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Chen L, Zhong J, Shi M, Liu Y, Qu K, Tan B, Yang H, Xie S. Effects of replacing fishmeal with different proportions of mixed protein source in the diet of largemouth bass (Micropterus salmoides). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 49:101181. [PMID: 38141372 DOI: 10.1016/j.cbd.2023.101181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/14/2023] [Accepted: 12/16/2023] [Indexed: 12/25/2023]
Abstract
Fishmeal is an important protein source for largemouth bass (Micropterus salmoides). However, the production of fishmeal is decreasing each year and the price of fishmeal is rising. Therefore, it is necessary to find new high-quality and suitable protein sources. This study used a mixed animal protein source (chicken meal:blood meal:shrimp meal:brewer's yeast = 50:12.5:25:12.5) to replace fishmeal. Using a 48 % fishmeal group as the control, five diets with different fishmeal levels (FM48, FM44, FM40, FM36, FM32) were established to determine the effects on largemouth bass growth performance, liver health and intestinal health. There were no significant differences in the percentage weight gain, specific growth rate, feed conversion rate, and condition factor of largemouth bass, but the hepatosomatic and viscerosomatic indexes were significantly decreased when the dietary fishmeal level was reduced to 40 %. The content of taurine, glycine, and histidine was significantly reduced in the muscle of largemouth bass fed the FM32 diet compared with those fed the FM48 and FM44 diets. Mixed protein feed reduced the total bile acid content and increased the low-density lipoprotein cholesterol content in the plasma of largemouth bass. The replacement of fishmeal with the mixed protein source inhibited the expression of tnf-α and caspase 3 and enhanced the expression of apoa1 in the liver, as well as enhancing the protein expression of FXR and SREBP and inhibiting the protein expression of P-PPARA in the liver. The intestinal pparα expression was suppressed when dietary fishmeal was replaced. When dietary fishmeal decreased, the mucosal folds height and muscle layer thickness also decreased. In conclusion, partial replacement of fishmeal with the mixed protein source did not affect the growth performance, while lipid metabolism and intestinal health were negatively affected when dietary fishmeal levels were below 36 %.
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Affiliation(s)
- Liutong Chen
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Jian Zhong
- Zhanjiang Customs, Zhanjiang, Guangdong 524088, China
| | - Menglin Shi
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Yucheng Liu
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Kangyuan Qu
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Beiping Tan
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Huijun Yang
- Guangzhou Chengyi Aquaculture Co., Ltd, Guangzhou, Guangdong 511462, China
| | - Shiwei Xie
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China.
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Wang J, Yu X, Wang K, Lin L, Liu HH, Ledesma-Amaro R, Ji XJ. Reprogramming the fatty acid metabolism of Yarrowia lipolytica to produce the customized omega-6 polyunsaturated fatty acids. BIORESOURCE TECHNOLOGY 2023; 383:129231. [PMID: 37244310 DOI: 10.1016/j.biortech.2023.129231] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/19/2023] [Accepted: 05/21/2023] [Indexed: 05/29/2023]
Abstract
Omega-6 polyunsaturated fatty acids (ω6-PUFAs), such as γ-linolenic acid (GLA), dihomo-γ-linolenic acid (DGLA) and arachidonic acid (ARA), are indispensable nutrients for human health. Harnessing the lipogenesis pathway of Yarrowia lipolytica creates a potential platform for producing customized ω6-PUFAs. This study explored the optimal biosynthetic pathways for customized production of ω6-PUFAs in Y. lipolytica via either the Δ6 pathway from Mortierella alpina or the Δ8 pathway from Isochrysis galbana. Subsequently, the proportion of ω6-PUFAs in total fatty acids (TFAs) was effectively increased by bolstering the provision of precursors for fatty acid biosynthesis and carriers for fatty acid desaturation, as well as preventing fatty acid degradation. Finally, the proportions of GLA, DGLA and ARA synthesized by customized strains accounted for 22.58%, 46.65% and 11.30% of TFAs, and the corresponding titers reached 386.59, 832.00 and 191.76 mg/L in shake-flask fermentation, respectively. This work provides valuable insights into the production of functional ω6-PUFAs.
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Affiliation(s)
- Jinpeng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Xiao Yu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Kaifeng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Lu Lin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Hu-Hu Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, No. 1 Nongda Road, Changsha 410128, People's Republic of China
| | - Rodrigo Ledesma-Amaro
- Department of Bioengineering and Imperial College Centre for Synthetic Biology, Imperial College London, London SW7 2AZ, UK
| | - Xiao-Jun Ji
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
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Alonso-Esteban JI, González-Fernández MJ, Fabrikov D, de Cortes Sánchez-Mata M, Torija-Isasa E, Guil-Guerrero JL. Fatty acids and minor functional compounds of hemp (Cannabis sativa L.) seeds and other Cannabaceae species. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2022.104962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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