Data/hora: 05/06/2024 01:27:44

Provedor de dados: | 96
País: | Brazil
Título: | Grazing ecology of female lambs on Italian ryegrass plus red clover pasture under different defoliation intensities
Autores: | Glienke,Carine Lisete; Rocha,Marta Gomes da; Camargo,Daniele Gindri; Pötter,Luciana; Confortin,Anna Carolina Cerato; Costa,Vagner Guasso da.
Data: | 2010-01-01
Ano: | 2010
Palavras-chave: | Bite rate; Feeding stations; Ingestive behavior; Lolium multiflorum; Pasture structure; Trifolium pratense.
Resumo: | The relationship between pasture dynamics and ingestive behavior of female lambs was studied on Italian ryegrass (Lolium multiflorum Lam.) plus red clover (Trifolium pratense L.) mixture under a range of defoliation intensities. Rotational grazing was used and the grazing interval was determined by the thermal sum of 313 degree days. The initial pre-grazing canopy height disappearance values were 65 (very high), 58 (high), 47 (medium) and 37% (low). The sward vertical structure was similar among defoliation intensities. The forage allowance decreased linearly as defoliation intensities increased, with 0.35 bite/minute reduction for each 1% increase in forage allowance. The bite rate and number of bites/feeding station decreased with reduced contribution of leaves in the sward structure. It was associated, respectively, with an increase and a decrease of NDF and CP levels in forage as grazed by female lambs. The pasture cycle proves to be more important than defoliation intensities as a source for changes in feeding stations and displacement patterns of female lambs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100007
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982010000100007
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.39 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess