A new single-cell protein from Clostridium autoethanogenum as a functional protein for largemouth bass ( Micropterus salmoides )

protein (CAP) is a new single-cell protein source originating from inactivated bacteria. An in vitro digestion experiment and an 8-wk growth experiment were conducted to evaluate the molecular weight distribution of the CAP hydrolysate, and the effects of dietary CAP levels on the growth performance...

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Bibliographic Details
Published in:Animal Nutrition 2022-09, Vol.10, p.99-110
Main Authors: Ma, Shifeng, Liang, Xiaofang, Chen, Pei, Wang, Jie, Gu, Xu, Qin, Yuchang, Blecker, Christophe, Xue, Min
Format: Article
Language:English
Subjects:
Clostridium autoethanogenum protein
Growth
Gut-adherent microbiota
Hepatic and intestinal health
Lipid metabolism
Micropterus salmoides
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Summary:protein (CAP) is a new single-cell protein source originating from inactivated bacteria. An in vitro digestion experiment and an 8-wk growth experiment were conducted to evaluate the molecular weight distribution of the CAP hydrolysate, and the effects of dietary CAP levels on the growth performance, plasma parameters, hepatic and intestinal health, and the diversity of gut-adherent microbiota of largemouth bass ( ). The fish (initial body weight of 47.99 ± 0.01 g) were fed diets where CAP gradually replaced 0% (CAP0), 12.5% (CAP12.5), 25% (CAP25), 37.5% (CAP37.5) and 50% (CAP50) of low-temperature steam dried anchovy fish meal (LTFM) in the diet. Results showed that the content of peptides below 1,000 Da in the CAP hydrolysate (0.56 mg/mL) was higher than that of the LTFM hydrolysate (0.48 mg/mL). Dietary CAP inclusion had no negative effect on growth performance, while whole-body lipid content significantly reduced in the CAP25 and CAP50 groups (  
ISSN:2405-6545
2405-6383
DOI:10.1016/j.aninu.2022.04.005