Estimativas de parâmetros genéticos de características de crescimento em um rebanho Caracu selecionado para peso ao sobreano

Foram analisados registros de 1.698 animais de um rebanho Caracu selecionado para peso pós-desmame entre os anos 1979 e 2002 com o objetivo de verificar a existência de variabilidade genética aditiva nas características de crescimento e suas interpretações. As características analisadas foram: peso ao nascer (PN), peso padronizado aos 120 dias (P120), peso ao desmame padronizado aos 210 dias (P210), peso de machos ao final da prova de ganho de peso (P378) e ganhos diários do nascimento ao desmame (GND), dos machos na prova de ganho de peso (G112), do desmame ao sobreano em machos (GDSm), peso de fêmeas padronizado aos 550 dias (P550) e ganhos das fêmeas em pastagem do desmame ao sobreano (GDSf), além da altura da garupa a um ano em machos (ALTm) e ao sobreano em fêmeas (ALTf). Os componentes de (co) variâncias, as herdabilidades e as correlações genéticas foram estimados por máxima verossimilhança restrita não-derivativa utilizando-se o software MTDFREML. As estimativas de herdabilidade e os erros-padrão foram iguais a 0,34±0,06; 0,11±0,05; 0,13±0,05; 0,11±0,05; 0,35±0,09; 0,42±0,09; 0,31±0,09; 0,13±0,06; 0,21±0,08; 0,55±0,11; 0,51±0,09 para PN, P120, P210, GND, P378, P550, GDSm, GDSf, G112, ALTm e ALTf, respectivamente. As correlações genéticas entre as características foram de moderadas a altas e positivas, com exceção de algumas correlações com a característica GDSf e o PN. A seleção com base no desempenho do próprio indivíduo, como tem sido realizada, proporciona progresso genético nas características de seleção direta, assim como em algumas características com alta correlação genética.

Fatores que afetam a satisfação de pacientes em serviços de saúde :um estudo em setor ambulatorial de hospital

This thesis shows concepts and models related to customer satisfaction measurement, focusing in detail on patients satisfaction evaluations in a policlinic sector of a hospital located in Natal RN. To reach this aim, two hundred and fifty one patients of this hospital were interviewed. The methodology approach includes a theoretical basis through a review and study of previous research on the topic, governmental initiatives and management systems which deal with excellence and need more reports concerning customers perceptions about satisfaction. Furthermore, it was included some models of nationals index about customer satisfaction. The Norwegian model was used in this thesis. The use of this approache, together with a multiple regression analysis, led to results that shows the factors which affect patients satisfaction in a policlinic sector. They are four as following: The evaluation of physician attendance; its results; simplicity of accessibility when health services are needed; and both support and tranquility given by the hospital. The study results can support researches of a conceptual model to determinate the aspects which affect the patient s satisfaction and could be a contribution to a development of a national costumer satisfaction index

Medição de satisfação e fidelidade do cliente :um estudo com pacientes de clínica particular

This Thesis deals with a study on customer satisfaction and loyalty measurement focusing on a model of factors antecedents of customer satisfaction and loyalty. The model is based on a Satisfaction Index model adopted in Norway developed by Johnson et al.(2001) and the service quality drivers from the literature. It is surveyed a sample of 130 patients of a gynecology clinical. It is used a multiple regression analysis as the main statistical method in order to verify the factors affecting satisfaction and loyalty. The main findings are that the quality model explain 54% of the satisfaction but the whole model explain only 31% of the loyalty. Although the results are consistent with the literature in term of quality as the main driver of the satisfaction and that the satisfaction is not only one factor to explain loyalty, both the quality model to satisfaction and the factors model affecting loyalty should be improved to explain better the satisfaction and loyalty in health care service

Genetic parameters for milk, fat and protein yields in Murrah buffaloes (Bubalus bubalis Artiodactyla, Bovidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estimates of genetic parameters for scrotal circumference using random regression models in Nelore cattle

A total of 15,901 scrotal circumference (SC) records from 5300 Nelore bulls, ranging from 229 to 560 days of age, were used with the objective of estimating (co)variance functions for SC, using random regression models. Models included the fixed effects of contemporary group and age of dam at calving as covariable (linear and quadratic effects). To model the population mean trend, a third order Legendre polynomial on animal age was utilized. The direct additive genetic and animal permanent environmental random effects were modeled by Legendre polynomials on animal age, with orders of fit ranging from 1 to 5. Residual variances were modeled considering 1 (homogeneity of variance) or 4 age classes. Results obtained with the random regression models were compared to multi-trait analysis. (Co)variance estimates using multi-trait and random regression models were similar. The model considering a third- and fifth-order Legendre polynomials for additive genetic and animal permanent environmental effects, respectively, was the most adequate to model changes in variance of SC with age. Heritability estimates for SC ranged from 0.24 (229 days of age) to 0.47 (300 days of age), remained almost constant until 500 days of age (0.52), decreasing thereafter (0.44). In general, the genetic correlations between measures of scrotal circumference obtained from 229 to 560 days of age decreased with increasing distance between ages. For genetic evaluation scrotal circumference could be measured between 400 and 500 days of age. (C) 2010 Elsevier B.V. All rights reserved.

