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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 3
First page : (437) Last page : (444)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8139

Analysis of Boil off Loss in the Cocoon Shells of Bivoltine Breeds in Three Seasons

Anil Kumar M.N.*
Department of Studies in Sericulture science, University of Mysore, Mysuru-570006, Karnataka, India
*Corresponding Author E-mail: anilkumar2068@gmail.com
Received: 5.05.2020  |  Revised: 9.06.2020   |  Accepted: 13.06.2020 

 ABSTRACT

The mulberry silkworm, Bombyx mori L. is one of the productive insect exploited for silk of the commercial importance. The silk is animal based filament made up of two principle proteins viz., fibroin and sericin. The removal of sericin from the silk bave is known as boil- off loss ratio (B.O.R). It is considered as one of the special qualitative trait during the development of silkworm breeds. The current investigation has been undertaken to record cocoon and reeling parameter as well as boil-off ratio in bivoltine breeds viz., CSR2, CSR4, CSR6, CSR16, CSR17, CSR26, CSR27 and S8 in different seasons namely pre-monsoon, monsoon and post-monsoon. The results of the study inferred that, all the breeds performed better in respect of cocoon weight, shell weight, shell percentage, filament length, renditta and denier during monsoon season as compared to pre-monsoon and post-monsoon. Further, lower significant of boil-off loss ratio was registered by all the breeds during post-monsoon season. However, CSR2 recorded lowest value for this trait among breeds.

Keywords: Bombyx mori L., Bivoltine hybrids, Boil-off loss ratio, Seasons, Commercial traits

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Anil Kumar, M.N. (2020). Analysis of Boil off Loss in the Cocoon Shells of Bivoltine Breeds in Three Seasons, Ind. J. Pure App. Biosci. 8(3), 437-444. doi: http://dx.doi.org/10.18782/2582-2845.8139