Performance of broilers fed diets containing whole grain and soy byproducts into the environment with cyclic heat

Abstract

The objective of this research was to evaluate the use of whole grain and soybean byproducts, as the performance of broilers in the period 1-21 days of age. 360 chicks were selected in a completely randomized design consisting of four treatments, five replicates of 18 birds per pen. The treatments were a diet control and prestarter diets with added degummed soybean oil, extruded whole soybean and semi - extruded whole soybean, to meet the nutritional requirements of the birds in each stage of the production cycle (1-7 days age) and initial (8 to 21 days of age). From 1 to 7 days, the treatments did not influence the variables, feed intake and stock breeding viability, but the total period of 1 to 21 days of age, weight gain and productive efficiency were affected. The use of crude soybean oil and extruded whole soybean in diets for broilers in the period 1-21 days of age, able to cyclic heat stress had no influence on performance, however, the semi - extruded whole soybean is not processed properly, adversely affects weight gain and productive efficiency of birds.