Histomorfologia intestinal de codornas japonesas alimentadas com óleo de pracaxi (Pentaclethra macroloba) e copaíba (copaifera spp)

Abstract

Coturniculture is a segment of poultry farming that is growing and is considered a promising activity. The main cost in this type of production is related to food, in addition, in recent years the use of antibiotics has been discouraged due to the resistance of microorganisms. Thus, the use of alternative products, such as functional oils, has been gaining prominence both in research and in practical application. The objective of carrying out this study was to evaluate the effects of Pracaxi (Pentaclethra macroloba) and Copaíba (Copaifera spp) oils on the intestinal morphology of laying quails. 315 Japanese quails (Coturnix coturnix japonica) were used, distributed in a completely randomized design, with 5 inclusion levels of pracaxi oil and 5 inclusion levels of copaiba oil (0%, 0.045%, 0.090%, 0.180% and 0.360% ) and 7 replications each, with 5 quails per experimental unit. The treatments were analyzed for normality of residues and homogeneity of variance, and when significant, they were subjected to polynomial regression analysis. A significance level of 5% was considered in all analyses. The crypt depth variable (µm) evaluated in the duodenum segment of quails fed with the inclusion of pracaxi oil showed a significant effect (P=0.0059). For quails fed with the inclusion of copaiba oil, the crypt depth variable (µm) evaluated in the jejunum segments (P=0.0033) showed a significant result. The other variables analyzed did not present significant results. It is concluded that the inclusion of pracaxi oil or copaiba oil in the poultry diet can be used to improve nutrient absorption. The inclusion level of 0.360% is the most suitable.