Effect of Feeding Mix Mulberry Varieties on Growth and Development of C-21 Strain of Silkworm (Bombyx mori L.) and on their Cocoon Characters
Effect of Feeding Mix Mulberry Varieties on Growth and Development of C-21 Strain of Silkworm (Bombyx mori L.) and on their Cocoon Characters
Muhammad Salman1*, Naveed Ahmed2, Mir Manzar Ud Din3, Fazli Amin4 and Arsalan Ali5
ABSTRACT
The present study was carried out to observe and study the growth and developmental stages of mulberry silkworm (Bombyx mori L.) C-21 strain by feeding different mulberry varieties and its effect on their cocoon characters during spring and autumn silkworm rearing seasons 2022. The study comprised of thirty number of larvae and cocoons of Chinese C-21 strain. The parameters that were studied in the present experiment and recorded were weight of full-grown larvae (1.4-3.6 gm), length of larvae (49-67 mm), cocoon weight with floss (0.34-2.3 gm), cocoon weight without floss (0.32-1.76 gm), cocoon shell weight (0.16-0.83 gm), cocoon diameter (14-22 mm), cocoon length (27-34 mm), cocoon weight (0.512-1.184 gm), cocoon filament length (757-1123 m), filament wet weight (0.125-0.806 gm) and filament dry weight (0.191-0.288 gm). Four randomly selected cocoons were selected for the reeling process. The mean boiling temperature was recorded at 87°C. Temperature varies between 85°C and 90°C during the rearing season. The study shows that carefully controlling the temperature and humidity levels and managing the feeding of silkworms ensure the optimal growth and development resulting in healthy and productive silkworms.
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