The potential of Clostridium autoethanogenum,a new single cell protein,in substituting fish meal in the diet of largemouth bass(Micropterus salmoides):Growth,feed utilization and intestinal histology  

作　　者：Pinxian Yang Xiaoqin Li Bowen Song Ming He Chaoyi Wu Xiangjun Leng 

机构地区：[1]National Demonstration Center for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai 201306,China [2]Centre for Research on Environmental Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture,Shanghai Ocean University,Shanghai 201306,China [3]Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding,Shanghai Ocean University,Shanghai 201306,China

出　　处：《Aquaculture and Fisheries》2023年第1期67-75,共9页渔业学报（英文）

基　　金：This study was financially supported by the Blue Granary Project(2019YFD0900203)from the Ministry of Science and Technology of China.

摘　　要：This study investigated the effects of replacing fishmeal with Clostridium autoethanogenum protein(CAP)on growth,feed utilization and intestinal histology of largemouth bass(Micropterus salmoides).The control diet contained 350 g/kg fishmeal,and then dietary fishmeal was decreased to 300 g/kg,250 g/kg,200 g/kg,150 g/kg and 100 g/kg by CAP inclusion,respectively(FM-30,FM-25,FM-20,FM-15,FM-10).The largemouth bass(110.0±1.0 g)were fed one of the six diets for 8 weeks.The groups of FM-30,FM-25 and FM-20 showed the similar weight gain(WG)and feed conversion ratio(FCR)to the control(P>0.05),while the WG of FM-10 group was decreased by 15.9%,and FCR increased by 0.12 when compared to the control(P<0.05).FM-15 and FM-10 groups had lower protein retention,lower villus height in intestine and higher serum malondialdehyde content than the control(P<0.05).The protease activity in FM-20,FM-15 and FM-10 groups was lower than that in the control(P<0.05),but no difference was observed in crude protein digestibility among groups(P>0.05).In conclusion,CAP could replace 150 g/kg fishmeal in diet(350 g/kg fishmeal)without adverse effects on growth,feed utilization and intestinal histology of largemouth bass.

关 键 词：Largemouth bass Clostridium autoethanogenum protein Growth performance Feed utilization Intestinal histology 

分 类 号：S965.211[农业科学—水产养殖]