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KMID : 1041219790210010046
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Journal of Sericultural and Entomological Science
1979 Volume.21 No. 1 p.46 ~ p.49
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Comparison of Economical Character of the Silkworm, Bombyx Mori L., Introduced from Foreign Sericultural Countries to Turkey
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Ryu Keun-Sup
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Abstract
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These experiments were made in order to compare the productivity of various varieties of Fsilkworm eggs imported from foreign sericultural countries with the productivity of some Fsilkworm eggs varieties produced by Turkey. The results are summarized as follows: 1. In the durations of whole instar, it lasted 30∼38 days under natural rearing conditions but Jam 107Jam 105 about 30 days. 2. Cocoon yield per case of silkworm eggs was shown significantly among the varieties. Thaiei Choan was the highest yield of cocoon, followed by Isonzo, Piave, M-198, MN, SP, JC and Jam 107Jam 108 in that order. 3. In the percentage of cocoon shell, M-197 was the highest and other varieties were almost on the same level of cocoon shell, but Jam 107 Jam 108 was the lowest percentage. 4. In the weight of a cocoon, ChoanThaiei was the heaviest, followed by SP, CJ, MN, M-197, Piave, Livenzo and Jam 107Jam 108 in that order. 5. In the raw silk percentage of fresh cocoon, ChoanThaiei, 3 Italian varieties and Turkish MN. CJ belonged to the first group of better raw silk percentage, followed Polish M-197 and Jam 1071am 108 in that order.
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