Ingestive behavior and displacement patterns of beef heifers on Italian ryegrass pasture

Revista Brasileira de Zootecnia

Carine Lisete Glienke²  Marta Gomes Da Rocha¹  Dalton Roso²  Luciana Pötter¹  Vagner Guasso Da Costa²  Juliana Medianeira Machado² 

[1] ,UFSM RS

关键词: feeding stations;    grazing time;    Lolium multiflorum;    supplementation;    estações alimentares;    Lolium multiflorum;    suplementação;    tempo de pastejo;   

DOI  :  10.1590/S1516-35982010000200003

来源: SciELO

【 摘 要 】

The effect of supplementation on ingestive behavior and displacement patterns of beef heifers grazing on Italian ryegrass (Lolium multiflorum Lam.) pasture was evaluated. The grazing method was continuous with variable stocking rate. The experimental design was completely randomized with repeated measures on time. The supplement utilized was a commercial ration (17% CP, 21.4% NDF), daily supplied at 2 pm, in the proportion of 1% of body weight. The evaluations were made through visual observations, in four continuous periods of 24 hours. There was no difference in the bite rate between heifers with and without supplement and bite rate was higher at the end of the period of pasture utilization. Supplemented animals increased bite mass. The number of stations/minute, bites/station and the displacement patterns was influenced by forage changes along the occupation period. The ingestive behavior and displacement patterns of heifers are modified by supplementation and structural variation of the grass along its biological cycle. In the reproductive stage of Italian ryegrass, grazing time, daily number of bites and, feeding stations and time for station are similar between not supplemented and supplemented heifers.

【 授权许可】

CC BY   
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