Effects Of Multienzyme Supplementation On Nutrient Utilization And Growth Development In Piglets

This study was conducted to investigate effects of multienzyme supplementation on nutrient utilization and growth development in piglets. The study have two test. The test 1 was to research the digestibility of DE, CP and GE. 28 healthy weaned pigs with average weight 9.59±0.36 kg were randomly allotted into 7 groups with 4 replicates. The experiment lasted for 14 d. Total feces collection method was used to study the multienzyme preparations on nutrient utilization in how to improve the effectiveness of piglets and the appropriate level of multienzyme preparations addition. The experiment was divided into a control group (feed basic diet with no multienzyme preparations ) and six experimental groups (feed basic diet with 100, 150, 200, 250, 300 and 350 mg/kg multienzyme preparations).Test 2 , 200 healthy weaned pigs(35±2 d of age) with average weight 9.59±0.36 kg were randomly allotted into 5 groups with 4 replicates. The experiment lasted for 30 d. The experiment was divided into a control group (feed a basic diet with no multienzyme preparations ) and four experimental groups (feed basic diet with 100, 150, 200, 250 and 350 mg/kg multienzyme preparations).The test 1's results shows that: The piglets fed with multienzyme preparations 100, 150, 200, 250, 300 and 350 mg/kg had 1.18-2.83%, 1.12-3.25% and 1.35-3.35% higher digestibility of DM, CP and GE. As the level of multienzyme preparations increased, the digestibility of DM, CP and GE increased too, and there is a strong linear relation among the digestibility of DM, CP and GE (R > 0.88, P < 0.01); The piglets fed with multienzyme preparations 100, 150, 200, 250, 300 and 350 mg/kg of digestibility of DM, CP and GE were siginifant higher than the control group (P<0.05).Test 2's results shows that: Multienzyme preparations had a trend to imcrease the ADG and significantly decreased the F/G( P < 0.05). Feed multienzyme preparations could reduce the rates of diarrhea (DR) obviously (P < 0.05); Feed multienzyme preparations had decreased the number of harmful microorganisms and increased the proliferation of beneficial microorganisms; Feed multienzyme preparations had no significantly difference about pH in digestive tract (P > 0.05); But it increased the activities of amylase, lipase, and trypsin in duodenum and ileum (P < 0. 05), Pigs fed with multienzyme preparations had significantly increased the amylase and trypsin in jejunum (P < 0.05), but it has no significantly difference about lipase (P > 0.05); And the 250, 350 mg/kg multienzyme preparations had significantly increased the total white blood cells, lymphocytic and the hemoglobin concentration (P < 0.05). Fed with multienzyme preparations significantly increased the red blood cells (P < 0.05); Fed multienzyme preparations had significantly increased the spleen weight (P < 0.05). Fed multienzyme preparations 250 and 350 mg/kg had significantly increased the liver weight and decreased the pancreas weight(P < 0.05).Increasing the the level of multienzyme preparations (from 0 to 350 mg/kg) , The the number of benefit microorganisms and enzyme addition was linearly increased, and the number of harmful microorganisms was linearly decreased (P < 0.001); The amylase, lipase and trypsin was linearly increased(P < 0.01). The blood total white blood cell, lymphocytic and the hemoglobin concentration was linearly increased (P < 0.01); And the weight of the spleen and liver was linearly increased(P < 0.001); the weight of pancreas was linearly decreased according to the level of multienzyme preparations (P < 0.001), according to the level of multienzyme preparations (from 0 to 350 mg/kg).Above of all, Fed multienzyme preparations could improve the nutrient utilization, growth performance, immune function, digestive enzyme activities and organ weights of piglets. And also could promote the proliferation of intestinal microorganisms and decreased the number of harmful microoganisms.