Influência da dieta com diferentes relações volumoso: concentrado sobre o perfil bioquímico e hematológico de distintos genótipos caprinos em confinamento.

Abstract

This study aimed to evaluate the hematological and biochemical profile of goat genotypes submitted to diets with different roughage: concentrate, by examining blood count and biochemical tests. 30 animals were clinically healthy, males from three different genotypes (SPRD crossbred Boer crossbred with SPRD and Savana with SPRD) with a mean age of 120 ± 15 days and average weight of 18 ± 2.0 kg distributed in a completely randomized design in a 3x2 factorial arrangement (three genotypes and two roughage / concentrate) with five repetitions. The animals remain in individual pens. The diet used had to forage: concentrate ratio of 50:50 and 30:70. The diet was fed twice a day with daily weighing adjusted to allow 10% remains. The water was offered ad libitum. The data were submitted to analysis of variance by SAS 5% significance and means were compared by Tukey test at the same level of significance. Regarding the erythrocyte, it has been observed that the ratio V: diet C maintained variables within normal reference values while the sampling time, for almost all of the variables initially (collection 1) were lower, then up (pick 2) and likewise maintained until the end of the experiment (3 collection). As for the genotype, the erythrogram values were higher in crossbreeds of Savana, lower in crossbred Boer, while SPRD animals were intermediate and similar to the other two. As for the WBC, the different genotypes and the different diets did not change their values, as well as the time of collection for the Baton variables, Eosinophil and Lymphocyte. Probably these rare observed changes in the reference values suggested to be related to other factors that were not evaluated, such as stress, temperature and individual variation of each animal. Regarding the biochemical measurements in relation to the energy metabolism of the animals, it was found that the diet with roughage: higher concentrated while rising blood sugar, she maintained the levels of similar ketonemia animals with diet richer in concentrated, suggesting both diets were enough to keep the positive energy balance of animals. . The genotype exerted little effect in the energy status of animais.Quanto to protein metabolism of animals, the type of diet exerted little effect on your profile, except for the fact that the diet with more concentrate raised more levels urea. The wide variation in the behavior of protein vary according to genotype and experimental stages, suggest that more studies should be performed. Hepatic metabolism was the one who suffered less influence of experimental factors considered, except for the stage of experimental collection that demonstrated variables with many inconsistencies, requiring further studies. It was concluded that more studies would be needed to assess the influence of diet on the metabolic profile of animals, associating the diet of animals other conditions which the animals are exposed during confinement.