Data/hora: 12/06/2024 17:14:48

Provedor de dados: 	96	
País: 	Brazil	
Título: 	Feed intake and prediction assessments using the NRC, CNCPS and BR-CORTE systems in Nellore and Red Norte steers finished in feedlot	
Autores: 	Machado Neto,Otávio Rodrigues; Ladeira,Márcio Machado; Gonçalves,Tarcisio de Moraes; Lopes,Leandro Sâmia; Oliveira,Dalton Mendes de; Bassi,Marcelo Silva.	
Data: 	2010-02-01	
Ano: 	2010	
Palavras-chave: 	Crossbreeding; Markers; Nutritional requirements; Zebu breeds.	
Resumo: 	The objective of this research was to evaluate the dry matter intake (DMI) and nutrient consumption in Nellore and Red Norte steer finished in a feedlot and compare the actual and predicted values by NRC (2000), CNCPS 5.0 and BR-CORTE systems. Forty-one animals, 19 Nellore and 22 Red Norte steers, with initial live weight of 361 ± 31 kg and 367 ± 30 kg, respectively, were used. The experiment lasted 84 days, with 28 days for adaptation and 56 experimental days. The animals were weighed at the beginning and at end of each 28-day period after 16 hours fasting. The dry matter intake was estimated by LIPE, chrome oxide and indigestible dry matter (DMi) markers. There were no differences between Nellore and Red Norte DMI when expressed in kg/day (10.66 vs. 10.44). When intake was expressed in percentage of live weight (% LW), Nellore steer presented higher intake than Red Norte steer (2.55 vs. 2.39%). All the systems evaluated presented a lower predicted intake than the observed intake. However, these differences were smaller for crossbreed animals.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000200024	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/S1516-35982010000200024	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.39 n.2 2010	
Fonte: 	info:eu-repo/semantics/openAccess