Use of Aqueous Solution of Eurhodin Treated Mulberry Leaves for the Qualitative Cocoons and Silk Filament in silkworm, Bombyx mori (L) Races: Bivoltine Cross Breed [(CSR6 x CSR26) x CSR2 x CSR27)] and multivoltine crossbreed [(PM x CSR2)]

Résumé

Nutrition is having prime role in sericulture. Nutrition reflects on the quality and quantity of silk yield. The Bombyx mori species of Silkworm is monophagous insect. It use to derive almost all the needful nutrients from the mulberry leaves (Nasreen et al., 1999). The quality and quantity of nutrients in mulberry leaves vary according to the variety mulberry and the quality of soil used for cultivation (Ito, 1978). The ingestion of nutrient by the larvae is supposed to be proportional to the food available. Legay (1958) considering the nutrition as most significant field of studies in sericulture. The studies in silkworm nutrition is an essential prerequisite. This is because, silkworm nutrition as acting as a steering for the journey of sericulture for proper commercial exploitation of the silk (Vitthalrao B. Khyade, et al, 2015; Vitthalrao B. Khyade, et al, 2015). Nutrition of silkworm is solitory factor in sericulture. Nutrition almost individually concerned with augumenting the quality and quantity of silk produced by larvae of silkworm (Laskar and Datta, 2000). The attempts on this line in recent years include: suplimentation of feed with nutrients such as proteins, carbohydrates, amino acids, vitamins hormones antibiotics etc. for better performance and to get high yield and quantity cocoons (Sannapa et al., 2002; Etebari et al., 2004). Various salts are reported for significant enhancement in the growth and development of silkworms. For example, nickel chloride has been reported for significant increase in the growth of silkworm larvae (Islam et al., 2004). In addition to mulberry leaves, feed supplements are also in practice. Most of the attempts are for availing silkworm for enhanced economic characteristics (Jeyapaul et al., 2003; Sheeba et al., 2006).

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