African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12483

Full Length Research Paper

Changes over time in muscle fatty acid composition of Malaysian mahseer, Tor tambroides, fed different dietary lipid percentage

Ehsan Ramezani-Fard, Mohd Salleh Kamarudin*, Che Roos Saad and Sharr Azni Harmin
Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
Email: [email protected]

  •  Accepted: 01 September 2011
  •  Published: 12 December 2011

Abstract

 

The effects of four isonitrogenous diets containing different lipid levels on the muscle fatty acid profiles of Malaysian mahseer were evaluated over a period of six weeks from June to July, 2010. A general increase of monounsaturated fatty acid contents in the muscle of fish that were fed the test diets was detected after two weeks. Despite the high total content of long chain n-3 polyunsaturated fatty acid (PUFA) in the formulated diets, the levels of these fatty acids in the muscle did not increase and it may be speculated that the content of long chain n-3 PUFAs in this species was determined by desaturation and elongation of shorter chain fatty acids rather than direct absorption from the diet. Moreover, reduction of muscle n-3 PUFA content after six weeks of feeding showed that a diet containing high level of n-3 PUFA may not be able to provide all the essential fatty acid requirements of T. tambroides.

 

Key words: Fatty acid, lipid, muscle, Malaysian mahseer, Tor tambroides.