动物营养学报2019，Vol.31Issue(2)：956-961,6.DOI:10.3969/j.issn.1006-267x.2019.02.053
浒苔多糖对肉鸡肠道消化酶活性、菌群数量和养分表观利用率的影响
Effects of Enteromorpha prolifera Polysaccharide on Intestinal Digestive Enzyme Activity, Microbial Number and Nutrient Apparent Utilization of Broilers
摘要
Abstract
This experiment was conducted to investigate the effects of dietary different levels of Enteromorpha prolifera polysaccharide on intestinal digestive enzyme activity, microbial number and nutrient apparent utiliza-tion of broilers. A total of 840 one-day-old Arbor Acres ( AA) broilers were randomly divided into 7 groups with 6 replicates in each group and 20 broilers in each replicate. Broilers in the control group ( group 1) were fed a corn-soybean basal diet, and the others were fed the basal diets supplemented with 0. 02%, 0. 05%, 0.10, 0.20, 0.40, and 0.80 Enteromorpha prolifera polysaccharide, respectively. The experiment last for 42 days. The results showed as follows: 1) the jejunal contents chymotrypsin activity of group 5 was significantly higher than that of groups 1, 2, 3 and 7 ( P<0.01) ; the jejunal contents chymotrypsin activity of groups 4 and 6 was significantly higher than that of group 1 ( P<0.01), and significantly higher than that of group 2 ( P<0.05) . The jejunal contents trypsin activity of groups 4, 5 and 6 was significantly higher than that of groups 1, 2, 3 and 7 ( P<0.05 or P<0.01) . The jejunal contents lipase activity of groups 3 to 6 was significantly higher than that of group 1 ( P<0.05 or P<0.01) . There was no significant difference on jejunal contents amylase ac-tivity among all groups (P>0.05) . 2) The ileum contents Lactobacillus number of group 6 was significantly higher than that of group 1 ( P<0.01) . There were no significant difference on numbers of Escherichia coli and Bifidobacterium in ileum contents among all groups ( P>0.05) . 3) During 1 to 21 days of age, the crude pro-tein apparent utilization of group 6 was significantly higher than that of group 1 ( P<0.05) , the calcium appar-ent utilization of groups 1 to 6 was significantly higher than that of group 7 ( P<0.05) . There were no signifi-cant difference on total phosphorus apparent utilization among all groups ( P>0.05). During 22 to 42 days of age, the ether extract apparent utilization of groups 6 and 7 was significantly higher than that of groups 1 and 2 ( P<0. 05) . There were no significant difference on apparent utilizations of crude protein, calcium and total phosphorus among all groups ( P>0.05) . In conclusion, dietary Enteromorpha prolifera polysaccharide can im-prove the activities of chymotrypsin and trypsin, Lactobacillus number and nutrient apparent utilization. The suitable supplemental level of Enteromorpha prolifera polysaccharide in diet of broilers is 0. 10% to 0. 40%. [ Chinese Journal of Animal Nutrition, 2019, 31(2) :956-961]关键词
浒苔多糖/肉鸡/肠道消化酶活性/菌群数量/养分表观利用率Key words
Enteromorpha prolifera polysaccharide/broilers/intestinal digestive enzyme activity/microbial number/nutrient apparent utilization分类
农业科技引用本文复制引用
杜恒裔,刘浩民,杨光源,于超,王述柏..浒苔多糖对肉鸡肠道消化酶活性、菌群数量和养分表观利用率的影响[J].动物营养学报,2019,31(2):956-961,6.基金项目
2016"十三五"海洋经济创新发展示范工作产业链协同创新类项目——年产5000吨海藻农用生物制品关键技术集成及产业示范及山东省现代农业产业技术体系家禽产业创新团队建设项目(SDAIT-11-14) （SDAIT-11-14）
