Effect of cooperative house rearing and transportation on growth and economic cocoon characters of Bombyx mori L.
Effect of cooperative house rearing and transportation on growth and economic cocoon characters of Bombyx mori L.
Sardar M. Rafique and Ghulam Ali Bajwa
ABSTRACT
The influences of young age cooperative house rearing conditions (27-28oC, 80-90%, RH) and their transportation vis-a-vis conventional rearing method on silkworm growth and economic cocoon traits was assessed. Besides, different transportation modes and means were evaluated. The results revealed that the young age larvae of C-102 strain reared under cooperative house conditions and transported by motorbike gave 5.12% (larval body weight gain), 11.34% (cocoon weight) and 12.69% (shell weight) more than conventional methods of rearing. In case of 206-PO, return of larval body weight gain, cocoon and shell weight were 8.15%, 11.76% and 9.56% higher, respectively. Larvae transported in wax paper lost larval body weight by 4.24% (C-102) and 4.09% (206-PO) as compared to wooden rearing tray. Combination of motorbike and wooden rearing tray produced maximum larval body weight (3.23gl-1), cocoon weight (1.53g), shell weight (0.32) and cocoon shell ratio (22.32%) in C-102 while in 206-PO these entities have values of 3.371gl-1, 1.358g, 0.287g and 22.95% in the same combination. Based on present findings it is recommended that young age worms should be reared under cooperative house conditions and transported by motorbike-wooden rearing tray for better growth, cocoon production and consequently more economic returns.
Key words: Silkworm, Cooperative house rearing, Chawki, Transportation Modes, Growth, Cocoon characters
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March 2005
Vol. 55, Iss. 1
