TANZANIA GRASS STRUCTURE GRAZED BY GOATS MANAGED WITH DIFFERENT RESIDUAL LEAF AREA INDEX UNDER INTERMITTENT STOCKING
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Data
2014-11-01
Autores
Santos Lemos, Nailson Lima
Ruggieri, Ana Claudia [UNESP]
Costa E Silva, Victor [UNESP]
Campos, Andressa Fernanda [UNESP]
Malheiros, Euclides Braga [UNESP]
Molina de Almeida Teixeira, Izabelle Auxiliadora [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Univ Federal Uberlandia
Resumo
The objective of this study was to evaluate the structure of Tanzania grassland grazed by goats managed with different residue leaf area index (RLAI) under intermittent stocking. The experiment was carried out from February to August, 2008. The treatments consisted of three different targets RLAI (0.8, 1.6 and 2.4) and 95% light interception (LI) criterion determined the rest period. Forage samples were collected at average height sampling points and weighed. Subsequently, a smaller sample was removed to separate the morphological components (leaf, stem and dead material) and to determine the structural and productive features. The canopy architecture was evaluated by the method of inclined point quadrat. The pre-grazing height in the paddocks were significantly different among treatments. RLAI influenced dry matter contents of green forage, leaf, stem and total, with the exception of dry matter of dead material, where the lowest values were observed for 0.8 RLAI. Thus, RLAI modifies canopy structure and is sensitive to canopy height changes throughout the year. Pasture regrowth is not compromised by residual leaf area indexes between 0.8 and 2.4, when climatic factors are not limiting.
Descrição
Palavras-chave
Canopy analyzer, Forage mass, Inclined point quadrat, Light interception, Stubble
Como citar
Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 30, n. 6, p. 1811-1818, 2014.