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Provedor de dados:  R. Bras. Zootec.
País:  Brazil
Título:  Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage
Autores:  Zanini,Guilherme Doneda
Santos,Gabriela Trevisan
Sbrissia,André Fischer
Data:  2012-04-01
Ano:  2012
Palavras-chave:  Grazing management
Light interception
Panicum maximum
Post-grazing height
Resumo:  The objective of this study was to assess the accumulation and morphological composition of forage in Aruana Guineagrass (Panicum maximum cv. Aruana) swards subjected to intermittent stocking with sheep. Experimental treatments when grazing was introduced included low (95%) and high (98%) incident light interception and low (10 cm)- and high (15 cm)-residue height and were allocated to experimental units (196 m² fenced areas) in a completely randomized 2 × 2 factorial arrangement with three replicates. Treatments were imposed between January and May 2009. More frequent grazing cycles (95% light interception) resulted in better control of stem elongation, lower proportion of dead plant material and invasive plants, and higher proportions of leaf blades in the grazing strata, compared with less frequent grazing cycles (98% light interception). Grass managed with 95% light interception combined with 10 and 15 cm post-grazing height and grass managed at 98% light interception combined with 15 cm post-grazing height did not show differences in forage accumulation rate. These results indicate that more frequent (30 cm pre-grazing height) and less severe (15 cm post-grazing height) grazing cycles provided animals with high leaf blade mass and low stem mass forage.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Zootecnia
Relação:  10.1590/S1516-35982012000400011
Formato:  text/html
Fonte:  Revista Brasileira de Zootecnia v.41 n.4 2012
Direitos:  info:eu-repo/semantics/openAccess

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