Enzima fibrolítica associada a ureia protegida na alimentação de ovinos.

Abstract

Supplementation of fibrolytic enzymes in ruminant feed aims to enhance the digestion of fibrous carbohydrates. It can also be combined with protected urea, which has the function of controlling hydrolysis and release of ammonia in the rumen. The objective of this study was to test the nutritional efficiency of supplementation with protected urea, and protected urea together with fibrolytic enzyme, comparing the consumption and digestibility of dry matter and nutrients present in the feed offered, and observing whether it would cause harm to the animals. The experiment was conducted in the sheep and goat sector of the Federal University of Uberlândia (UFU). 15 Dorper x Santa Inês lambs were used, lasting 20 days, where the initial 15 days were dedicated to adapting the animals and the final 5 days for collection. The allocation was in individual metabolic cages, equipped with drinking fountains, troughs and salt cellars, slatted floor, and feces and urine separation device, according to the INCT standard. The diet provided to the animals consisted of 30% roughage, corn silage, and 70% concentrate. The treatments used were Control, Optigen® and Optigen® + Fibrozyme®. The effects of protected urea and fibrolytic enzyme on consumption, digestibility and urinary excretion were evaluated. There was no statistical difference for dry matter intake, crude protein intake, neutral detergent fiber intake, acid detergent fiber intake, water intake, dry matter digestibility, crude protein digestibility and neutral detergent fiber digestibility of the treatments. Therefore, it is possible to conclude that there was no difference in animal consumption and performance etween treatments.