Sericin as a Nutritional Supplement to Enhance Cocoon, Pupal Parameters and Grainase Properties of Silkworm Bombyx mori L.

During the raw silk degumming process, water-soluble natural protein sericin is discarded as waste material in sericulture industry of Bangladesh. In this study, various amount (as nutritional supplement) treated mulberry leaves was fed to three different silkworm groups and its effect on cocoon, pupal parameters well grainase properties silkworms evaluated. The results indicated that fecundity increased with decrease concentration for all treatment groups. There no significant difference among control group value, but case hatching percentage (%), showed reverse trend fecundity. Cocoon production by 23.91% when 0.50% sericin-treated at chawki stage (first third instar) compared group.