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Jingyou (R Jingsong) is an artificial-feed-adapted silkworm variety developed through hybridization and backcrossing between Chinese-line, broad-feeding strains and Jingsong A, followed by selective breeding under artificial-feed rearing conditions. It belongs to the Chinese strain group, exhibits diapause, and has four instars.
The young larvae are dark brown, highly mobile, and exhibit uniform dormancy and arousal; their body color is pale bluish-white with widespread speckling. Larvae at all instars feed vigorously, enter dormancy relatively quickly, develop uniformly, and maintain a well-proportioned body shape. Mature mulberry leaves should be used to ensure that the silkworms are fully fed on high-quality foliage.
Huakang No. 3 is a new spring–rearing, high–silk–yield variety developed by the Sericulture Research Institute of the Chinese Academy of Agricultural Sciences through crossbreeding Jingsong and Haoyue as maternal parents and introgressing genes that confer strong resistance to Bombyx mori nucleopolyhedrovirus (BmNPV).
Liangguang No. 2 is a summer–autumn silkworm strain with multiple hybrid origins; it exhibits uniform hatching, with dark brownish-black first-instar larvae and distinct white spots on mature larvae. It demonstrates good tolerance to high temperatures and high humidity, is not particularly demanding in terms of mulberry leaf quality, and can withstand coarse feeding.
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Shandong Guangtong silkworm eggs Co., Ltd
Shandong Guangtong silkworm Eggs Co.,Ltd is a specialized group company devoted to the research,development, production and management of sericulture .We produce parent eggs of silkworm, F1 hybrid, double cocoons, cut cocoons, floss silk , raw silk, silk waste, mulberry saplings, pupa gender discriminator, automatic cocoon cutting machine,etc.
The company has strong technical strength, advanced production equipment, leading variety research and development, is now the world's largest silkworm production plant.
Currently, there are more than 300 full-time sericulture and breeding practitioners, including 50 senior professional technicians and 100 intermediate professional technicians.
Shandong Guangtong silkworm eggs Co., Ltd
Shandong Guangtong silkworm Eggs Co.,Ltd is a specialized group company devoted to the research,development, production and management of sericulture .We produce parent eggs of silkworm, F1 hybrid, double cocoons, cut cocoons, floss silk , raw silk, silk waste, mulberry saplings, pupa gender discriminator, automatic cocoon cutting machine,etc.
The company has strong technical strength, advanced production equipment, leading variety research and development, is now the world's largest silkworm production plant.
Currently, there are more than 300 full-time sericulture and breeding practitioners, including 50 senior professional technicians and 100 intermediate professional technicians.
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2026
01-04
2026
Shandong Guangtong Silkworm eggs Co., Ltd.
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