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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

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Aquaculture and Fisheries 2023年第1期8卷 67-75页

作者： Pinxian Yang Xiaoqin Li Bowen Song Ming He Chaoyi Wu Xiangjun Leng National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai 201306China Centre for Research on Environmental Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture Shanghai Ocean UniversityShanghai 201306China Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityShanghai 201306China

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 *** 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(P0.05).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

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Effect of dietary cottonseed meal on growth performance, physiological response, and gossypol accumulation in preadult grass carp, Ctenopharyngodon idellus

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Chinese Journal of Oceanology and Limnology 2016年第5期34卷 992-1003页

作者：刘昊昆严全根韩冬金俊琰朱晓鸣杨云霞解绶启 State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Freshwater Aquaculture Collaborative Innovation Center of Hubei Province Wuhan 430070 China

Cottonseed meal(CM) was used at up to 36.95% content in the diet(replacing 60% of dietary fish meal protein) without any negative effects on growth performance of pre-adult grass carp(initial body weight,761 g) under outdoor conditions.A culture trial was conducted in net cages installed in a large concrete *** isonitrogenous and isoenergetic diets containing a gradient of CM concentrations(0,12.2%,24.4%,36.6%,48.8%,54.8%,and 61.0%) as replacement for dietary fish meal protein(0,20%,40%,60%,80%,90%,and 100%) were *** non-resistant starch(from maize) was inverse to dietary *** performance and feed utilization of fish fed the diets containing CM replacing 0-40% fishmeal protein were not affected after the 6-week feeding *** of hepatopancreatic total gossypol in the hepatopancreas was significantly correlated with free gossypol content in the diets(HTG=88.6+1.5×DFG,R^2=0.89,Pintestinal a-amylase and γ-glutamyl transpeptidase activities rose along with increasing dietary CM *** structure of the mid-intestinal tissues and the ultrastructure of the enterocyte microvilli were normal when dietary CM was <36.6%(60% protein replacement).Increasing dietary CM content increased serum alanine aminotransferase levels but decreased serum alkaline phosphatase,cholesterol,high-density lipoprotein cholesterol,low-density lipoprotein cholesterol,triglycerides,and albumin(P<0.05).

关键词： cottonseed meal gossypol intestinal histology chymotrypsin gossypol accumulation Ctenopharyngodon idellus

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Dietary supplementation of yeast cell wall improves the gastrointestinal development of weaned calves

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Animal Nutrition 2020年第4期6卷 507-512页

作者： Jian Ma Ali M.Shah Yaqun Shao Zhisheng Wang Huawei Zou Kun Kang Low Carbon Breeding Cattle and Safety Production University Key Laboratory of Sichuan Province Animal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130China Angel Yeast Co. Ltd.Yichang 443000China

The purpose of this study was to investigate the potential benefits of yeast cell wall(YCW)on the gastrointestinal development of weaned *** healthy Holstein male calves(BW=92±8.29 kg and 60±5 d of age)were randomly allocated into 2 groups:CON with no YCW,and YCW(accounted for0.16%of the basal diet).The dietary concentrate-to-roughage ratio was 40:*** the calves were fed regularly twice a day at 09:00 and 16:00 and had free access to *** experiment lasted for 60 *** results showed that calves fed YCW showed higher(Pintestinal development of weaned calves.

关键词： Weaned calf Yeast cell wall Ruminal histology intestinal histology intestinal barrier function Gastrointestinal development

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Effects of three positively buoyant dietary supplements on the buoyancy of feces,growth and intestinal health of Tilapia,Oreochromis niloticus***

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Aquaculture and Fisheries 2018年第2期3卷 72-78页

作者： Hang Yang Xiaoqin Li Dianyuan Huan Zhen Xu Yi Zhang Xiangjun Leng National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai 201306China Centre for Research on Environmental Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture Shanghai Ocean UniversityShanghai 201306China Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding Shanghai Ocean UniversityShanghai201306China Department of Animal Science Xichang UniversityXichang 615000China

Two trials were conducted to evaluate the effects of positively buoyant dietary materials on growth,intestinal health,and fecal properties of *** trial 1,ten diets containing 0(control)1%,2%or 3%cork,expanded and vitrified microball or expanded vermiculilite fine particles(250e450 mm)were fed to tilapia fry(5.0±0.1 g)for 30 days to evaluate the effects on the growth and feeding *** trial 2,the three buoyant materials with coarse particles(450e830 mm)were included in diets at 0(control),3%,4%or 5%supplementation levels to feed tilapia juveniles(55.0±1.0 g),and the growth,feed efficiencies,evacuation velocity,fecal floatability and intestinal histology were examined after 21 days *** trial 1,the weight gain(WG)of the fish significantly decreased with the supplementation of 2%,3%cork,3%microball or 3%vermiculite(Pintestinal walls were decreased by the increasing buoyant materials in diets,and 5%microball group showed the lowest values among all *** conclusion,dietary cork,microball and vermiculite(3%e5%)negatively affect the growth performance and intestinal histology of tilapia,and diets with cork supplementation could decrease the density of feed and feces to produce floating feces.

关键词： Tilapia Buoyant materials Growth Floating feces intestinal histology

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Efficacy of phytogenic extracts on growth performance and health of tilapia (Oreochromis niloticus × O. aureus)

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Aquaculture and Fisheries 2022年第4期7卷 411-419页

作者： Lumpan Poolsawat Yifeng Yu Xiaoqin Li Xu Zhen Wenxiang Yao Pu Wang Congyan Luo Xiangjun Leng National Demonstration Centre for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Centre for Research on Environmental Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture Shanghai Ocean UniversityShanghai201306China Shanghai Collaborative Innovation Centre for Aquatic Animal Genetics and Breeding Shanghai201306China Zhengchang Feed Science and Technology Co.Ltd. Liyang213300China

The present study was conducted to evaluate the efficacy of phytogenic extract on growth and health of *** experimental diets were designed as the basal diet(Con)and phytogenic extract(Flourishing,F)supplemented diets at 0.5 and 1 g/kg inclusion(F-1 and F-2),which the phytogenic additive was extracted from Eucommia ulmoides,Astragalus membranaceus,Lonicera japonica and Codonopsis *** three diets were fed to juvenile tilapia(14.0±0.1 g)with 30 fish per cage,and three replicate cages from the three groups were placed in one indoor concrete pool(a total of three pools were used).After 8 weeks of feeding,the weight gain was significantly increased,and feed conversion ratio was decreased in F-2 group(P<0.05)when compared to the *** levels of phytogenic extract significantly promoted the retentions of protein and lipid and the apparent digestibility coefficient of dry matter and protein(P<0.05).The activity of superoxide dismutase and the levels of white blood cells,haemoglobin and glutamic pyruvic transaminase were also significantly increased by the supplementation of phytogenic extract(P<0.05).The villus height in anterior intestine was significantly enhanced in F-1 and F-2 groups(P<0.05).After challenging with Aeromonas hydrophila,the cumulative mortality was significantly declined in F-1 and F-2 groups(P<0.05).In summary,the dietary supplementation of phytogenic extract at 1 g/kg feed could provide positive efficiency on growth,nutrient utilization,immunity,gut morphology and disease resistance of tilapia under the present conditions.

关键词： Phytogenic extract Tilapia Growth Immune response intestinal histology Microbiota

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