The current study was carried out to record the influence of mulberry leaves enriched with spirulina at different concentrations viz., 600, 800 and 1000 ppm on aminotransferase enzymes and economic traits of silkworm hybrid FC1×FC2. The larvae supplemented with spirulina at 1000ppm registered maximum aspartate and alanine aminotransferase activity levels in the fat body and midgut tissues over control batch. Further, larvae treated with higher concentration (1000ppm) of spirulina exerted increase in larval weight, cocoon weight, shell weight, shell ratio, filament length, filament weight and raw silk percentage when compared to other two concentrations. However, both enzyme activities were maximum during 5th instar 6th day old larvae but it was minimum in 1st day old larvae.

Bombyx mori, Spirulina, Aminotransferase enzymes, Economic traits

The larvae reared on mulberry leaves fortified with spirulina significantly improves both biomolecules and economic traits of silkworm. The elevated levels of alanine and aspartate aminotransferase activities were observed in treated batches which indicate enhanced amino acid metabolism. Among the tested concentrations, 1000 ppm consistently registered maximum enzyme activities as well as economic traits.

Thippeswamy L., M. N. Anil Kumar, Sudeepthi S., Kiran Kumar D. and Tejashwini G. (2025). The Variation in Aminotransferase Activities and Economic Traits in Silkworm as Influenced by Mulberry Leaf Enriched with Spirulina. Biological Forum, 17(9): 83-88.