Características da ingestão de forragem por cordeiras nos estádios fenológicos da pastagem de azevém
ARQUIVO BRASILEIRO DE MEDICINA VETERINARIA E ZOOTECNIA(2012)
摘要
Utilizing grazing tests and the double weighing technique, the characteristics of the forage intake process of lambs grazing Italian Ryegrass pasture at vegetative, pre-flowering and flowering phenological stages were studied. A completely randomized design with three treatments and five replicates in the vegetative stage and six replicates in the other phenological stages was used. The intake rate, bite mass and bite depth were not influenced by the phenological stages when the intake was not limited by the forage allowance. By increasing bite rate lambs maintained a constant rate of intake. The multiple regression models indicate that among the herbage attributes, the sward height is the most important to determine changes in the grazing behavior of lambs on Italian Ryegrass pasture.
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关键词
forage structure,Lolium multiflorum,bite mass,bite depth,intake rate
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