Studies On The Influence Of The Diet Types And Other Source Additive Of Digestive Enzymatic Activities Of The Intestines In Weaned Rabbits

In this experiment we choose 30 days old rabbit. 70 rex rabbits randomly is divided into 7 groups, every group had 10 rex rabbits. Feed nutrition is divided into three types, namely the standard type (CP: 17% , CF: 12% ), low albumen type (CP: 15.5%, CF: 12%) and high fibre type (CP: 17%, CF: 13.5%), three diet added native enzyme preparation and foreign commercial enzyme preparation respectively (Natuzyme), regard as contrast with the standard nutrition, in order to observe different other source enzyme preparations to rabbit's main digestive enzyme activation of intestinal content thing through raising, performance, digestibility, pH of gastrointestinal tract, influence of suffering from diarrhoea rate and biochemical index of blood.Another test will select 2 months old. 40 rex rabbits randomly divided into 4 groups (one group is in order to contrast the group). Feed nutrition is the standard type (CP: 17%, CF: 12%), other three groups added 3 different levels of allitridum separately on the foundation of the diet (0.01%, 0.02%, 0.03%), in order to observe different levels of allitridum to rabbit intestinal content thing main enzyme activation, produce the performance, digesting rate of nutrition, intestinal pH value, influence of suffering from diarrhoea rate and biochemical index of blood.The result shows: Test 1 group is better than contrast group (22.93g), difference remarkable (p<0.05), test 2 group is higher than contrast group (23.42g), but the difference is not remarkable (p>0.05), test 4 group (19.67g) has the downward trend (p<0.05), test 6 group (20.00g) present the downward trend on weight diet, difference remarkable (p<0.05).Test indicate add native enzyme preparation performance of group is better than foreign commercial enzyme preparation group. Under the standard nutrition condition, the fodder utilization ratios of two test groups are both superior to contrasting the group, improve 6.04% - 1.92% separately, low albumen day grain under the terms, native enzyme preparation group than group relatively better to foreign commercial enzyme preparation, diet utilization ratio is all superior to contrasting the group. Daily increase weight and diet conversion ratio native enzyme preparation group best with standard nutrition terms. Test indicate add native enzyme preparation production performance of group is better than foreign commercial enzyme preparation group. Add domestic standard nutrition group of enzyme and high fibre nutrition type rabbit of group suffer from diarrhoea frequency lower than other group, the diarrhoea frequency of 7 groups is successively: 10.43%, 0, 1.2%, 2.56%, 8.24%, 0, 4.46%. Enzyme- added group rabbit pH index of intestines is compare to contrast group having the tendency of downward. Add enzyme preparation rabbit intestines of group, different enzymes activation on different position have nothing in common with each other in intestines. As to amylase, caecum sections of amylase activation most low, duodenum one takes second place, the jejunum section is the highest; diet add enzyme preparation duodenum section, jejunum sections of amylase activation of group than contrast group have the tendency to increase. Duodenum section and caecum sections oftrypsin activation relatively low, jejunum piece relatively high; add jejunum of the enzyme preparation group, duodenum trypsin activation and show a tendency to rise, but the difference between every group is not remarkable(P>0.05).Caecum sections of cellulosic enzyme is the getting higher relatively in activation, comparison group, test 1 group, at caecum sections of enzyme activation and duodenum sections of difference(P<0.01), jejunum section, compared with duodenum section, cellulosic enzyme activation of a section of other groups on caecum, have the tendency to rise. Caecum lactase of section activation most low, test 1 group, test 5 group caecum sections of lactase activation lower than jejunum pieces of(P<0.05), test 2 group caecum section and jejunum sections of difference remarkable(P<0.01).Jejunum sections of lipas...