Impact of Antibiotic on Productivity and Parameters of Silkworm, Bombyx mori L.

The observation data in this study refer to improve in parameters of silkworm, Bombyx mori L. Three concentrations (0.1, 0.2, and 0.3 mg/ml of distilled water) of delzosin antibiotic tested on silkworm Bombyx mori parameters. Larval mortality rates were 34.66, 30.00, 26.66 and 35.00 % for 0.1, 0.2, 0.3 mg/ml and control respectively. Durations of larvae were 37.40 day for 0.1 mg/ml, 35.50 day for 0.2 mg/ml, 34.4 day for 0.3 mg/ml and 37.50 day for control. Cocooning percentage in the present study were 93.03%, 93.82%, 95.02% and 91.99 % for 0.1 mg/ml, 0.2 mg/ml, 0.3 mg/ml and control respectively. Cocoons weights were 1.024, 1.090, and 1.165, 1.000g for 0.1, 0.2, 0.3% and control respectively. Cocoons shell weight ranged between 0.169g for control and 0.231g for 0.3 mg/ml concentration of antibiotic. Cocoon shell ratio ranged from 16.90 to 19.82 % for control and 0.3 mg/ml of antibiotic concentration, respectively. Effective rate of rearing in the present study were 80.00, 82.00, 85.00, 77.00%for for 0.1, 0.2, 0.3% and control respectively. Silk productivity ranged from 1.75 to 2.39 (cg/day) for control and 0.3 mg/ml concentration of antibiotic, respectively. Absolute silk yield ranged between 13.01 and 19.63g for control and 0.3 mg/ml concentration of antibiotic, respectively.