Weight evaluation of Nellore yearlings from different lineage using two different types of diet in the water season
DOI:
https://doi.org/10.22256/pubvet.v5n29.1190Keywords:
beef cattle; performance, supplementationAbstract
Low levels in weight gain during the water season obstruct that the production in tropical pastures will be able to attentive the markets that demand precocity animals and with good carcass development.It was realized one experiment in the Nova Crixas city, Goias state, using 60 Nellore yearlings with ages ranging from 12 to 14 months. The animals were selected randomly, with maximum range of three months of age. The animals were divided in two treatments, being: PSM = pasture + mineral supplementation (control treatment) and PSPE = pasture + protein-energetic supplementation. The supplement was available ad libidum, with average intake estimated in 0.1% of the live weight /head/day. The animals were kept in pasture of Brachiaria brizantha cv. Marandu during 118 days. The statically analysis were carried out by SAS program and the traits average compared by the t test (p<0.05). The animals that were submitted in protein-energetic supplementation maintained the highest weights considering the control treatment, showing average superiority of 32,9 kg in the last weighing. Could be observed that occur inversion in the ranking of lineage between the treatments, showing the genotype-environmental interaction in the process production. The protein-energeticsupplementation in the water season, displayed heavier animals with average of 374.8 kgcan be used in the alimentation of Nellore yearling kept in pasture, aiming extra weight gain, and the genotype-environmental interaction should be considered.
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Copyright (c) 2011 Rodrigo Zaiden Taveira, Evando Alves Filgueiras, Rodrigo Medeiros da Silva, Osvaldo José da Silveira Neto3, Ângelo Leonardo de Castro Basile, Lindolfo Dorcino dos Santos Neto, Jean Sardinha de Almeida, Barbara Juliana Martins Lemos
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