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