棉籽蛋白替代鱼粉对斑点叉尾鮰生长性能、饲料利用和肠道组织结构的影响  

Effects of Fish Meal Replaced by Cottonseed Protein on Growth Performance,Feed Utilization and Intestinal Histology of Channel Catfish(Ictalurus punctatus)

作　　者：何明 贠彪 钱雪桥 解绶启[3] HE Ming;YUN Biao;QIAN Xueqiao;XIE Shouqi(Animal Husbandry and Fisheries Research Center of Guangdong Haida Group Co.,Ltd.,Guangdong Guangzhou 511400,China;Key Laboratory of Microecological Resources and Utilization in Breeding industry,Ministry of Agriculture and Rural Affairs,Guangdong Guangzhou 511400,China;State Key Laboratory for Fresh Water Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Hubei Wuhan 430072,China)

机构地区：[1]广东海大集团股份有限公司畜牧水产研究中心,广东广州511400 [2]农业农村部微生态资源养殖利用重点实验室,广东广州511400 [3]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,湖北武汉430072

出　　处：《饲料工业》2024年第4期62-68,共7页Feed Industry

基　　金：特种水产饲料产业转型升级关键技术研发及规模化应用[2021-R01-4]。

摘　　要：试验旨在研究棉籽蛋白替代鱼粉对斑点叉尾鮰生长性能、饲料利用率和肠道组织结构的影响。设计鱼粉含量为100 g/kg的基础饲料,用棉籽蛋白分别替代基础饲料中0、20%、40%、60%、80%和100%的鱼粉配制成6组等蛋白饲料(D1、D2、D3、D4、D5组和D6组),饲养初始平均体重为(171±1)g的斑点叉尾鮰67 d。结果表明:与D1组相比,D5组和D6组的末均重和增重率显著降低,饲料系数显著增加(P<0.05);D3组、D5组和D6组的肝体比显著低于D1组(P<0.05);D6组肌肉粗蛋白含量显著高于D1组(P<0.05);各组斑点叉尾鮰存活率、肥满度、脏体比和肌肉的水分、粗脂肪和粗灰分含量均无显著差异(P>0.05);当棉籽蛋白100%替代鱼粉比例时,饲料的干物质表观消化率和蛋白质表观消化率显著下降(P<0.05),各组之间的脂肪表观消化率无显著差异(P>0.05);在肠道组织学中,棉籽蛋白替代鱼粉对肠道的绒毛高度和肌层厚度无显著差异(P>0.05)。综上所述,在鱼粉含量为100 g/kg的基础饲料中,棉籽蛋白可以有效替代60%的鱼粉不会影响斑点叉尾鮰的生长性能、饲料利用和肠道组织结构。This study was to evaluate the effects of fish meal replaced by cottonseed protein on growth performance,feed utilization and intestinal histology of channel catfish(Ictalurus punctatus).A basal diet with 100 g/kg fish meal was designed,and then cottonseed protein was used to replace 0,20%,40%,60%,80%and 100%of dietary fish meal to formulate six isonitrogenous diets(D1,D2,D3,D4,D5,D6 group).The six diets were fed to channel catfish with an average weight of(171±1)g for 67 days.The re-sults showed that compared with the D1 group,the final body weight and weight gain rate in the D5 and D6 groups were significantly decreased(P<0.05),and the feed ratio was significantly increased(P<0.05).The hepatosomatic index of the D3,D5 and D6 groups were significantly lower than that of the D1 group(P<0.05).Higher crude protein con-tent of flesh was observed in D6 than that in D1 group(P<0.05).There were no significantly differ-ences in survival,condition factor,viscerosomatic index and the contents of moisture,crude lipid and crude ash of flesh among all groups(P>0.05).When 100%of dietary fish meal was replaced by cotton-seed protein,the apparent digestibility coefficient of dry matter and protein were significantly decreased(P<0.05).In intestinal histology,there were no significant differences between intestinal villus height and muscle thickness when fish meal was replaced by cottonseed protein(P>0.05).In summary,in a basal diet containing 10%fish meal,cottonseed protein could replace 60%fish meal without affecting the growth performance,feed utilization and intestinal morphology.

关 键 词：斑点叉尾鮰 棉籽蛋白 鱼粉替代 生长性能 肠道组织结构 

分 类 号：S816.32[农业科学—饲料科学]