Data/hora: 16/06/2024 00:25:16

Provedor de dados: 	89	
País: 	Brazil	
Título: 	Digestible Threonine to Lysine Ratios for Meat-Type Quails	
Autores: 	Castro,MR; Pinheiro,SRF; Oliveira,RG; Abreu,LRA; Mota,LFM; Miranda,JA.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Amino acids; Coturnix coturnix ideal protein; Performance.	
Resumo: 	ABSTRACT Three experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p&lt;0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible Thr:Lys ratios had a linear effect (p&lt;0.01) on threonine intake and livability, and linear and quadratic effects (p&lt;0.01) on feed intake. During the grower I phase, increasing digestible Thr:Lys ratios promoted linear increase in threonine intake and feed conversion ratio (p&lt;0.05), and a linear decrease in weight gain. The estimated digestible Thr:Lys ratios recommended for meat-type quails are 0.85, 0.73 and 0.66%, for the pre-starter, starter and grower I phases, respectively.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100302	
Editor: 	Fundação APINCO de Ciência e Tecnologia Avícolas	
Relação: 	10.1590/1806-9061-2017-0636	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Poultry Science  v.22 n.1 2020	
Fonte: 	info:eu-repo/semantics/openAccess