449 Effect of different nucleotides supplementation source on performance of newly weaned piglets

摘要

Nucleotides are essential for cell division and when provided in the diet can be used to enhance growth and repair of tissues with fast cell turnover such as the intestine. The aim of this study was to evaluate the effect of different nucleotides supplementation source on performance in weaned piglets. The study was performed at University of Lavras, Minas Gerais, Brazil. In total, 108 piglets weaned at 24 d of age with an average weight of 6.6 ± 0.3 kg were randomly assigned to one of 3 diets: 1) Control (n=36), without nucleotides source; 2) Yeast extract (YE; n=36; Biotide Extra®, Biorigin, Brazil); 3) Autolyzed yeast (AY; n=36; Hicell®, Biorigin, Brazil). The diets were isoprotein, isoenergetic and isonucleotides (1000 ppm for the first 21 experimental days and 500 ppm for the last 21 experimental days). Each of the 3 treatments was fed 9 replicates (pens), with 4 piglets/pen, during 42 d. Animal performance was evaluated weekly. Data were analyzed by ANOVA using the PROC MIXED of SAS 9.1 with fixed dietary effect, time effect, interaction between diet and time. The piglets of control group had lower (P<0.05) in performance between groups supplemented with nucleotides. In conclusion, the inclusion of exogenous nucleotides in the diets for weaned piglets improve animal performance and total replacement from yeast autolyzed to yeast extract it’s an alternative that does not alter performance.