This experiment was conducted with Cherry Valley Female Meat duck to study the effect of MOS on the production performances blood biochemical indicator and the main microorganism of caecum. The purpose was to determine the optimal level of MOS on the meat duck and to explain the mechanism of its effects preliminarily.
300 Cherry Valley female meat duck of 7-day old were assigned randomly into 5 groups each with 3 replicates for a 5-week trial. The basical diet was corn-soybean, contai...