiting and relationships between children placed in out-of-home care and their families. They delineate and illustrate, through comments from family members, selected principles and strategies for maintaining such continuity throughout the out-of-home placement.

Mujeres y trabajo urbano : el caso de las mucamas de hotel (Mar Del Plata, 1960-1980)

A partir del análisis de un caso particular, como lo es el trabajo de las mucamas de hotel en la ciudad de Mar del Plata (entre las décadas de 1960 y 1980), el presente artículo se propone como una contribución al campo de estudios sobre el trabajo urbano femenino. En Mar del Plata, el impulso del turismo de masas a mediados del siglo XX fue acompañado por un importante desarrollo hotelero. Éste supuso una atractiva y amplia oferta de trabajo para hombres y mujeres que encontraron allí una forma de acceso al mercado laboral, principalmente durante la temporada estival. En este espacio, las mujeres se han concentrado en puestos de trabajo determinados. En el artículo observamos cómo las continuidades entre algunas de las labores desarrolladas en el hotel y el trabajo doméstico no remunerado contribuyeron a su feminización e indagamos en las implicancias que conllevó que un empleo presente importantes continuidades con dicho trabajo. El análisis de testimonios orales nos permitió un acercamiento a las experiencias de las trabajadoras y, junto a las sentencias de los Tribunales de Trabajo, contribuyeron a visibilizar los procesos (sociales, culturales y económicos) que intervienen en la generización del trabajo y en la segregación ocupacional que caracteriza al mercado de trabajo urbano.

Max Aub y Triunfo (más, con la venia, alguna evocación personal)

Cuando Max Aub visita España por primera vez después de más de un cuarto de siglo de exilio, el periodista Emilio Romero publica un texto crítico y descalificador sobre el escritor. Para canalizar su respuesta, Aub se dirige a Triunfo, revista que en la época se distinguía por su posición antifranquista, que le provocó numerosos problemas con la censura. A partir de esta circunstancia, y durante el segundo y último viaje que Aub realiza a España, el director de Triunfo ofrece al escritor la posibilidad de publicar el Discurso apócrifo, escrito con motivo de su imaginario ingreso en la Academia Española. A pesar del escepticismo de Aub sobre el éxito de este proyecto, la revista consigue editar en junio de 1972 un suplemento especial con el texto íntegro del discurso aubiano, documento que se reproduce en este número de Olivar.

¿El museo como forma de "conocer la Historia"? El público interpreta la inmigración

El trabajo analiza cómo la exposición presentada en el Museo Nacional de la Inmigración fue aprehendida e interpretada por su público visitante. Dependiente de la Dirección Nacional de Migraciones, el Museo funcionó entre los años 2001 y 2009 en el edificio del antiguo Hotel de Inmigrantes (en Retiro). Para este estudio utilizamos más de 700 mensajes registrados en el Libro de Visitas del Museo, que fueron clasificados en nueve categorías, de acuerdo a los aspectos comunes que expresaban. A lo largo del análisis, el concepto de memoria se volvió fundamental para comprender los sentimientos y deseos expresados por el público que visitó la institución. Dentro de los temas que aparecieron en los mensajes, pudimos verificar la importancia que le atribuían los visitantes al Estado argentino por la construcción del Hotel, la recepción de los inmigrantes y, actualmente, por la preservación de su memoria y patrimonio; también se evidenció un agradecimiento a los inmigrantes, cuya "fuerza" y "esperanza" contribuyeron al desarrollo del país

El oleoturismo como motor de desarrollo rural : La denominación de origen de montoro-adamuz

El oleoturismo es una modalidad de turismo rural que se desarrolla en los municipios olivareros de la cuenca mediterránea. Las actividades turísticas están organizadas en torno al aceite de oliva y entre ellas se encuentran: visitas a campos de cultivo, a almazaras, catas, así como al estudio de la cultura y la historia del aceite. En esta investigación se analiza la situación de la actividad turística relacionada con este subsector en la Denominación de Origen Montoro-Adamuz, con el fin de conocer el perfil del consumidor de oleoturismo. A partir de aquí, se podrán diseñar herramientas para la promoción y comercialización del oleoturismo en esta región.

