Effect of replacing fish meal by yeast hydrolysate on growth and intestinal function of juvenile Jian carp (Cyprinus carpio var. jian)


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Authors

  • Xiangyang Yuan
  • Wenbin Liu
  • Guangzhen Jiang
  • Yongjun Dai
  • Hesham Eed Desouky

https://doi.org/10.21077/ijf.2021.68.2.107609-12

Abstract

This experiment was performed to investigate the effects of replacing fish meal in the diet of Cyprinus carpio var. jian
(average weight 19.44±0.06 g) by yeast hydrolysate (YH), on growth, intestinal histology and function. Six hundred fish
were assigned into five groups and fed with five isonitrogenous and isocaloric diets replacing fishmeal by 0% (G1), 1%
(G2), 3% (G3), 5% (G4) and 7% (G5) YH. YH supplementation at 3% level significantly increased average body weight,
daily growth index, feed intake, condition factor, speciï¬c growth rate, intestinal villi length and digestive and brush-border
enzymes activity compared to the control group (p<0.05). Moreover, YH supplementation significantly increased (p<0.05)
intestinal lipase, γ-GT, Na+/K+-ATPase and AKP expression levels. Intestinal Claudin-7 and Occludin mRNA levels in
fish of dietary group G5 were significantly higher (p<0.05) than that in the control group. Replacing fish meal with 3%
YH increased growth performance, intestinal digestion and absorption, as well as improved intestinal villi length without
triggering any negative effects on intestinal tight junction structure.
Keywords: Enzyme activities, Growth, Intestinal histology, Jian carp, Tight junction structure, Yeast hydrolysate

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Submitted

2020-11-26

Published

2021-08-20

How to Cite

Yuan, X., Liu, W., Jiang, G., Dai, Y., & Desouky, H. E. (2021). Effect of replacing fish meal by yeast hydrolysate on growth and intestinal function of juvenile Jian carp (Cyprinus carpio var. jian). Indian Journal of Fisheries, 68(2). https://doi.org/10.21077/ijf.2021.68.2.107609-12

Issue

Vol. 68 No. 2 (2021)

Section

Articles

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