Application of Arginine, Histidine and Their Mixture on Economic Traits of the Silkworm, Bombyx Mori

Oral supplementation with 50, 100 and 150 μg/ml arginine to the silkworm larvae resulted in a significant increase in the larval weight, silkgland weight in only 150 μg/ml, cocooning percentage in all the fed groups, female cocoon weight, cocoon shell weight, cocoon shell ratio, male cocoon weight, cocoon shell weight and shell ratio is increased in all the treated groups, filament length were significantly increased in all the treated groups and denier is increased in only 150 μg/ml treated group. The moth emergence percentage, fecundity and hatching percentage were significantly increased in all the treated groups, number of eggs per ovariole and length of the ovariole were significantly increased in all the treated groups. The dietary supplementation with 50, 100 and 150 μg/ml histidine resulted in a significant increase in larval weight, silkgland weight and survival rate in all the treated groups, female cocoon weight was increased, but cocoon shell weight only in 150 μg/ml fed groups, female cocoon shell ratio also increased in all the fed groups, male cocoon weight and shell weight and shell ratio was increased in all the treated groups, filament length and weight and denier were significantly increased in all the treated groups. The moth emergence percentage, fecundity, hatching percentage and length of the ovariole, number of eggs per ovariole were significantly increased in all the fed groups. The oral supplementation with 100 and 150 μg/ml mixture of arginine and histidine to the silkworm larvae resulted in a significant increase in the larval weight, silkgland weight, survival rate, cocoon weight, shell weight and it’s ratio, male cocoon weight, cocoon shell weight and shell ratio were increased in all the fed groups, but filament length was increased only in 100 and 150 μg/ml treated groups, but weight and denier were significantly increased in all the treated groups. The moth emergence percentage, hatching percentage and fecundity number of eggs per ovariole and length of the ovariole were significantly increased in all the treated groups.