Autor(es):
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]
Data: 2015
Identificador Persistente: http://hdl.handle.net/11449/117795
Origem: Oasisbr
Assunto(s): Canopy analyzer; Forage mass; Inclined point quadrat; Light interception; Stubble; Canopy analyzer; Canopy analyzer; Forage mass; Forage mass; Inclined point quadrat; Inclined point quadrat; Light interception; Light interception; Stubble; Stubble
Descrição
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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.
Univ Fed Ceara, Fortaleza, Ceara, Brazil
UNESP, Univ Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, Brazil
UNESP, Jaboticabal, SP, Brazil
UNESP, Univ Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, Brazil
UNESP, Jaboticabal, SP, Brazil
