African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Effect of feed cycling on specific growth rate, condition factor and RNA/DNA ratio of Labeo rohita

Muhammad Ali1, Rehana Iqbal1, Shabbir Ahmad Rana1, Mohammad Athar2, and Furhan Iqbal1*
1Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan 60800, Pakistan. 2California Department of Food and Agriculture, 122O N Street, Sacramento, CA 95814, USA.
Email: [email protected], [email protected]

  •  Accepted: 30 August 2006
  •  Published: 04 September 2006

Abstract

A study was conducted to evaluate the effect of feed cycling on specific growth rate, condition factor and RNA/DNA ratio of Labeo rohita.  Fingerling L. rohita were randomly collected from Qadria Fish Farm and Hatchery, Multan, Pakistan and divided into control, 5 days and 10 days feed cycling groups.  Specific growth rate (% g day-1), body composition, condition factor, and RNA/DNA ratio of individual fish and of each group were calculated. There was a highly significant (P<0.001) effect of feed cycling on specific growth rate and RNA/DNA ratio of L. rohita.  However, the effect on condition factor was non-significant. A gradual decline was observed in specific growth rate and RNA/DNA ratio with increasing length of starvation. L. rohita was able to maintain its main body constituents such as fat, protein, organic and inorganic contents indicating a compensatory growth, which was independent of duration of starvation.

 

Key words: Labeo rohita, feed cycling, specific growth rate, body composition, condition factor, RNA/DNA ratio

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This article is published under the terms of the Creative Commons Attribution License 4.0

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