Food Consumption and Utilization Efficiency in Samia ricini Donovan Reared on Ricinus communis, lin. Leaves Supplemented with Cyanobacteria = Food Consumption and Utilization Efficiency in Samia ricini Donovan Reared on Ricinus communis, lin. Leaves Supplemented with Cyanobacteria

다국어 초록 (Multilingual Abstract)

Food consumption and conversion efficiency of eri silkworm Samia ricini Donovan were studied during 4th and 5th larval instars by feeding castor leaves fortified with 100, 200, 300, 400 and 500 ppm concentrations of aqueous extracts of cyanobacteria Anabaena variabilis. The nutritional indices viz., ingesta, digesta, approximate digestibility (%), reference ratio and efficiency parameters like ECI and ECD were recorded which were significantly high at 400ppm concentration treated batches of 4th in star larvae over control batches. The decline in nutritional efficiency parameters of 5th in star treated larvae might be due to higher utilization of the digested food for metabolic activities. Significant difference of ECI to cocoon % and nonsignificantdifference of ECD to cocoon% and shell were observed between the treatmentsand control. Cyanabacteria feed supplement contains antibiotic and nutritions factors whichhas reflective effect on the biological parameters in eri silkworm and therefore has greaterapplication in commercial eri silkworm rearing.

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