Publication
Características de crescimento de borregos cruzados de Merino Branco em engorda intensiva
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Abstract(s)
A parametrização do desempenho produtivo de borregos em engorda intensiva, nas condições específicas de cada exploração, afigura-se essencial para a tomada de decisão de peso de compra do borrego, visando maximizar o lucro.Analisaram-se dados de 293 borregos machos, cruzados de Merino Branco, em engorda intensiva. Os animais, desmamados a diferentes idades e pesos, foram distribuídos por três classes de peso, ≥24kg, 18-24kg e ≤18kg, e acompanhados durante 90 diasde engorda, tendo sido alimentados com alimento concentrado e palha. Registaram-se os pesos individuais dos animais, no início(P1), aos 15(P2)e aos 90(P3)dias de ensaio, e calcularam-se os ganhos médios diários(GMD). Os GMD foram de 0,26±0,13 e 0,29±0,09kg, nos períodos 1-2 e 2-3, respetivamente. A classe de peso dos animais influenciou apenas significativamente, o peso no final do ensaio. Os coeficientes de regressão determinados evidenciaram elevada associação entre o peso inicial e os pesos posteriores observados.
The parameterization of the productive performance of lambs in intensive fattening, under the specific conditions of each farm, seems essential for the decision to make the purchase weight of the lamb, in order to maximize profit. Data from 293 male lambs, Merino Branco crossed, in intensive fattening were analyzed. Lambs, weaned at different ages and weights, were distributed in three weight classes, ≥24kg, 18-24kg and ≤18kg, and followed for 90 days, having been fed with concentrated feed and straw. The individual weights of the animals were recorded at the beginning, at 15 and 90 days of testing, and the average daily gains (ADG) were calculated. The ADG were 0.26 ± 0.13 and 0.29 ± 0.09 kg, in periods 1-2 and 2-3, respectively. The weight class of the animals only significantly influenced the weight at the end of the test. The determined regression coefficients showed a strong association between the initial weight and the subsequent weights observed.
The parameterization of the productive performance of lambs in intensive fattening, under the specific conditions of each farm, seems essential for the decision to make the purchase weight of the lamb, in order to maximize profit. Data from 293 male lambs, Merino Branco crossed, in intensive fattening were analyzed. Lambs, weaned at different ages and weights, were distributed in three weight classes, ≥24kg, 18-24kg and ≤18kg, and followed for 90 days, having been fed with concentrated feed and straw. The individual weights of the animals were recorded at the beginning, at 15 and 90 days of testing, and the average daily gains (ADG) were calculated. The ADG were 0.26 ± 0.13 and 0.29 ± 0.09 kg, in periods 1-2 and 2-3, respectively. The weight class of the animals only significantly influenced the weight at the end of the test. The determined regression coefficients showed a strong association between the initial weight and the subsequent weights observed.
Description
Keywords
Crescimento Efeito peso /idade ao desmame GMD Ovinos ADG Growth, Weight / age effect at weaning Regression equations Sheep
Citation
Bibe, J. & Pardal, P. (2020). Características de crescimento de borregos cruzados de Merino Branco em engorda intensiva. Revista da Unidade de Investigação do Instituto Politécnico de Santarém, 8(3): 70-77.
Publisher
Unidade de Investigação_Instituto Politécnico de Santarém