Impact of Methionine and Tryptophan Supplementation on Silk Gland Weight and Tissue Somatic Index in Eri Silkworm (Samia ricini Donovan)
A. Hazarika, P. R. Narzary, M. Saikia, H. Saikia, Shilpa Saikia, A. Rajkhowa, B. Kashyap, A. A. Sangma, S.Saikia, S.D. Borah, R.R. Saikia
Journal of Advances in Biology & Biotechnology · pp. 203–208 · Published 23 Sep 2024
10.9734/jabb/2024/v27i101444Abstract
This study evaluated the impact of methionine and tryptophan supplementation on the silk gland weight and Silk Gland Tissue Somatic Index (SGTSI) of eri silkworm, Samia ricini Donovan, a key species in vanya silk production. Freshly collected castor leaves were fortified with methionine and tryptophan solutions at various concentrations and fed to silkworm larvae from the third instar until maturity. The treatments significantly enhanced silk gland weight and SGTSI compared to the control. The highest silk gland weight (1.52g) and SGTSI (25.16%) were observed in larvae fed with tryptophan at 500 ppm (T6), followed by methionine at 500 ppm (T3) with 1.47g and 24.61%, respectively. Control larvae exhibited the lowest values (1.07g and 19.43%). Combination treatments of methionine and tryptophan showed less improvement compared to individual treatments. These findings suggest that dietary supplementation with specific amino acids could enhance silk gland development and silk production.
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