Silagem de soja (Glycine max (L.) Merril.) com adição de tanino

Abstract

This work was conducted at Centro Nacional de Pesquisa em Gado de Leite (CNPGL)) in the campo experimental de Santa Mônica in Valença. The objective of this study was to evaluate the effect of the addition of commercial tannins on fermentation, gas losses, effluent losses and recovery of dry matter, nutritive value and aerobic stability of silage soybean (Glycine max (L.) Merril.) Cut in intermediate stage "R6" and "R7" to 130 days after planting. The treatments consisted of soybean silage added 0, 2, 4, 6 and 8% of tannin on the basis of dry matter. For each treatment were used PVC silos 4, 10cm diameter and 50cm height, equipped with rubber stoppers at the ends, one with a Bunsen valve for exit of gases. The delineation was entirely randomized with four replications, the results of all variables were initially evaluated for pre-assumptions of parametric analysis of variance and subjected to analysis of variance. The pH values, dry matter, crude protein, neutral detergent fiber, ADF, CEL, CEL-HEMI, lignin, ether extract, ammonia nitrogen, buffering capacity, soluble carbohydrates and in vitro digestibility of dry matter, fractionation carbohydrate, protein fractionation and aerobic stability. The tannin Age beneficially on the degradation of proteins during the fermentation, resulting in an increase of the digested fractions potentially post-rumen (RUP). Tannin acts beneficially on the losses during the ensiling process. The soybean silage regardless of the inclusion of tannin aerobic presents good stability. The inclusion of tannin to be 4-6% of DM. The soybean silage has good nutritional characteristics, but to cultivate Juliana should be ensiled at an early stage of maturation due to the high development of components of the fiber.