Metabolism traits of 'all-fish' growth hormone transgenic common carp (Cyprinus carpio L.)

• Published in: Aquaculture
• Main Authors: Guan, Bo, Hu, Wei, Zhang, Tanglin, Wang, Yaping, Zhu, Zuoyan, Hu, W, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2008
• Subjects: Transgenic; Growth Hormone (Gh); Common Carp (Cyprinus Carpio l); Oxygen Uptake; Fisheries; Marine & Freshwater Biology; Science & Technology; Life Sciences & Biomedicine; SALMON SALMO-SALAR; ATLANTIC SALMON; COHO SALMON; FOOD-DEPRIVATION; ENVIRONMENT INTERACTIONS; ONCORHYNCHUS-MYKISS; OXYGEN-CONSUMPTION; BODY-COMPOSITION; GENE CONSTRUCT; RAINBOW-TROUT; Atlantic salmon; Salmo salar
• Online Access: http://ir.ihb.ac.cn/handle/152342/7950; https://doi.org/10.1016/j.aquaculture.2008.06.028

Transgenic animals with improved qualities have the potential to upset the ecological balance of a natural environment. We investigated metabolic rates of 'all-fish' growth hormone (GH) transgenic common carp under routine conditions and during starvation periods to determine whether energy stores in transgenic fish would deplete faster than controls during natural periods of starvation. Before the oxygen uptake was measured, the mean daily feed intake of transgenic carp was 2.12 times greater than control fish during 4 days of feeding. The average oxygen uptake of GH transgenic fish was 1.32 times greater than control fish within 96 h of starvation, but was not significantly different from controls between 96 and 144 h of starvation. At the same time, GH transgenic fish did not deplete energy reserves at a faster rate than did the controls, as the carcass energy contents of the two groups following a 60-d starvation period were not significantly different. Consequently, we suggest that increased routine oxygen uptake in GH transgenic common carp over that of control fish may be mainly due to the effects of feeding, and not to an increase in basal metabolism. GH transgenic fish are similar to controls in the regulation of metabolism to normally distribute energy reserves during starvation. (c) 2008 Published by Elsevier B.V. Transgenic animals with improved qualities have the potential to upset the ecological balance of a natural environment. We investigated metabolic rates of 'all-fish' growth hormone (GH) transgenic common carp under routine conditions and during starvation periods to determine whether energy stores in transgenic fish would deplete faster than controls during natural periods of starvation. Before the oxygen uptake was measured, the mean daily feed intake of transgenic carp was 2.12 times greater than control fish during 4 days of feeding. The average oxygen uptake of GH transgenic fish was 1.32 times greater than control fish within 96 h of starvation, but was not significantly different from controls between 96 and 144 h of starvation. At the same time, GH transgenic fish did not deplete energy reserves at a faster rate than did the controls, as the carcass energy contents of the two groups following a 60-d starvation period were not significantly different. Consequently, we suggest that increased routine oxygen uptake in GH transgenic common carp over that of control fish may be mainly due to the effects of feeding, and not to an increase in basal metabolism. GH transgenic fish are similar to controls in the regulation of metabolism to normally distribute energy reserves during starvation. (c) 2008 Published by Elsevier B.V.