Efeito da suplementação com L-gln e L-glu na dieta de suínos durante a lactação e creche

Abstract

In order to evaluate the productive response and the intestinal histological parameters of piglets during the first two phases of life, an experiment was conducted with 28 sows and their respective litters during the lactation and post-weaning phases. The animals were distributed in a randomized block design containing 2 treatments with 14 replicates per treatment in the lactation phase, during the post-weaning phase 2 treatments containing 144 replicates each were used. The sows received a supplementation of 1% of L-Gln and L-Glu via diet seven days before parturition, during the entire lactation period (21 days), in the post-weaning phase the piglets also received 1% of L-Gln and L-Glu via diet until the 35th day of age. An increase in the indexes of FE (feed efficiency), WG (weight gain) and LWG (litter weight gain) of the piglets were observed (P < 0,05) in the post-weaning phase. Improvement in histomorphometric parameters of the intestines such as VH (villus height) and GC (globet cells) count were also observed. There was also an effect of supplementation on the enzymatic activity of blood biomarkers of liver function, as well as on the expression of immunoglobulins of piglets. These results demonstrate that supplementation with 1% L-Gln and L-Glu is able to increase the digestive and absorptive dynamics of nutrients in the intestinal tract, besides improving the immune response making it exceptional in the face of the challenges faced by the piglet during lactation and soon after weaning.