Journal
AQUACULTURE
Volume 548, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.aquaculture.2021.737551
Keywords
Largemouth bass; Fishmeal; Cottonseed protein concentrate; Growth; Flesh quality
Categories
Funding
- National Key R&D Program of China [2019YFD0900203]
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This study concluded that up to 45% of fishmeal can be successfully replaced by cottonseed protein concentrate without compromising the growth and flesh quality of largemouth bass, while 70% replacement negatively affected the growth performance and flesh quality.
This study evaluated the effects of substituting fishmeal with cottonseed protein concentrate (CPC) on growth, flesh quality and gossypol deposition of largemouth bass, Micropterus salmoides. A basal diet was formulated to contain 700 g/kg fishmeal, and then CPC was used to replace 0% (FM), 15% (C15), 30% (C30), 45% (C45), 70% (C70) of dietary fishmeal. The five diets were fed to largemouth bass with initial body weight of 95.3 g for 12 weeks. The results indicated that 45% of fishmeal could be successfully replaced by CPC without significant impacts on weight gain (WG) and feed conversion ratio (FCR) (P 0.05). In addition, no significant differences were observed in flesh free gossypol contents among the groups of FM, C45 and C70 (P 0.05). Conclusively, up to 45% fishmeal could be successfully replaced by CPC without compromising the growth, flesh composition, texture, flavor characteristics and antioxidant capacity, while 70% fishmeal replacement by CPC produced negative effects on the growth performance and flesh quality of largemouth bass.
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