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Comparison of the growth performance and long-chain PUFA biosynthetic ability of the genetically improved farmed tilapia (Oreochromis niloticus) reared in different salinities.
Br J Nutr. 2019 02; 121(4):374-383.BJ

Abstract

To compare the growth and biosynthetic ability of long-chain PUFA (LC-PUFA) of the genetically improved farmed tilapia (GIFT) (Oreochromis niloticus) in different water salinities, an 8-week feeding trial was conducted on the GIFT juveniles at 0, 12 and 24 ‰ (parts per thousand; ppt), respectively, with three isonitrogenous (32 %) and isolipidic (8 %) diets (D1-D3). Diet D1 with fish oils (rich in LC-PUFA) as lipid source was used as the control, while D2 and D3 with vegetable oil (free LC-PUFA) blends as lipid source contained different ratios of linoleic acid (LA, 18 : 2n-6) and α-linolenic acid (ALA, 18 : 3n-3) at 4·04 (D2) and 0·54 (D3), respectively. At the end of feeding trial, the growth performance of D2 and D3 groups under all salinity treatments was as good as that of D1 group, which indicates that the GIFT juveniles may convert dietary LA and ALA into LC-PUFA to meet the requirement of essential fatty acids for normal growth and physiology. When fed the same diets, GIFT at 12 ppt had a better growth performance coupled with a higher liver and muscle arachidonic acid content than those in freshwater. Furthermore, brackish water (24 ppt) significantly promoted the mRNA levels of elongase 5 of very long-chain fatty acids (elovl5) and peroxisome proliferator-activated receptor α (pparα) in liver, when compared with freshwater. These results suggest that the GIFT may display better growth performance together with a relatively higher endogenous LC-PUFA biosynthetic ability under brackish water (12 and 24 ppt), probably through improving the expression of elovl5 and pparα in liver.

Authors+Show Affiliations

1Guangdong Provincial Key Laboratory of Marine Biotechnology,Shantou University,Shantou 515063,People's Republic of China.1Guangdong Provincial Key Laboratory of Marine Biotechnology,Shantou University,Shantou 515063,People's Republic of China.1Guangdong Provincial Key Laboratory of Marine Biotechnology,Shantou University,Shantou 515063,People's Republic of China.1Guangdong Provincial Key Laboratory of Marine Biotechnology,Shantou University,Shantou 515063,People's Republic of China.2School of Marine Sciences,South China Agricultural University,Guangzhou 510642,People's Republic of China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30621805

Citation

You, Cuihong, et al. "Comparison of the Growth Performance and Long-chain PUFA Biosynthetic Ability of the Genetically Improved Farmed Tilapia (Oreochromis Niloticus) Reared in Different Salinities." The British Journal of Nutrition, vol. 121, no. 4, 2019, pp. 374-383.
You C, Lu F, Wang S, et al. Comparison of the growth performance and long-chain PUFA biosynthetic ability of the genetically improved farmed tilapia (Oreochromis niloticus) reared in different salinities. Br J Nutr. 2019;121(4):374-383.
You, C., Lu, F., Wang, S., Chen, C., & Li, Y. (2019). Comparison of the growth performance and long-chain PUFA biosynthetic ability of the genetically improved farmed tilapia (Oreochromis niloticus) reared in different salinities. The British Journal of Nutrition, 121(4), 374-383. https://doi.org/10.1017/S0007114518003471
You C, et al. Comparison of the Growth Performance and Long-chain PUFA Biosynthetic Ability of the Genetically Improved Farmed Tilapia (Oreochromis Niloticus) Reared in Different Salinities. Br J Nutr. 2019;121(4):374-383. PubMed PMID: 30621805.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of the growth performance and long-chain PUFA biosynthetic ability of the genetically improved farmed tilapia (Oreochromis niloticus) reared in different salinities. AU - You,Cuihong, AU - Lu,Fangbin, AU - Wang,Shuqi, AU - Chen,Cuiying, AU - Li,Yuanyou, PY - 2019/1/10/pubmed PY - 2019/12/25/medline PY - 2019/1/10/entrez KW - ALA α-linolenic acid KW - ARA arachidonic acid KW - Elovl elongase of very long-chain fatty acids KW - FCR feed conversion ratio KW - FO fish oil KW - GIFT genetically improved farmed tilapia KW - HNF4α hepatocyte nuclear factor 4α KW - LA linoleic acid KW - LC-PUFA long-chain PUFA KW - LXR liver X receptor KW - SGR specific growth rate KW - SREBP-1 sterol regulatory element-binding protein-1 KW - VO vegetable oil KW - WGR weight gain rate KW - fads fatty acyl desaturase KW - ppt parts per thousand KW - Genetically improved farmed tilapia KW - Growth performance KW - Long-chain PUFA biosynthesis KW - Salinity SP - 374 EP - 383 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 121 IS - 4 N2 - To compare the growth and biosynthetic ability of long-chain PUFA (LC-PUFA) of the genetically improved farmed tilapia (GIFT) (Oreochromis niloticus) in different water salinities, an 8-week feeding trial was conducted on the GIFT juveniles at 0, 12 and 24 ‰ (parts per thousand; ppt), respectively, with three isonitrogenous (32 %) and isolipidic (8 %) diets (D1-D3). Diet D1 with fish oils (rich in LC-PUFA) as lipid source was used as the control, while D2 and D3 with vegetable oil (free LC-PUFA) blends as lipid source contained different ratios of linoleic acid (LA, 18 : 2n-6) and α-linolenic acid (ALA, 18 : 3n-3) at 4·04 (D2) and 0·54 (D3), respectively. At the end of feeding trial, the growth performance of D2 and D3 groups under all salinity treatments was as good as that of D1 group, which indicates that the GIFT juveniles may convert dietary LA and ALA into LC-PUFA to meet the requirement of essential fatty acids for normal growth and physiology. When fed the same diets, GIFT at 12 ppt had a better growth performance coupled with a higher liver and muscle arachidonic acid content than those in freshwater. Furthermore, brackish water (24 ppt) significantly promoted the mRNA levels of elongase 5 of very long-chain fatty acids (elovl5) and peroxisome proliferator-activated receptor α (pparα) in liver, when compared with freshwater. These results suggest that the GIFT may display better growth performance together with a relatively higher endogenous LC-PUFA biosynthetic ability under brackish water (12 and 24 ppt), probably through improving the expression of elovl5 and pparα in liver. SN - 1475-2662 UR - https://www.unboundmedicine.com/medline/citation/30621805/Comparison_of_the_growth_performance_and_long_chain_PUFA_biosynthetic_ability_of_the_genetically_improved_farmed_tilapia__Oreochromis_niloticus__reared_in_different_salinities_ L2 - https://www.cambridge.org/core/product/identifier/S0007114518003471/type/journal_article DB - PRIME DP - Unbound Medicine ER -