Abstract
The objective of this study was to evaluate the productive performance of Nellore females in the rebuilds, receiving protein mineral supplementation, and energetic protein in the pasture of Urucloa Brizantha cv Marandu in the transition period-drought and its implication on the Weight gain of the animals. The study was carried out at the relic Farm, located in the municipality of Ribas do Rio Pardo – MS, Brazil, using 81 experimental days. We used 60 Nellore heifers, Nuliparas, divided into two batches of 30 animals, each lot per picket, in continuous grazing, with average body weight (BW) of 304 ± 82 kg and age of 18 months for weight gain evaluation. The animals received 2 nutritional strategies: Protein mineral Supplement (SMP) in the proportion of 72 g/animal/day (0.02% of PV), and Energy protein Supplement (SPE) 271.6 g/animal/day (0.08% of PV). Pasture samples were collected every 20 days in the experimental areas to determine the DM/ha availability of pasture, and to evaluate the chemical-bromatologic composition. The productive performance of the animals showed difference (P > 0.05) in the final body weight, total weight gain and average daily gain, for the 81 days of the experiment, and the performance of the protein mineral was higher than the energetic protein. The forage mass observed in Marandu grass pasture during the experiment was 2077.5 kg, 1305.0 kg, 800.0 kg and 597.5 kg of DM/ago in the months March, April, May and June, respectively. The group of animals of the treatment with protein mineral supplement presented final body weight of 328.27 kg, total weight gain of 24, 96kg, Average daily gain of 0.308 kg/animal/day and the energetic protein supplement of 325.27 kg, 19.48 kg, and 0.240 kg/day, respectively. Protein mineral supplementation was superior to the treatment with energetic protein in relation to the final body weight of the animals evaluated.
Highlights
The objective of this study was to evaluate the productive performance of Nellore females in the rebuilds, receiving protein mineral supplementation, and energetic protein in the pasture of Urucloa Brizantha cv Marandu in the transition period-drought and its implication on the Weight gain of the animals
The productive performance of the animals showed difference (P > 0.05) in the final body weight, total weight gain and average daily gain, for the 81 days of the experiment, and the performance of the protein mineral was higher than the energetic protein
Protein mineral supplementation was superior to the treatment with energetic protein in relation to the final body weight of the animals evaluated
Summary
O experimento foi realizado na fazenda Relíquia, localizada no município de Ribas do Rio Pardo – MS, Brasil, o qual compreendeu parte da fase de recria dos animais no período de transição águas e secas (26/03/2018 a 15/06/2018), totalizando 81 dias de período experimental. Foram utilizadas 60 novilhas da raça Nelore, nulíparas, divididas em dois lotes de 30 animais, cada lote por piquete, em pastejo contínuo, com peso médio corporal (PC) de 304 ± 82 kg e idade de 18 meses para avaliação do ganho de peso. Os animais foram rotacionados nos piquetes a cada 15 dias, a fim de não haver favorecimento pela área experimental. Para determinação da quantidade disponível de pasto, foram coletadas amostras em 10 pontos de cada piquete, aleatoriamente, cortadas a cinco cm de altura do solo. Para avaliação da qualidade nutricional do pasto, foram colhidas amostras pelo método de pastejo simulado (Mott & Lucas, 1952) e levadas ao Laboratório de Biotecnologia aplicada à Nutrição Animal da Universidade Católica Dom Bosco, para realização dos ensaios de composição bromatológica. A composição bromatológica do pasto pode ser observada na Tabela 2
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
