| Registro completo |
| Provedor de dados: |
R. Bras. Zootec.
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| País: |
Brazil
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| Título: |
Grazing ecology of female lambs on Italian ryegrass plus red clover pasture under different defoliation intensities
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| Autores: |
Glienke,Carine Lisete
Rocha,Marta Gomes da
Camargo,Daniele Gindri
Pötter,Luciana
Confortin,Anna Carolina Cerato
Costa,Vagner Guasso da
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| Data: |
2010-01-01
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| Ano: |
2010
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| Palavras-chave: |
Bite rate
Feeding stations
Ingestive behavior
Lolium multiflorum
Pasture structure
Trifolium pratense
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100007
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| Editor: |
Sociedade Brasileira de Zootecnia
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| Relação: |
10.1590/S1516-35982010000100007
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Zootecnia v.39 n.1 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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