Data/hora: 03/06/2024 03:40:35

Provedor de dados: 	89	
País: 	Brazil	
Título: 	Available Phosphorus Levels in Diets for Muscovy Ducks in Housing	
Autores: 	Costa,VR; Cruz,FGG; Rufino,JPF; Silva,AF; Freitas,BKM; Feijó,JC; Guimarães,CC.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Bone; Cairinamoschata domesticus; Carcass; Mineral; Waterfowl.	
Resumo: 	ABSTRACT The present study aimed to determine ideal levels of available phosphorus for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized with treatments consisting of six nutritional plans that included the initial, growth and termination phases and differed in relation to available phosphorus levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were not observed (p&gt;0.05) in performance. Higher available phosphorus levels presented a positive influence (p&lt;0.05) on carcass. Results presented differences (p&lt;0.05) among sexes for carcass development and commercial cuts, with better feed efficiency of males than females in same period. For mineral composition, differences (p&lt;0.05) were observed to calcium (%), phosphorus (%) and Ca:Pratio. The present study indicates that nutritional plan 2 (initial = 0.60%; growth = 0.55% and termination = 0.50%) presented ideal nutritional requirement of available phosphorus for muscovy ducks in housing, with better carcass development and mineral deposition on bones.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200338	
Editor: 	Fundação APINCO de Ciência e Tecnologia Avícolas	
Relação: 	10.1590/1806-9061-2018-0914	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Poultry Science  v.21 n.2 2019	
Fonte: 	info:eu-repo/semantics/openAccess