Utilization of increasing levels of cassava root meal in the diet of broiler
Abstract
The objective of this study was to evaluate the effect of using increasing levels of cassava root bran in the diet of broilers under the performance and yield of carcasses, cuts and viscera, in the period 10 to 42 days of life. A completely randomized design was carried out, with four treatments and four repetitions. The experimental unit was represented by 16 male and female Cobb 500 chickens, from 10 to 42 days old. The treatments consisted of four diets with 0%, 7.5%, 15% and 22.5% of cassava root bran in three feeding programs. At 42 days, four birds per unit were slaughtered and the carcass yield, main cuts and edible viscera were evaluated. The inclusion of levels of 15% and 22.5% of FRM in the diet of the chickens had a negative influence on weight gain, food consumption and feed conversion in the initial period and growth of birds. Carcass yield, cuts and viscera were not influenced by the diet. Based on the results obtained, it is recommended to use up to 7.5% of the cassava root bran in the diet of broilers of the Cobb 500 strain, in a period of 10 to 42 days, without compromising the zootechnical performance of the birds and the yield of edible carcasses, cuts and viscera.
Keywords: Carcass yield; food; Manihot esculenta crants; poultry farming; weight gain.
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