Ingestive behavior and performance of female lambs under grazing / Comportamento ingestivo e desempenho de cordeiras em pastejo
Carlos Vieira Júnior, Luiz; da Silva Cabral, Luciano; Gabriela Berchiol da Silva, Marina; Conte Hadlich, Janaina.
B. Indústr. Anim.;
69: 15-15, 2012.
Artigo
em Português
| VETINDEX
| ID: vti-467084
Resumo
The ingestive behavior and performance of female lambs grazing on Marandu pasture submitted to different stocking rates during the rainy and transition season were evaluated. The experimental area with 4.500 m2 was divided into 45 paddocks of 100 m2 each. Twenty-seven Santa Ines female lambs (purebred) 4 months old and 22 kg of initial body weight were distributed in a completely randomized design, with nine replicates. Lambs were divided into 9 groups with the same initial weight and submitted to three stocking rates: 2, 3 and 4 lambs/paddock, which corresponded to 40, 60 and 80 lambs/ha, respectively. Each group of animals had a module of five paddocks, managed on intermittent grazing system, with 7 days of occupation and 28 d of rest. The feeding behavior of animals was assessed one day before the end of each experimental period, from 8:00 AM to 5:00 PM, observing the activities of grazing, rumination, rest and water or mineral intake at every 15 minutes. Only activity happening in the moment of observation was considered. The liveweight gain of animals was calculated by the difference between weighing dates. The average daily gain was obtained dividing the WG by the total of the experimental period days. Weight gain per area was calculated by multiplying the number of animals per hectare in each stoking rate and their respective weight gain. Increase on time of grazing andO artigo não apresenta resumo em português.
Biblioteca responsável:
BR68.1
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