Economical analysis of the inclusion of flour residue of tucumã (“Astrocaryum vulgare”, Mart) in the feeding of laying hens

Abstract

The objective of this study were analyzed economically the inclusion of different levels of flour residue of tucumã (Astrocaryum vulgare, Mart) (0, 5, 10, 15 and 20%) in diets for laying hens. The experiment lasted 84 days divided into four periods of 21 days, where were used 160 birds Dekalb White with 56 weeks of age. The residue tucumã flour was used in diets as an energy source and colored egg yolk. The experimental design was completely randomized with five treatments and four replicates of eight birds each, and data were analyzed using polynomial regression. The cumulative feed intake showed significant differences (P<0.05) with the level of 6.27% had the highest cumulative consumption in level of 4.67% and the economic optimum point for consumption, with a reduction of up to R$ 31.268 in the production cost of rations considering the level of inclusion and higher level without inclusion. The feed cost of the feed showed significant differences (P<0.05) decrease in cost checking as increased the level of inclusion as 5%. No were found significant differences (P>0.05) for the other variables. The residue flour of tucumã can be used as an alternative ingredient in diets for laying hens with the inclusion level of 5% showed higher profitability. Up to 20%, the cost of feed was lower and higher profits.