author(s)
Manu HN, Prashanth J, Chaitra S and Jagadeeshkumar TS

abstract
The ingesta and digesta of the silkworm hybrids treated with different doses of cholesterol during 5^th instar was evaluated, the maximum ingesta was recorded in FC₁ X FC₂ than FC₄ X FC₃ hybrid whereas, the digesta also showed a same trend as observed in ingesta, however the comparative evaluation of the digesta were found to be noticed always half of the ingesta. The efficiency of conversion of food ingested, efficiency of conversion of food digested and approximate digestibility enhances above the level of 50% the day1 of the 5^th instar till the day of spinning FC₄ X FC₃ hybrid, whereas the FC₁ X FC₂ hybrid exhibits the magnitude of changes not more than level of 50% throughout the 5^th instar larval periods. The consumption index, growth rate and co-efficient of metabolism of the silkworm hybrid treated with cholesterol during 5^th instar but the ratio falls within the range of 0-2 in all the concentration of cholesterol but on 7^th day, the consumption index exceeds the ratio upto 9 at 0.1M concentration of cholesterol treatment.