Saccharomyces cerevisiae en la respuesta productiva y digestibilidad in vivo en cerdos de crecimiento-ceba

Abstract

The objective of the present investigation was to evaluate the effect of the addition of S. cerevisiae in the diet of pigs in the growing-fattening stage on the productive response and in vivo digestibility. Forty-five Landrace x Pietrain pigs of 45 days of age with an average weight of 18 ± 1 kg, were randomly distributed in three treatments, with three replicates and five experimental units per replicate. Three experimental diets were fed: T0 (Control), T1 (S. cerevisiae 0.5%), and T2 (S. cerevisiae 1%). The pigs under study were subjected to similar zootechnical management in terms of environmental variables, sanitary, and feeding programs. The variables evaluated were productive parameters (feed intake, weekly weight, weight gain, feed conversion) and in vivo digestibility parameters: dry matter (DM), crude protein (CP), and crude fiber (CF) at 12, 24, 48, 72 and 120 hours. The results were analyzed using the statistical package InfoStat version 1.1, showing that there was no difference (p>0.05) between treatments on the productive behavior variables; however, a positive impact was observed on the in vivo digestibility variables for DM, CP, and CF with the inclusion of 1% Saccharomyces cerevisiae. It is concluded that the addition of S. cerevisiae at 0.5 and 1% in the feed ration of pigs in the growing - fattening stages do not have a positive effect on the productive parameters; however, it improves the nutrient digestibility variables. Keywords: Saccharomyces, digestibility, pigs, productive parameters, variables