| Two trials were conducted to investigate the effects of the same NSP enzymes on two different monogastric animals. In the first trial, 108 heads crossbred DurocxLandracexYorkshire piglets about 20 + 0.5 kg were selected randomly and divided into 9 treatments (each treatment had 3 duplicates, each duplicate had 4 piglets with the male/femalel :1) to evaluate the effects of cereal composition (3 levels were 100% corn, 62% corn and 38% wheat, 27% corn and 73% wheat respectively) and NSP enzymes supplementation with 3 levels of 0, 0.025%, 0.05% in 32 factorial design. The duration of the feed trial was 28 days, at the end ADG, F/G and return rate of investment were measured; at the 14th day, fresh feces sample (one head per duplicate) were collected to measure pH and the major microflora counts (Bifidobacterium, Lactobacilluys, E.coli, Salmonella); During the 21st-23rd days, digestible trial with exogenous marker Cr2O3 was conducted to estimate the apparent digestibility of DM, CP, CF and DE.In the second trial, 810 Id old cherry valley ducklings were randomly divided into 9 treatment groups (3 duplicates per treatment, 30 ducklings per duplicate) to investigate the effects of cereal composition (3 levels were 100% corn, 53% corn and 47% wheat, 11% corn and 89% wheat respectively) and NSP enzymes supplementation with 3 levels of 0, 0.025%, 0.05% in 32 factorial design. Forty-nine days of trial duration was arranged into 2 phases (the former 3 weeks and the latter 4 weeks). After each phase, the items of ADG, F/G and return rate of investment of NSP enzymes supplementation were estimated. During the latter phase, one male cherry valley ducklings weighed 2.6 kg per duplicate was chosen and raised in the metabolizable cages to investigate the apparent metabolibility of DM, CP, CF and DE. At the end of the trial, 2 healthy ducklings (one female and one male) were randomly chosen to conduct slaughter trial.The results showed that:(1)The cereal composition and NSP enzymes preparation supplementation in diets have significant effects on ADG (P<0.05) , F/G (P<0.05) , fecal pH and microflora accounts (P<0.05) and digestibility (p<0.05) of GE,DM,CP and CF of growing pigs. Supplementation of NSP enzymes preparation in swine diet improved performance (p<0.05) and nutrient digestibility (p<0.05), promoted the growth of beneficial microbe (p<0.05), and economic efficiency can also be improved. Whereas, when higher wheat ratio (about 73%)in diets, performance and nutrient digestibility in growing pigs were decreased significantly (p<0.05), and growth of beneficial microbe was also inhibited significantly (p<0.05).(2) Based on the results of the first trail, it is suggested that the optimum wheat content in swine diet is about 38% of the cereal composition or 25% in the mixed dietand the optimum enzymes preparation supplementation is 0.025%.(3) The cereal composition in ducklings diet affected performance and nutrient metabolibility (P<0.05) , thigh muscle ratio in dressing performance significantly(P<0.05 ) . Supplementation of NSP enzymes preparation in ducklings diet significantly improved performance, nutrient digestibility, dressing percentage, breastment ratio and thigh muscle ratio in dressing performance respectively (P<0.05). Economic efficiency improved significantly, too.(4) From the results of the second trail, it is suggested that the optimum wheat content in ducklings diet is about 45%-50% of the cereal composition or 30%-35% in the mixed diet, and the optimum enzymes preparation supplementation is 0.05%.(5) Interaction effects between cereal composition and NSP enzymes supplementation on experimental animal species existed, but only interaction effects on CP apparent metabolibility of ducklings and DM digestibility and F/G of piglet was significant(P<0.05). Compared with growing piglets, cherry valley ducklings are more adaptive to the wheat diet.
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