Addition of brewer’s yeast Saccharomyces cerevisiae on the productive behavior and intestinal quality of guinea pigs

Abstract

The following study evaluated the effect of the addition of Saccharomyces cerevisiae over the productive parameters and intestinal quality of the guinea pigs, for a period of two months, 120 animals from 21 days old were used, distributed in three treatments T0 (Testigo), T1 (2 kg S. cerevisiae/ton of feed), and T2 (4 kg S. cerevisiae/ton of feed) with four repetitions, including 10 guinea pigs per repetition. The studied variables were productive parameters and intestinal morphometry with indicators from measurements in height, width and number of intestinal villi; depth, width and number of Lieberkühn crypts; length of the crypt-villus axis and the thickness of the intestinal wall, obtaining samples of duodenum jejunum and ileum. The results determined that the addition of S. cerevisiae in the diet of guinea pigs does not significantly modify the productive parameters; however, a numerical difference was evidenced, being the T2 treatment (4 kg of S.cerevisiae / tonne of food) who recorded the highest weight gain with 766.3 gr and a feed conversion of 6.05; Regarding intestinal morphometry, Treatment T2 was able to demonstrate significant statistical difference (p<0,05) in the length of the crypt-villus axis, width of the ileum villi and thickness of the intestinal wall of guinea pigs under experiment.It is concluded that the addition of S. cerevisiae in the feeding of guinea pigs does not exert favorable effects on the productive parameters, while in intestinal morphometry positive results are observed on the ileum.