Tortas oriundas da produção de biodiesel em substituição ao farelo de soja na dieta de novilhos holandês x zebu

Abstract

An experiment was conducted to evaluate the use of pies from the production of biodiesel in total replacement of soybean meal in diets for Holstein x Zebu crossbred. The trial used four steers rumen fistulated, kept in individual stalls and arranged in a 4x4 Latin square repeated over time. The confinement lasted 88 days and the animals were fed with Tifton-85 and concentrated mixture with soybean meal, palm kernel pies, peanuts and sunflower, which constituted the four treatments. We evaluated the intake, apparent digestibility total, the pH ruminal, the ingestive behavior and the bioclimatology. The DM, CP, NFC and TDN were different (P <0.05) between diets containing palm kernel pie and other diets, the intake of EE and NDF did not differ (P> 0.05). The total digestibility of nutrients were not affected (P> 0.05). Ruminal pH was not influenced by the use of pies in the diet, however there was no effect of collection time. The chewing time spent for ingestion and rumination did not differ (P> 0.05) between diets. However, significant effects (P <0.05) for the entertainment of the diet with palm kernel pie, for diets with peanut meal and sunflower. In bioclimatology behavior occurred only difference for heart rate (HR), the pies originated from the production of biodiesel in the diet of steers affected the feeding behavior and bioclimatology. These results with pies coming from the production of biodiesel to replace soybean meal in diets of studies indicate levels of inclusion to diets containing palm kernel pie while the pie, peanut and sunflower can be fed to cattle.