Valor nutritivo da forragem e produção animal em pastagens de Brachiaria brizantha

By V. P. B. Euclides, M. Macedo, C. B. D. Valle, Gelson dos Santos Difante, Rodrigo Amorim Barbosa, Everton Ronaldo Cacere. 2009

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The objectives of this work were to evaluate animal production and its relationship with pasture characteristics of Brachiaria brizantha cultivars Marandu, Xaraes and Piata. The experiment had a randomized complete block design, with three treatments and two replicates. Two-ha paddocks were divided into two and submitted to alternated grazing, with 28 days of grazing and 28 days of rest. Three tester steers were kept in each paddock; additional steers were placed in each paddock by the put and take technique, to assure post grazing residues of about 3 Mg ha-1 of dry matter. The pastures were sampled monthly to estimate the nutritive value of the forage. The animals were weighted, and the stocking rate was adjusted twice a week. Despite the lower average daily gain (ADG), in the cv. Xaraes pasture, the stocking rate was greater, which resulted in greater productivity, in comparison with cvs. Marandu and Piata. The pasture with cv. Piata had the highest ADG. These results indicate that cvs. Xaraes and Piata are new alternatives for Cerrado pastures. The choice of the forage cultivar should fit the animal and production system targets.

Subfields: Agronomy and Crop Science, Forestry, Soil Science

View Paper: https://www.semanticscholar.org/paper/b8d49509a22355677cf5e15c42b691393ee5258c

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