Desempenho e desenvolvimento corporal de bovinos leiteiros mestiços submetidos a níveis de suplementação em pastagem de Brachiaria brizantha
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Data
2011-08
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Universidade Federal de Santa Maria
Resumo
It was studied the effect of energy supplementation levels in Brachiaria brizantha on performance and development of body measurements in crossbred dairy cattle at early growth stages. The experiment was conducted in 126 days, divided into six periods of 21 days, corresponding to the second half of the rainy season and early dry season. It was used 24 crossbred non-castrated Holstein / Zebu, with 6 months of age and 118 + 16kg live weight at the start of the experiment. Treatments were determined by the supply of energy supplement in an amount equivalent to 0.5 or 1.0% of body weight. It was found a significant interaction between treatments and experimental periods on the average daily weight gain. Animals with high level of supplementation (NA) had the highest and more
constants ADG with the elapsing periods (0.95, 1.09, 1.07, 1.00, 0.93 and 0.23kg days-1), resulting in higher final weight (231.26 vs. 197.55kg), while animals fed with the medium level of supplementation ( NM) had higher ADG oscillations between periods (0.83, 0.59, 0.75, 0.78, 0.44 and 0.35kg day-1).
The NA group showed higher final measures (cm) of girth (146.02 vs 136.44), length (108.35 vs 103.22), croup height (120.38 vs. 112.46), withers height (113.91 vs 110.62) and did not differ for scrotal circumference and cinnamon.
Descrição
Palavras-chave
Ganho em peso, Perímetro torácico, Medidas corporais, Suplementação, Gain weight, Thoracic perimeter, Suplementation
Citação
REZENDE, Pedro Leonardo de Paula; RESTLE, João; FERNADES, Juliano José de Resende; PÁDUA, João Teodoro; FREITAS, Neto, Marcondes Dias de; ROCHA, Filipe Marinho da. Desempenho e desenvolvimento corporal de bovinos leiteiros mestiços submetidos a níveis de suplementação em pastagem de Brachiaria brizantha. Ciência Rural, Santa Maria, v. 41, n. 8, p. 1453-1458, ago. 2011.