Your browser doesn't support javascript.

Portal de Pesquisa da BVS Veterinária

Informação e Conhecimento para a Saúde

Home > Pesquisa > ()
Imprimir Exportar

Formato de exportação:



Adicionar mais destinatários

Enviar resultado
| |

Ingestive behavior of Nellore and Bonsmara cattle during the feed efficiency test / Comportamento ingestivo de bovinos Nelore e Bonsmara durante teste de eficiência alimentar

Marchi Maiorano, Amanda; Eugênia Zerlotti Mercadante, Maria; Noely dos Santos Gonçalves Cyrillo, Joslaine; Figueiredo Martins Bonilha, Sarah; Helena Branco, Renata; Geraldo Ribeiro, Enilson.
Artigo em Inglês | VETINDEX | ID: vti-467880


Several studies have reported relationship between eating behavior and performance in feedlot cattle. The evaluation of behavior traits demands high degree of work and trained manpower, therefore, in recent years has been used an automated feed intake measurement system (GrowSafe System ®), that identify and record individual feeding patterns. The aim of this study was to evaluate the relationship between feeding behavior traits and average daily gain in Nellore calves undergoing feed efficiency test. Date from 85 Nelore males was recorded during the feed efficiency test performed in 2012, at Centro APTA Bovinos de Corte, Instituto de Zootecnia, São Paulo State. Were analyzed the behavioral traits: time at feeder (TF), head down duration (HD), representing the time when the animal is actually eating, frequency of visits (FV) and feed rate (FR) calculated as the amount of dry matter (DM) consumed by time at feeder (g.min-1). The ADG was calculated by linear regression of individual weights on days in test. ADG classes were obtained considering the average ADG and standard deviation (SD) being: high ADG (>mean + 1.0 SD), medium ADG (± 1.0 SD from the mean) and low ADG ( mean - 1.0 SD). Data were analyzed using the PROC MIXED procedure (SAS 9.3). The model included animal and residue as random effects and the fixed effects of ADG class (1, 2 and 3) and age at the middle of t
O artigo não apresenta resumo em português.
Biblioteca responsável: BR68.1