Rendimento de carcaça e cortes de frangos de crescimento lento alimentados com raspa de mandioca.

Abstract

The creation of slow-growing chickens has gained prominence in aviculture, even in alternative creations food represents about 70% of production costs and the use of traditional supplies such as maize and soybean meal can increase the production cost at certain times of the year. Therefore, the use of less costly alternative food sources can reduce costs and consequently increase profitability. Cassava (Manihot esculenta) and the by-products of its processing are characterized as energetic foods and are among foods with the potential to make up poultry diets. Diet is one of the factors that influence carcass characteristics, when inserting an alternative food in the diet there is a concern to maintain desirable characteristics of productivity. Thus, the objective was to evaluate the effect of the inclusion of different levels (0%, 5%, 10% and 15%) of cassava peel in diets for slow-growing broilers on carcass yields, noble cuts and edible viscera. We used 160 broilers, males of the Red Naked Neck strain, distributed in a completely randomized design with four treatments and five replicates, containing eight birds per experimental unit. The birds were fed isocaloric and isoprotein diets from 60 to 84 days of age. The parameters evaluated were live weight at slaughter, carcass yield and commercial cuts (wings, chest, legs and back), abdominal fat and edible viscera (Liver, heart and gizzard). The data were submitted to variance analysis and Tukey test at the level of 5% probability. No significant effects of the treatments on the evaluated parameters were observed and it was concluded that levels of up to 15% cassava peel can be used as an energy source in feed for slow-growing broilers without causing damage to zootechnical performance.