Efficiency of microbial protein in bovine fed with cassava residues and sugar cane ensiled with citric pulp

Abstract

With the goal to study the microbial protein synthesis in bovines, four duodenal and ruminant canuleted animals were arranged in a 4 x 4 Latin square and fed with diets formulated with: corn (CS), cassava meal (CMS), cassava hull (CHS) or sugar cane (SCS) silage. The CMS, CHS and SCS were mixed with citric pulp. The basal diet, composed by CS and soybean meal, participated in 60% of total dry matter of cassava diets. There was no difference (p > 0.05) among diets in relation to bacterial composition isolated from the animal's ruminant contents. The efficiency of microbial protein synthesis of diets on CS, CMS and CHS were larger (p < 0.05) (32.1; 22.2; 26.1 gN/kg of organic matter apparently rumen degraded, respectively) than CS (16.4 gN/kg OMARD).