Max Aub y Triunfo (más, con la venia, alguna evocación personal)

Cuando Max Aub visita España por primera vez después de más de un cuarto de siglo de exilio, el periodista Emilio Romero publica un texto crítico y descalificador sobre el escritor. Para canalizar su respuesta, Aub se dirige a Triunfo, revista que en la época se distinguía por su posición antifranquista, que le provocó numerosos problemas con la censura. A partir de esta circunstancia, y durante el segundo y último viaje que Aub realiza a España, el director de Triunfo ofrece al escritor la posibilidad de publicar el Discurso apócrifo, escrito con motivo de su imaginario ingreso en la Academia Española. A pesar del escepticismo de Aub sobre el éxito de este proyecto, la revista consigue editar en junio de 1972 un suplemento especial con el texto íntegro del discurso aubiano, documento que se reproduce en este número de Olivar.

¿El museo como forma de "conocer la Historia"? El público interpreta la inmigración

El trabajo analiza cómo la exposición presentada en el Museo Nacional de la Inmigración fue aprehendida e interpretada por su público visitante. Dependiente de la Dirección Nacional de Migraciones, el Museo funcionó entre los años 2001 y 2009 en el edificio del antiguo Hotel de Inmigrantes (en Retiro). Para este estudio utilizamos más de 700 mensajes registrados en el Libro de Visitas del Museo, que fueron clasificados en nueve categorías, de acuerdo a los aspectos comunes que expresaban. A lo largo del análisis, el concepto de memoria se volvió fundamental para comprender los sentimientos y deseos expresados por el público que visitó la institución. Dentro de los temas que aparecieron en los mensajes, pudimos verificar la importancia que le atribuían los visitantes al Estado argentino por la construcción del Hotel, la recepción de los inmigrantes y, actualmente, por la preservación de su memoria y patrimonio; también se evidenció un agradecimiento a los inmigrantes, cuya "fuerza" y "esperanza" contribuyeron al desarrollo del país

El oleoturismo como motor de desarrollo rural : La denominación de origen de montoro-adamuz

El oleoturismo es una modalidad de turismo rural que se desarrolla en los municipios olivareros de la cuenca mediterránea. Las actividades turísticas están organizadas en torno al aceite de oliva y entre ellas se encuentran: visitas a campos de cultivo, a almazaras, catas, así como al estudio de la cultura y la historia del aceite. En esta investigación se analiza la situación de la actividad turística relacionada con este subsector en la Denominación de Origen Montoro-Adamuz, con el fin de conocer el perfil del consumidor de oleoturismo. A partir de aquí, se podrán diseñar herramientas para la promoción y comercialización del oleoturismo en esta región.

El oleoturismo como motor de desarrollo rural : La denominación de origen de montoro-adamuz

El oleoturismo es una modalidad de turismo rural que se desarrolla en los municipios olivareros de la cuenca mediterránea. Las actividades turísticas están organizadas en torno al aceite de oliva y entre ellas se encuentran: visitas a campos de cultivo, a almazaras, catas, así como al estudio de la cultura y la historia del aceite. En esta investigación se analiza la situación de la actividad turística relacionada con este subsector en la Denominación de Origen Montoro-Adamuz, con el fin de conocer el perfil del consumidor de oleoturismo. A partir de aquí, se podrán diseñar herramientas para la promoción y comercialización del oleoturismo en esta región.

Max Aub y Triunfo (más, con la venia, alguna evocación personal)

Cuando Max Aub visita España por primera vez después de más de un cuarto de siglo de exilio, el periodista Emilio Romero publica un texto crítico y descalificador sobre el escritor. Para canalizar su respuesta, Aub se dirige a Triunfo, revista que en la época se distinguía por su posición antifranquista, que le provocó numerosos problemas con la censura. A partir de esta circunstancia, y durante el segundo y último viaje que Aub realiza a España, el director de Triunfo ofrece al escritor la posibilidad de publicar el Discurso apócrifo, escrito con motivo de su imaginario ingreso en la Academia Española. A pesar del escepticismo de Aub sobre el éxito de este proyecto, la revista consigue editar en junio de 1972 un suplemento especial con el texto íntegro del discurso aubiano, documento que se reproduce en este número de Olivar.