Title:	Grazing management strategies for massaigrass-forage peanut pastures. 2. Productivity, utilization and sward structure.
Authors:	ANDRADE, C. M. S. de GARCIA, R. VALENTIM, J. F. PEREIRA, O. G.
Affiliation:	CARLOS MAURICIO SOARES DE ANDRADE, CPAF-AC; Rasmo Garcia, UFV; JUDSON FERREIRA VALENTIM, CPAF-AC; Odilon Gomes Pereira, UFV.
Date Issued:	2006
Citation:	Revista Brasileira de Zootecnia, Viçosa, MG, v. 35, n. 2, p. 334-342, 2006.
Description:	This study was carried out to evaluate the productivity, utilization and sward structure of a mixed massaigrass (Panicum maximum x P. infestum, cv. Massai) and forage peanut (Arachis pintoi Ac 01) pasture, intermittently stocked at three daily herbage allowance levels (9.0, 14.5 and 18.4% of live weight). In each grazing cycle, dry matter (DM) accumulation rates, defoliation intensity (%), grazing depth (%) and grazed horizon (cm) were evaluated. The structure of massaigrass tussocks was characterized in both dry and rainy seasons by measuring its pre-grazing morphological composition and postgrazing height and density (tussocks/m). Pastures submitted to higher herbage allowance (HA) levels showed higher productivity, but were less efficiently utilized. On average, over the experimental period, DM accumulation rates increased linearly from 56.8 to 81.3 kg/ha/day as HA levels increased from 9.0 to 18.4% of live weight. However, defoliation intensity and grazing depth declined linearly with increasing HA levels. During the dry season, pre-grazing morphological composition of massaigrass was characterized by 41% of green leaf blades, 10% of pseudostems and 49% of dead material, irrespective of HA levels. In the rainy season, however, it showed higher percentage of green leaf blades and lower percentage of pseudostems when submitted to lower HA levels, although there were not differences in relation to percentage of dead material. The structure of massaigrass tussocks tended to deteriorate at high HA levels.
Thesagro:	Pastagem consorciada Leguminosa forrageira Híbrido Morfologia vegetal Matéria seca Desfolha Pastejo Características Agronômicas
NAL Thesaurus:	Mixed grazing Forage legumes Hybrids Agronomic traits Plant morphology Dry matter accumulation Defoliation Arachis pintoi
Keywords:	Capim massai Panicum maximum x P infestum cv Massai Mixed massaigrass Amendoim forrageiro Forage peanut Profundidade do pastejo Grazing depht Profundidad de pastoreo Acumulación de materia seca Híbridos Pastoreo mixto Defoliación Leguminosas forrajeras Morfología de las plantas
ISSN:	1806-9290 (online)
DOI:	10.1590/S1516-35982006000200003.
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AC)