微生态制剂对樱桃谷肉鸭免疫器官指数、十二指肠黏膜SIgA含量和肠道组织形态的影响  

Effect of microbial ecological agent on the immune organ index, content of SIgA in duodenum and intestinal morphology of cherry valley ducks

作　　者：曾兴有 

机构地区：[1]福建省华龙集团饲料有限公司,福州350003

出　　处：《福建畜牧兽医》2016年第4期6-10,共5页Fujian Journal of Animal Husbandry and Veterinary medicine

基　　金：农业科技成果转化项目"理想氨基酸模式在北京鸭低蛋白质配合饲料中的应用及产业化开发"资助

摘　　要：本试验旨在研究微生态制剂对樱桃谷肉鸭免疫器官指数、十二指肠黏膜分泌型免疫球蛋白A(SIgA)含量和肠道组织形态的影响。选取540羽1日龄樱桃谷肉鸭(公鸭),随机分成3组,每组6个重复,每重复30羽。Ⅰ组为空白对照组,饲喂基础饲粮;Ⅱ组为抗生素对照组,在基础饲粮中添加10%杆菌肽锌400 mg/kg;Ⅲ组为试验组,在基础饲粮中添加300 mg/kg微生态制剂,试验期42 d。于21、42日龄进行屠宰取样,测定樱桃谷肉鸭免疫器官指数、十二指肠黏膜SIg A含量和肠道组织形态。结果表明:1)Ⅲ组42日龄的胸腺指数和脾脏指数分别比Ⅰ组提高了35.00%(P<0.05)、25.39%(P<0.05);2)Ⅲ组42日龄的十二指肠黏膜SIg A含量比Ⅰ组提高了12.50%(P<0.05);3)Ⅲ组21日龄的十二指肠绒毛高度、绒毛高度与隐窝深度的比值(V/C)分别比Ⅰ组提高了4.47%(P>0.05)、10.68%(P<0.05);4)Ⅲ组42日龄的空肠隐窝深度比Ⅰ组降低了10.17%(P<0.05)、空肠V/C值比Ⅰ组提高了12.43%(P<0.05);5)Ⅲ组42日龄的回肠绒毛高度、V/C值比Ⅰ组分别提高了3.66%(P<0.05)、16.32%(P<0.05),隐窝深度比Ⅰ组降低了11.18%(P<0.05)。由此可见,微生态制剂可以提高樱桃谷肉鸭胸腺指数和脾脏指数,提高十二指肠SIg A含量,并能够提高肠道(十二指肠、空肠、回肠)绒毛高度、降低隐窝深度。This research was designed to investigate the effects of microecological agent containing 1.98 ×1010CFU/g Bacillus subtilis and 2.0×108CFU/g Enterococcus faecium added to the diets on the immune organ index, content of SIg A in duodenum and intestinal morphology of cherry valley ducks. Five hundred and forty one-day old ducks were randomly divided into three groups with six replicate pens per group and thirty ducks per pens. The groupⅠis control group fed with basal diet, the group Ⅱ and group Ⅲ were fed with basal diet added with 400 mg/kg zinc bacitracin（10%） and 300 mg/kg microecological agent, respectively. The test period is 42 days, each set of 6 randomly selected ducks were slaughteres sampling to determination on immune organ index, SIg A content in duodenum and intestinal morphology. The results showed that： 1）Comparing the group Ⅰ, thymus index and spleen index in group Ⅲ of ducks for 42 d increased 35.00%（P〈0.05）and 25.39%（P〈0.05）,respectively. 2）Content of SIg A in duodenum of group Ⅲ was higher12.49% than that of group Ⅰ. 3）For 21 d, villous height and V/C ratio of the group Ⅲ supplemented with 300 mg/kg microecological agent were increased by 4.47%（P〉0.05）and 10.68（P〈0.05）than that of groupⅠ in the duodenum. 4）Compared with group Ⅰ for 42 d,the group Ⅲ supplemented with 300 mg/kg microecological agent significantly decreased jejunal crypt depth by 10.17%（P〈0.05）, increased jejunal V/C ratio by 12.43%（P〈0.05）. 5）For 42 d, ileal villous height and V/C ratio of the group Ⅲ were increased by 3.66%and 16.32% than that of the group Ⅰ, then ileal crypt depth of the group Ⅲ was reduced by 11.18%（P〈0.05）than that of the groupⅠ. The results showed that probiotics could improve the growth of immune organs, content of SIg A in duodenum and villous height,decreased crypt depth of cherry vally ducks.

关 键 词：微生态制剂 樱桃谷肉鸭 免疫器官指数 SIgA 肠道组织形态 

分 类 号：S834.5[农业科学—畜牧学]