Genetic associations between stayability and reproductive and growth traits in Canchim beef cattle

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Annual profile of fecal androgen and glucocorticoid levels in free-living male American kestrels from southern mid-latitude areas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relação entre características morfológicas e produção de leite em vacas da raça Gir

O objetivo deste trabalho foi determinar parâmetros genéticos relacionados a características morfológicas e suas correlações genéticas com a produção de leite, em vacas da raça Gir. Utilizaram-se 3.805 registros provenientes de 2.142 vacas. O modelo utilizado na análise de características morfológicas continha os efeitos fixos de rebanho, ano e estação de classificação, estádio da lactação e idade da vaca à classificação, além da identificação do classificador. Quanto à produção de leite, foram incluídos no modelo os efeitos fixos de rebanho, ano e estação de parição e idade da vaca ao parto. Os parâmetros genéticos foram obtidos por meio do aplicativo REMLF90. As estimativas de herdabilidade variaram de 0,09 a 0,54. A variabilidade genética aditiva da maioria das características é suficiente para que ganhos genéticos anuais significativos possam ser alcançados com o processo de seleção. As correlações genéticas entre as características morfológicas variaram de baixas a altas e, entre elas e a produção de leite, de baixas a moderadas. Altas correlações genéticas entre algumas características morfológicas implicam a possibilidade de exclusão de algumas delas do programa de melhoramento genético da raça Gir, no Brasil. As correlações genéticas entre produção de leite e algumas características morfológicas indicam que estas podem ser utilizadas na formação de índices de seleção.

Interação genótipo x ambiente e características pré-desmama em animais da raça Simental em duas estações de nascimento

O objetivo deste trabalho foi avaliar o efeito da interação genótipo x ambiente (GxA), nas características peso à desmama e ganho de peso do nascimento à desmama, em machos e fêmeas da raça Simental, nascidos nas estações chuvosa e seca. Foram avaliados 20 mil animais, aos 210 dias de idade. Realizou-se uma análise multicaracterística, que considerou como distinta a mesma característica nos diferentes grupos ambientais, e uma análise unicaracterística, que considerou cada característica como a mesma em todos os grupos ambientais. Ainteração GxA foi avaliada por meio da correlação genética (r g). As interações foram consideradas importantes quando os valores de r g ficaram abaixo de 0,80. As distribuições posteriores das estimativas de herdabilidades mostraram ausência de heterogeneidade de variâncias entre os sexos, entretanto houve interação GxA entre os grupos ambientais. Observaram-se valores de correlação genética de 0,54 a 0,78 e 0,55 a 0,75 para peso à desmama e ganho de peso do nascimento à desmama, respectivamente. As seleções, baseadas tanto na análise unicaracterística quanto na multicaracterística, não mostraram diferenças significativas quanto ao ganho genético dos animais. Há efeito das estações de nascimento nas características avaliadas, em todos os grupos ambientais, e a interação GxA é mais evidente em fêmeas do que em machos.

Gestão da satisfação e fidelidade do cliente: um estudo em uma instituição de ensino superior

This Master of Science Thesis deals with the customer satisfaction and loyalty focusing on a private higher education institution in Belém city, Brazil. The literature review focuses on costumer satisfaction and loyalty concepts and theory, models of quality managing systems and methodologies of costumer satisfaction measurement. The research was a survey with a random stratified sample of 329 undergraduate students of Business Administration at the Faculdade do Pará , in the morning and the night periods. The data analysis was made through the descriptive statistics and multiple regression analysis. The main findings are that the model was satisfactory and the main factors affecting Satisfaction to the School were Best Professor Didatics (beta=0.297), Courses Contents (beta=0.280), Clerks Sympathy (beta=0.201), and Number of Students in Classroom (beta=0,187) with a adjusted R2 = 0,47. The main factors affecting School Loyalty with an adjusted R2 = 0,43 were School Image (beta=0.383), Affective Commitment (beta=0.255), and Satisfaction with Professors (beta=0,218). The findings suggest also that may be differences between the set of students and those that complain for something

Fatores que afetam a satisfação e a fidelidade do cliente: um estudo com compradores de automóveis

