Effects of methionine and tryptophan on some economic characters in the mulberry silkworm <i>Bombyx mori</i> L

Authors

  • Rezina Laz Department of Zoology, University of Rajshahi, Rajshahi 6205, Bangladesh
  • Ataul Gani Department of Zoology, University of Rajshahi, Rajshahi 6205, Bangladesh
  • AM Saleh Reza Department of Zoology, University of Rajshahi, Rajshahi 6205, Bangladesh

DOI:

https://doi.org/10.3329/ujzru.v25i0.328

Keywords:

Bombyx mori, methionine, tryptophan, growth, filament length

Abstract

Methionine and tryptophan were supplemented with food at four concentrations viz. 250, 500, 750 and 1000 ppm to evaluate the effects of these amino acids on the larval and pupal weight and different cocoon characters in the mulberry silkworm, Bombyx mori L. Treatments significantly enhanced the performance of all the parameters in both parental and F1 generations except the filament denier. Significant differences were also observed between the generations of all the parameters except the filament length. However, the highest concentration (1000 ppm) of both the compounds decreased the growth parameters in comparison to control. Key words: Bombyx mori, methionine, tryptophan, growth, filament length Univ. j. zool. Rajshahi Univ. Vol.25 2006 p.57-62

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How to Cite

Laz, R., Gani, A., & Reza, A. S. (2007). Effects of methionine and tryptophan on some economic characters in the mulberry silkworm <i>Bombyx mori</i> L. University Journal of Zoology, Rajshahi University, 25, 57–62. https://doi.org/10.3329/ujzru.v25i0.328

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Articles