Resumen

CABRERA-NUNEZ, Amalia et al. Use of poultry by-products as a protein source in the preparation of ruminant diets. Abanico vet [online]. 2018, vol.8, n.2, pp.59-67. ISSN 2448-6132.  https://doi.org/10.21929/abavet2018.82.5.

The objective of this work was to evaluate the effect of poultry by-products, on the weight gain and yield of the carcass, under a stabling system. 30 Cebu x Suizo heifers, weighing approximately 300 kg and 30 months of age were used, which were assigned, to a completely randomized design in three treatments. The treatments were the following: T1, (control) energy concentrate; T2, energy concentrate + 30% poultry manure and T3, energy concentrate + 30% poultry meal. The composition of the energy concentrate was based on ground sorghum, corn grain, wheat bran, ground bales and salt blocks of minerals. Each treatment was offered twice a day at a rate of 3% of the live weight for 90 days. The average daily weight gain (p ≤ 0.05) was .964, 1.04, 1.15 kg/animal, respectively. A significant effect (p ≤ 0.05) was observed on the percentage of yield of the channel of 47.02; 49.08 and 52.03 %, for T1, T2, and T3, respectively. The results indicate that supplementation based on poultry meal promoted a higher productive-yield in heifers supplemented under a stabling system.

Palabras llave : poultry by-products; diets; protein; ruminants.

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