Data/hora: 05/06/2024 07:59:07

Provedor de dados: 	89	
País: 	Brazil	
Título: 	Effect of energy levels of diets formulated on total or digestible amino acid basis on broiler performance	
Autores: 	Maiorka,A; Dahlke,F; Santin,E; Kessler,AM; Penz Jr.,AM.	
Data: 	2004-06-01	
Ano: 	2004	
Palavras-chave: 	Amino acid; Broilers; Energy.	
Resumo: 	This study was conducted to evaluate the performance and carcass and breast yields of broilers fed two different energy levels (3,200 or 2,900 kcal ME/kg) and two ways of expressing amino acid requirements (total - TAA or digestible - DAA) between 21 and 42 days of age. The results showed that broilers fed the diet containing 3,200 kcal ME/kg had higher weight gain (P=0.015), better feed conversion (P=0.001), and higher abdominal fat deposition (P=0.001) as compared to those fed the diet containing 2,900 kcal ME/kg. Diets formulated on DAA basis promoted higher weight gain (P=0.043), better feed conversion (P=0.010) and better conversion of ME intake into weight gain (P=0.007) as compared to those formulated on TAA basis. The results of this study suggest that formulation based on DAA is necessary if the diets contain protein sources that are not reliable in terms of amino acid digestibility. The response to formulation based on DAA was minimized when birds received the low energy level diet (2,900 kcal ME/kg).	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200003	
Editor: 	Fundação APINCO de Ciência e Tecnologia Avícolas	
Relação: 	10.1590/S1516-635X2004000200003	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Poultry Science  v.6 n.2 2004	
Fonte: 	info:eu-repo/semantics/openAccess