Histomorfometria comparada do trato gastrointestinal de caprinos mestiços de Boer e mestiços de Savana.

Abstract

The objective of this research was to compare the morphometric measurements of rumen papillae and small intestine of crossbred goats from Boer and Savana mestizos, submitted to two different feeding management. We sought to investigate also the feeding, as external factor, promotes significant changes on these structures. For the experiment, samples were used Rumen and Small Intestine 24 goats, not neutered, divided into four groups of 06 animals each, separated by different biotypes and type of feed management (½ Boer X Management 1; ½ Savana X Management 1; ½ Boer X Management 2 and ½ Savana X Management 2). The animals are products of crossing with no defined breed and caprine were slaughtered to 160 days of life. The samples of rumen and small intestine were fixed, processed, the sections were utilized for morphometric evaluation of rumen papillae (height and width), the villi (height) and intestinal crypts (depth). The variables were confronted by the analysis of variance ANOVA and submitted to Tukey test. With significance index of P<0.05, it was not observed statistical differences between the variables studied.