Cocoon Filament Quality of a Special Silkworm Variety, GoldenSilk

Abstract

The effect of cultivation season on the cocoon filament quality of authorized silkworm variety, GoldenSilk was examined with cocoon filament character, reeling char-acter, and fiber character during 3 years. In cocoon fil-ament character, filament length of spring and autumn cocoon was 979 and 879 m, respectively. Cocoon fila-ment weight of spring and autumn cocoon was 33.1 and 26.5 cg, which is lower than that of general bivoltine strain, BaeGokJam. Raw silk percentage of spring and autumn cocoon was 15.65 and 13.77%, respectively. In reeling character, reelability showed similar trend regardless of cultivation season and strain. However, the length and weight of non-broken filament of spring sea-son were slightly higher than those of autumn cocoon. Cultivation season did not affect on the fiber charac-teristics such as clearness and neatness, lousiness, and degumming loss. In cocoon character, filament length, size, and weight, spring cocoon filament showed higher value than autumn cocoon, but lower than authorized general silkworm varieties. In reeling characteristics, non-broken length and weight showed the similar trends with the cocoon filament character. However, the reelability of GoldenSilk cocoon was not affected by cul-tivation season. The reelability of GoldenSilk cocoon was also similar with that of authorized general one. Fiber character including clearness and neatness, lous-iness, and degumming loss was also similar regardless of the rearing season and different strain