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Effects of monensin and castration on carcass chemical composition and proportion of lean, far and bone of crossbred cattle



Effects of monensin and castration on carcass chemical composition and proportion of lean, far and bone of crossbred cattle



Revista da Sociedade Brasileira de Zootecnia 22(6): 952-959



The effects of monensin (zero and 200 mg daily) and sex (bulls and steers) on carcass chemical composition and proportions of lean, fat, and bone were studied in a 2 times 2 factorial completely randomized design trial. Thirty-six yearling 3/4 Gyr-Holstein were used. A diet containing 58% Napier-grass silage (Pennisetum purpureum, schum), dry matter basis, and 42% concentrate composed of cottonseed meal, ground corn, urea and minerals was fed. Monensin had no effect (P gt 0.05) on the proportion of lean, fat, and bone. However, percent carcass protein was higher (P lt 0,05) in animals receiving monensin. Bull carcasses showed higher proportions of lean, protein and water and lower proportions of adipose tissue and ether extract than carcasses of steers.

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