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	Provedor de dados Ciência Rural (1) R. Bras. Zootec. (1) Autor Souza,Fernando Augusto de (2) Campos,Daniel Mendes Borges (1) Carneiro,Paulo Roberto Oliveira (1) Fernandez-Alarcon,Miguel Frederico (1) Furlan,Luiz Roberto (1) Furlan,Renato Luis (1) Hada,Fabricio Hirota (1) Macari,Marcos (1) Malheiros,Euclides Braga (1) Nogueira,Wedson Carlos Lima (1) Mais... Palavra-chave Chicken nutrition (1) Dose-response trials (1) Food restriction (1) Gastrointestinal tract growth (1) Infectious bronchitis immunization (1) Intestinal morphometry (1) Linear response plateau (1) Quadratic response plateau (1) Regression models (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2014 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Post-hatch fasting and infectious bronchitis vaccination affect growth, gastrointestinal development, and morphometric parameters of the small intestine of broiler breeders up to three weeks of age R. Bras. Zootec. Fernandez-Alarcon,Miguel Frederico; Souza,Fernando Augusto de; Campos,Daniel Mendes Borges; Hada,Fabricio Hirota; Nogueira,Wedson Carlos Lima; Macari,Marcos; Furlan,Luiz Roberto; Furlan,Renato Luis. ABSTRACT The influence of fasting and vaccination against infectious bronchitis (IB) on growth, gastrointestinal development, and morphometric parameters of the small intestine of newborn broiler breeders was investigated. Weight gain (WG), feed conversion ratio (FCR), gastrointestinal visceral growth, residual yolk sac, and morphometric parameters of the small intestine were measured in chicks aged up to 21 d. We showed that WG was lowest in chicks exposed to longer fasting periods (72 h), although compensatory gains with increasing age were also observed. Unvaccinated chicks performed better at seven days; however, at 21 d of age, a compensatory response led to better FCR in vaccinated birds. Allometric growth of the gastrointestinal tract was affected... Tipo: Info:eu-repo/semantics/article Palavras-chave: Food restriction; Gastrointestinal tract growth; Infectious bronchitis immunization; Intestinal morphometry. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100510 Positioning and number of nutritional levels in dose-response trials to estimate the optimal-level and the adjustment of the models Ciência Rural Souza,Fernando Augusto de; Malheiros,Euclides Braga; Carneiro,Paulo Roberto Oliveira. The aim of this research was to evaluate the influence of the number and position of nutrient levels used in dose-response trials in the estimation of the optimal-level (OL) and the goodness of fit on the models: quadratic polynomial (QP), exponential (EXP), linear response plateau (LRP) and quadratic response plateau (QRP). It was used data from dose-response trials realized in FCAV-Unesp Jaboticabal considering the homogeneity of variances and normal distribution. The fit of the models were evaluated considered the following statistics: adjusted coefficient of determination (R²adj), coefficient of variation (CV) and the sum of the squares of deviations (SSD).It was verified in QP and EXP models that small changes on the placement and distribution of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Regression models; Chicken nutrition; Dose-response trials; Linear response plateau; Quadratic response plateau. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701204 Registros recuperados: 2 Primeira ... 1 ... Última

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