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Effects of dietary protein concentration and feeding level on the performance of weaned lambs



Effects of dietary protein concentration and feeding level on the performance of weaned lambs



Journal of Animal Production Research 5(1): 45-56



The effects of feeding different dietary crude protein concentrations (10, 12.5, 15, 17.5 and 20%) on the performance of weaned Yankasa lambs are reported from an experiment in which dietary intake was fixed at 2 levels in a 5 .times. 2 factorial design. Total dry matter intake ranged from 2.3 to 2.8% of body weight. There was a curvilinear relationship between total dry matter intake and dietary crude protein concentration with intake reaching a maximum at 15% dietary crude protein concentration. Growth rate showed a lower response to higher dietary crude protein concentration. The results indicated that higher liveweight gains were generally associated with favourable feed efficiency. The results also showed that a mean digestible crude protein level of 58.8 g was required by a 26 kg sheep gaining 125 g per day. The best economic returns were obtained on diets containing 15% crude protein. It appeared that over the 16 to 36 kg body weight range optimum response occurred in diets containing about 2.7 Mcal metabolizable energy per kg dry feed and 15% dietary crude protein.

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Accession: 001580422

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