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Protein levels for heat-exposed broilers: Performance, nutrients digestibility, and energy and protein metabolism
(2007-06-11)
Heat stress causes significant economic losses on broilers production due to poorer performance and carcass quality. Considering that protein has the highest heat increment among nutrients, it has been suggested that protein ...
Proteína Bruta e Proteína Ideal para Frangos de Corte no Período de 1 a 21 Dias de Idade
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2001-05-01)
Dois experimentos foram realizados com o objetivo de avaliar o desempenho de frangos de corte no período de 1 a 21 dias alimentados com dietas formuladas nos conceitos de proteína bruta e proteína ideal. No primeiro ...
Use of ideal protein concept for precision formulation of amino acid levels in fish-meal-free diets for juvenile Nile tilapia (Oreochromis niloticus L.)
(Blackwell Publishing, 2004-10-08)
This study was undertaken in a closed system with Nile tilapia (Oreochromis niloticus) to examine the effects of total replacement of fish meal (FM) by soybean meal. Nile tilapia fingerlings with an average weight of ...
Maintenance requirements for methionine and cysteine, and threonine for poultry
(South African Journal of Animal Sciences, 2011-01-01)
This study aimed to estimate the methionine & cystine (M&C), and threonine (THR) requirements for maintenance of adult roosters differing in liveweight and body composition, and to estimate the concentrations of M&C and ...
Redução da proteína da dieta com base no conceito de proteína ideal para tilápias-do-nilo (Oreochromis niloticus) criadas em tanques-rede
(Sociedade Brasileira de Zootecnia, 2007-06-01)
Avaliou-se o desempenho de tilápias-do-nilo (Oreochromis niloticus) criadas em tanques-rede e alimentadas com dietas contendo 27,0 (controle); 25,2; 24,3 e 22,7% de proteína digestível. Aminoácidos cristalinos (L-lisina, ...
Digestible tryptophan levels in diets for pigs weighing 15 to 30 kg
(Revista Brasileira de Zootecnia, 2017)
Ingredient classification according to the digestible amino acid profile: an exploratory analysis
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2005-09-01)
This study aimed: 1) to classify ingredients according to the digestible amino acid (AA) profile; 2) to determine ingredients with AA profile closer to the ideal for broiler chickens; and 3) to compare digestible AA profiles ...
Dietary digestible lysine requirement and essential amino acid to lysine ratio for pacu Piaractus mesopotamicus
(Wiley-Blackwell, 2010-08-01)
To determine the digestible lysine requirement for pacu juveniles, a dose-response feeding trial was carried out. The fish (8.66 +/- 1.13 g) were fed six diets containing the digestible lysine levels: 6.8, 9.1, 11.4, 13.2, ...
Utilização de subprodutos de origem animal em dietas formuladas com base em proteína bruta e proteína ideal para frangos de corte de 22 a 42 dias de idade
(Sociedade Brasileira de Zootecnia, 2005-04-01)
Foi conduzido um experimento para avaliar a utilização de subprodutos de origem animal em dietas para frangos de corte de 22 a 42 dias de idade, formuladas com base nos conceitos de proteína bruta e proteína ideal. O ...
Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2005-12-01)
This trial was conducted to evaluate the utilization of low-protein diets formulated based on the ideal protein concept for broiler chickens from 7 to 21 days of age reared at different environmental temperatures. Nine ...