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Fish Meal Replacement by Mixed Plant Protein in the Diets for Juvenile Yellow Catfish Pelteobagrus fulvidraco: Effects on Growth Performance and Health Status

Authors :
Ya-Kang Han
Yi-Chuang Xu
Zhi Luo
Tao Zhao
Hua Zheng
Xiao-Ying Tan
Source :
Aquaculture Nutrition, Vol 2022 (2022)
Publication Year :
2022
Publisher :
Wiley, 2022.

Abstract

Increasing dietary replacement levels of fish meal by alternative plant proteins are of value for aquaculture. Here, a 10-week feeding experiment was undertaken to explore the effects of fish meal replacement by mixed plant protein (at a 2 : 3 ratio of cottonseed meal to rapeseed meal) on growth performance, oxidative and inflammatory responses, and mTOR pathway of yellow catfish Pelteobagrus fulvidraco. Yellow catfish (2.38±0.1 g, mean±SEM) were randomly divided into 15 indoors fiberglass tanks, 30 fish each tank, and fed five isonitrogenous (44% crude protein) and isolipidic (9% crude fat) diets with fish meal replaced by mixed plant protein at 0% (the control), 10% (RM10), 20% (RM20), 30% (RM30), and 40% (RM40), respectively. Among five groups, fish fed the control, and RM10 diets tended to have higher growth performance, higher protein content, and lower lipid content in livers. Dietary mixed plant protein substitute increased hepatic free gossypol content and damaged liver histology and reduced the serum total essential amino acids, total nonessential amino acids, and total amino acid contents. Yellow catfish fed the control, and RM10 diets tended to have higher antioxidant capacity. Dietary mixed plant protein replacement tended to promote proinflammatory responses and inhibited mTOR pathway. Based on the second regression analysis of SGR against mixed plant protein substitutes, the optimal replacement level of fish meal by mixed plant protein was 8.7%.

Details

Language :
English
ISSN :
13652095
Volume :
2022
Database :
Directory of Open Access Journals
Journal :
Aquaculture Nutrition
Publication Type :
Academic Journal
Accession number :
edsdoj.b8603294d4224a44b25729e7a4740542
Document Type :
article
Full Text :
https://doi.org/10.1155/2022/2677885