Data/hora: 20/06/2024 20:53:55

Biblioteca(s): 	Embrapa Suínos e Aves.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	B - 1	
Data corrente: 	30/03/2015	
Data da última atualização: 	30/03/2015	
Autoria: 	BERNAL, L. E. P.; TAVERNARI, F. de C.; ROSTAGNO, H. S.; ALBINO, L. F. T.	
Afiliação: 	LUIS ERNESTO PAEZ BERNAL, UFV; FERNANDO DE CASTRO TAVERNARI, CNPSA; HORACIO SANTIAGO ROSTAGNO, UFV; LUIZ FERNANDO TEIXEIRA ALBINO, UFV.	
Título: 	Digestible lysine requirements of broilers.	
Ano de publicação: 	2014	
Fonte/Imprenta: 	Brazilian Journal of Poultry Science, v. 16, n.1, p. 49-55, 2014.	
Idioma: 	Inglês	
Conteúdo: 	Modern broilers have been submitted to continuous genetic improvement, and therefore, their nutritional requirements must be constantly updated to ensure their performance. Two experiments were carried out to evaluate different digestible lysine levels for starter (10- 21 days) and grower (22-35 days) phases. The experiments were carried out with male and female Cobb 500 broilers, distributed according to a randomized block experimental design in a 5x2 factorial arrangement (5 increasing digestible lysine levels x 2 sexes), totaling 10 treatments, with 8 replicates of 22 and 20 birds during the starter and grower phase, respectively. Digestible lysine levels of 1.06, 1.12, 1.18, 1.24, and 1.30 were used in the starter diets (10-21 days) and 0.9, 0.98, 1.04, 1.10, and 1.16% in the grower diets (22-35 days). Based on the statistical analyses of the evaluated performance parameters, digestible lysine requirements for maximum performance were determined as 1.22% for males and 1.24% for females in the starter phase, and 1.16% for both sexes in the grower phase. Carcass and performance results indicate that digestible lysine requirements vary with sex and evaluated production parameter. Considering the most relevant broiler production parameters, in 22- to 35-d-old males, digestible lysine requirement for breast meat yield (1.16%) was higher than those for feed conversion ratio (1.07%) and weight gain (1.05%).	
Thesagro: 	Frango de corte; Nutrição.	
Thesaurus Nal: 	Animal nutrition; Broiler chickens.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSA - (19886-1) - UPC - AP - DD -  -  -  - DIS