Data/hora: 07/06/2024 11:08:03

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Digestibility, protein retention rate and ammonia excretion in juvenile fat snook (Centropomus parallelus) fed with different protein levels	
Autores: 	Carvalho,Maria Araci Grapiuna de; Fernandes,Luiz Fernando Loureiro; Gomes,Levy de Carvalho.	
Data: 	2017-01-01	
Ano: 	2017	
Palavras-chave: 	Crude digestible protein; Fish culture; Nitrogen excretion; Diet.	
Resumo: 	ABSTRACT: The aim of this study was to determine the level of dietary crude protein (CP) (480, 400, 440, 520 and 560g kg-1) in rations for juvenile II fat snook (Centropomus parallelus) that best promotes protein absorption and lower excretion of nitrogenous products. Three experiments were conducted: the first assessed the protein retention rate; the second evaluated ammonia excretion; and the third determined the best digestibility coefficient. The estimated protein retention rate showed a positive quadratic response to dietary CP with maximum retention at the 510.20g kg-1 protein level, and increasing levels of protein resulted in a greater total ammonia excretion rate in water. The mean apparent protein digestibility coefficient values increased with increasing levels of dietary protein up to 520g kg-1, where they stabilized. As determined by regression, the level of dietary CP that promotes the best digestibility was 495.62g kg-1.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700652	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20160369	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.47 n.7 2017	
Fonte: 	info:eu-repo/semantics/openAccess