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Bulgarian Jurnal of Animal Husbandry   ISSN 0514-7441
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Selection of Silkworm Breeds without Pigmentation of the Egg Serosa Shell I. Biological Characters
Panomir Tzenov, Jolanda Vasileva
Abstract: At the Scientific Center on Sericulture, Vratsa a study on selection of silkworm breeds without any pigmentation of the egg serosa shell, which may be further used for highly productive sex-limited for egg color silkworm breeds creation has been conducted during the period 2011–2018. As a result of the breeding work conducted two highly productive breeds without any pigmentation of the egg serosa shell, but manifesting high biological characters values – Milena 1 of the Japanese type and Milena 2 of the Chinese type were created. The two newly created silkworm breeds displayed a productivity, not lower than the ordinary highly productive silkworm breeds having colored egg serosa.
Keywords: Bombyx mori L.; breeding; color; egg; serosa; silkworm
Date published: 2019-06-26
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