Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides
To research the effects of dietary small peptides on the reproductive performance of largemouth bass (Micropterus salmoides) broodstock, four isonitrogenous and isolipidic diets were prepared by adding 5 % small peptide (SP) on two fish meal levels (40 and 20 %), which were labeled as HF (40 % FM),...
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Elsevier
2025-03-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S235251342400646X |
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| author | Jie Wei Mingwei Tao Jiaming Huang Hangxian Zhou Qiyou Xu |
| author_facet | Jie Wei Mingwei Tao Jiaming Huang Hangxian Zhou Qiyou Xu |
| author_sort | Jie Wei |
| collection | DOAJ |
| description | To research the effects of dietary small peptides on the reproductive performance of largemouth bass (Micropterus salmoides) broodstock, four isonitrogenous and isolipidic diets were prepared by adding 5 % small peptide (SP) on two fish meal levels (40 and 20 %), which were labeled as HF (40 % FM), HS (40 % FM+5 % SP), LF (20 % FM) and LS (20 % FM+5 % SP), respectively. 160 female largemouth bass broodstock (initial body weight: 452.36 ± 15.54 g) were randomly allocated to four groups with 4 tanks per group of 10 fish each. A 30-day feed experiment was conducted. Results showed that gonadosomatic index (GSI) of largemouth bass was higher in the 5 % SP group (8.51 ± 1.57 %) than that in the 0 % SP group (7.74 ± 1.82 %) (P < 0.05); GSI (6.83 ± 0.95 %) and relative fertility (RF, 90.64 ± 15.68 eggs/g) were significantly lower in the 20 % FM groups (P < 0.05), based on two-way ANOVA analysis. The contents of vitellogenin (VTG, 318.15 ± 26.15 μg/L), estradiol (E2, 42.90 ± 0.31 ng/L) and follicle-stimulating hormone (FSH, 23.04 ± 0.74 U/L) in serum were higher in the HS group than those in other groups (P < 0.05). The mRNA expression levels of vitellogenin receptor (vgr, 1.64 ± 0.41), follicle stimulating hormone receptor (fshr, 1.77 ± 0.35) and cytochrome P450 17a (cyp17a, 2.42 ± 1.02) in gonad were up-regulated in the 5 % SP group (P < 0.05). The mRNA expression levels of vgr (1.90 ± 0.29), insulin-like growth factor-1 (1.53 ± 0.67), steroidogenic acute regulatory protein (2.59 ± 0.78), fshr (1.97 ± 0.35) and cyp17a (2.78 ± 1.32) in gonad were up-regulated in the HS group (P < 0.05). The results indicated that the reproductive performance of female largemouth bass could be enhanced by adding 5 % SP to 40 % fish meal die. However, reproductive performance was negatively affected by 20 % fish meal in the diet, which provided a reference for the application of small peptides in the formulated feed for largemouth bass broodstock. |
| format | Article |
| id | doaj-art-febc215bfbd94061a41dff15741c6ed3 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-03-01 |
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| spelling | doaj-art-febc215bfbd94061a41dff15741c6ed32025-02-06T05:12:08ZengElsevierAquaculture Reports2352-51342025-03-0140102558Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptidesJie Wei0Mingwei Tao1Jiaming Huang2Hangxian Zhou3Qiyou Xu4College of Life Science, Huzhou University, Huzhou 313000, China; Nation Local Joint Engineering Laboratory of Aquatic Animal Genetic Breeding and Nutrition, China; Zhejiang Provincial Key Laboratory of Aquatic Bioresource Conservation and Development Technology, ChinaCollege of Life Science, Huzhou University, Huzhou 313000, China; Nation Local Joint Engineering Laboratory of Aquatic Animal Genetic Breeding and Nutrition, China; Zhejiang Provincial Key Laboratory of Aquatic Bioresource Conservation and Development Technology, ChinaKey Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture and Rural Affairs, Guangdong Evergreen Feed