Comparative assessment of growth and performance of bivoltine silkworm races fed on mulberry (Morus alba) against biological and commercial parameters of Bombyx mori Linn.

Abstract

Silkworm (Bombyx mori L.) is basically monophagous insect feeds solely on mulberry leaves (morus spp.). Sericulture performs a pivotal function in economic improvement of the use with the aid of producing employment, profits, in addition to foreign exchange. For performance observe 5 mulberry silkworm races/hybrids have been evaluated at silkworm rearing at sericulture laboratory, 4 are Bivoltine and one race became multivoltine. For Bivoltine race eggs had been treated with 3% HCl for acid remedy of 1:3 ratios to break the diapauses degree. The goal of the have a look at become to examine larval period, quantity of larva left after each moulting, cocoon, pupa and shell weight and shell to cocoon ratio some of the 4 mulberry silk worm Bivoltine races. whilst evaluating the imply weight of 20 cocoon some of the silk bug races the biggest become 32.5gm (natural Mysore) and the bottom was 27.5gm (NB18 Bivoltine races). And the most important suggest weight of 20 shells and 20 shell ratio determined was 15.40 gm (natural Mysore), the lowest changed into 12.80 gm (NB18 races). For each weight of 20 cocoons and 20 pupa yellow silk worms race become considerably difference a number of the relaxation silk computer virus races. For 20 shells weight of yellow silk worm race was extensively difference the various relaxation silk worm races and there is also importance difference among NB4D2, NB18, KA and NB7 silk worm races. A silkworm race of five variety silkworm eggs is the spine of silk enterprise. Wholesome egg production is certainly the primary needful for conductive growth of entire silk enterprise. Timely supply of advanced pleasant of silkworm egg races can be maintaining sericulture as an industrial crop in opposition with different coins vegetation. There is also significance of hatchability (p