This thesis presents a contribution to the study customer satisfaction models, analyzing the relationship between antecedent variables satisfaction and customer loyalty, through a survey with car s buyers in Natal. The theorical survey is focused in concepts of customer satisfaction and loyalty, and in the customer satisfaction index models. For the field survey, was applied a questionnaire, based on the Norwegian Customer Satisfaction Barometer (NCSB), considered by Johnson et al. (2001), with 106 customer of concessionary Fiat, the Pontanegra Automóveis. The main results obtained by the multiple regression analysis reveal that, considering the Fiat, the satisfaction is influencing by reliance degree in the firm seriousness and by complaining handling, the loyalty is influenced by possibility of again pay the same value if was again buy a car, the satisfaction degree with a car, affective commitment relationship firm customer of the own car and the complaining handling. Considering the concessionaire, the satisfaction is influenced by reliance degree in the firm seriousness, ability degree of the concessionaire in delivery service and by complaining handling, already the loyalty is influencing by possibility of again pay the same value if was again buy a car, affective commitment relations to be concessionaire s customer, by calculate commitment in relation the economic loss of bought this car of this firm and complaining handling

Gestão de satisfação e fidelidade do cliente: um estudo com turistas em hotéis

This Thesis deals with a study on customer satisfaction and loyalty focusing on a model of factors antecedents of customer satisfaction and loyalty. The model is based on a Satisfaction Index model adopted in Norway developed by Johnson et al.(2001) and the service quality drivers from the literature. It is surveyed a sample of tourist in Natal. It is used a survey questionnaire applied at the airport in the departure moment of the tourist. The final sample results on 198 cases. Is is used a multiple regression analysis as the method to verify the factor affecting satisfaction and loyalty. Two models arise from the analysis. The first model concerning satisfaction results with cleaness and hygiene of the bathroom, leisure facilities, employees promptness, and price as the significant factors affecting satisfaction. The model has a R2 of 0.6430 and the also check in service, cleaness of the apartment and the hotel in general, bedroom setting have colinearity with some factors entering the model. The loyalty model results with satisfaction, affective commitment as the main factors affecting loyalty, with a R2 0.5396, and also image has collinearity with satisfaction. A small part of the sample has complained and this factor was not considered in the models. The results are consistent with the literature in term of quality as the main driver of the satisfaction and that it is not the only one factor to explain loyalty

Gestão ambiental e competitividade: um estudo sobre os fatores que afetam a decisão de compra de produtos orgânicos na cidade de Teresina-PI

The organic products represent one of the main trends of alimentary consumption in the new century. In Brazil, the answer is already well representative which it becomes the country, as a great consuming and exporting market of products of LVF type. The objective of this research was to investigate the factors capable to influence the food consumer in its purchase decision of organic products in the supermarkets of Teresina, capital of Piauí State. The methodology was exploratory and descriptive, using survey, with closed and opened questions in 542 interviewed. The questionnaire was based on projected scales to evaluate the factors that can influence the purchase decision of organic products, whose variable had been grouped in the following groups: behavior, knowledge, interest, competitiveness, importance, barrier and profile. The used statistical techniques were descriptive analysis and multiple regression analysis. The results demonstrate interest of the population in paying more for the organic product, due to better quality of life, however it lacks to one better spreading and greater sensitization to attract these consumers. Some recommendations and proposals are presented after the results, as suggestions for future research

Gestão de satisfação e fidelidade do cliente: um estudo dos fatores que afetam a satisfação e fidelidade dos compradores de automóveis

This Master s thesis presents a discussion on customer satisfaction models investigating the relations of antecedent variables service quality, price index, complaint handling, image, affective and calculative commitment, with satisfaction and loyalty. The scope of the research is the influence of service dimensions in the car buyer s satisfaction and loyalty. A sample of 91 customers was surveyed among new cars buyers of one brand in Natal city, Brazil, and the data was analyzed using multiple regression analysis. The literature review covers subjects such as customer satisfaction, management system, customer satisfaction measurement index models. The main findings suggest that satisfaction with the car brand is mainly influenced by customization of the service, time for accomplishing servicing, and the way the dealer handle complains. Regarding the dealer itself the main variable related to satisfaction is also time for accomplishing servicing. Considering customer loyalty, the customer satisfaction with the dealer explain strongly the loyalty with the brand/manufacturer. Also, the satisfaction, affective commitment and complains handling were found related to loyalty, as the stronger variables explaining the loyalty variance. One main conclusion is that service provided by dealers is one key factor influencing the customer satisfaction and loyalty in auto industry

Genetic parameters and relationships between growth traits and scrotal circumference measured at different ages in Nellore cattle

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)