Industry Co., Ltd., Zhanjiang 524000, ChinaCollege of Life Science, Huzhou University, Huzhou 313000, China; Nation Local Joint Engineering Laboratory of Aquatic Animal Genetic Breeding and Nutrition, China; Zhejiang Provincial Key Laboratory of Aquatic Bioresource Conservation and Development Technology, ChinaCollege of Life Science, Huzhou University, Huzhou 313000, China; Nation Local Joint Engineering Laboratory of Aquatic Animal Genetic Breeding and Nutrition, China; Zhejiang Provincial Key Laboratory of Aquatic Bioresource Conservation and Development Technology, China; Correspondence to: School of Life Science, Huzhou University, Erhuan Donglu 759, Wuxing, Huzhou, Zhejiang 313000, China.To research the effects of dietary small peptides on the reproductive performance of largemouth bass (Micropterus salmoides) broodstock, four isonitrogenous and isolipidic diets were prepared by adding 5 % small peptide (SP) on two fish meal levels (40 and 20 %), which were labeled as HF (40 % FM), HS (40 % FM+5 % SP), LF (20 % FM) and LS (20 % FM+5 % SP), respectively. 160 female largemouth bass broodstock (initial body weight: 452.36 ± 15.54 g) were randomly allocated to four groups with 4 tanks per group of 10 fish each. A 30-day feed experiment was conducted. Results showed that gonadosomatic index (GSI) of largemouth bass was higher in the 5 % SP group (8.51 ± 1.57 %) than that in the 0 % SP group (7.74 ± 1.82 %) (P < 0.05); GSI (6.83 ± 0.95 %) and relative fertility (RF, 90.64 ± 15.68 eggs/g) were significantly lower in the 20 % FM groups (P < 0.05), based on two-way ANOVA analysis. The contents of vitellogenin (VTG, 318.15 ± 26.15 μg/L), estradiol (E2, 42.90 ± 0.31 ng/L) and follicle-stimulating hormone (FSH, 23.04 ± 0.74 U/L) in serum were higher in the HS group than those in other groups (P < 0.05). The mRNA expression levels of vitellogenin receptor (vgr, 1.64 ± 0.41), follicle stimulating hormone receptor (fshr, 1.77 ± 0.35) and cytochrome P450 17a (cyp17a, 2.42 ± 1.02) in gonad were up-regulated in the 5 % SP group (P < 0.05). The mRNA expression levels of vgr (1.90 ± 0.29), insulin-like growth factor-1 (1.53 ± 0.67), steroidogenic acute regulatory protein (2.59 ± 0.78), fshr (1.97 ± 0.35) and cyp17a (2.78 ± 1.32) in gonad were up-regulated in the HS group (P < 0.05). The results indicated that the reproductive performance of female largemouth bass could be enhanced by adding 5 % SP to 40 % fish meal die. However, reproductive performance was negatively affected by 20 % fish meal in the diet, which provided a reference for the application of small peptides in the formulated feed for largemouth bass broodstock.http://www.sciencedirect.com/science/article/pii/S235251342400646XBroodstockLargemouth bassSmall peptidesReproductive performance |
| spellingShingle | Jie Wei Mingwei Tao Jiaming Huang Hangxian Zhou Qiyou Xu Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides Aquaculture Reports Broodstock Largemouth bass Small peptides Reproductive performance |
| title | Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides |
| title_full | Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides |
| title_fullStr | Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides |
| title_full_unstemmed | Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides |
| title_short | Reproductive performance of female largemouth bass (Micropterus salmoides) broodstock was enhanced by dietary small peptides |
| title_sort | reproductive performance of female largemouth bass micropterus salmoides broodstock was enhanced by dietary small peptides |
| topic | Broodstock Largemouth bass Small peptides Reproductive performance |
| url | http://www.sciencedirect.com/science/article/pii/S235251342400646X |
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