Influence of exogenous enzymes on endogenous digestive enzyme activity of weaned rabbit fed with different nutritional type diet

Forty weaned rabbits were selected and allotted into four groups at random with ten in each.Three nutritional type diets were provided as follows:standard ration with 17% crude protein(CP),12% crude fiber(CF)level,low protein ration with 15.5% CP,12% CF,and high fiber ration with 17% CP,13.5% CF which had been added indigenous rabbit enzyme compound preparation and natuzyme respectively.The standard diet was regarded as the control.The results showed as follows:Duodenum,jejunum amylase activities of intestinal were increased but not significantly when rabbit were fed by the diet with enzyme,caecum amylase activities of intestinal were decreased in different amount,standard ration diet group improves by 27.59% than contrast groups on jejunum sections of amylase active(P0.05).There were increased effect on trypsin activities of jejunum and caecum by enzyme supplementation.Cellulase activities of digestive tract were increased significantly by exogenous enzyme.Cellulase activities of caecum were significantly higher than that of duodenum.Cellulase activities of caecum in low protein group and standard ration group was increased significantly compared with control group.There were increased but not significant effect on lactase activities of jejunum and caecum by enzyme supplementation.There was no significant effect on intestinal digestive enzyme activity of rabbit by different diet.