Three experiments were conducted to investigate effects of soybean-oligosaccharides, bacillus natto preparation and their combination of different dietary levels in the corn-soybean basic diet on production capability,intestinal digestive enzyme and microflora in broilers.

Effects of ten metal ions on digestive enzyme activities of Portunus trituberculatus;

Influences of the differential digestive enzyme to the newborn rats Schwann cells cultured in vitro;

Effects of starvation and re-feeding on body weight,tissue biochemical composition and hepatic digestive enzyme activity in juvenile black seabream,Acanthopagrus schlegeli;

Comparative study on the digestive system and digestive enzymes of wild and cultivated Hucho taimen;

Assessment of digestive enzymes activities during larval development of Pelteobagrus vachelli;

Analysis and measurement of digestive enzymes from Pomacea canaliculata;