EFFECT OF CHLOROMYCETIN AND GLYCINE ON THE GROWTH AND PRODUCTION OF SILK BY BOMBYX MORI L.

Abstract

Two batches of silkworms, one in the IV instar and the other in the V.have been fed on alternate days with various concentrations of chloromyeetin and the minimum quantity of the antibiotic required to produce the maximum beneficial effect has been determined to be of the order of 50-60 mg./kg. body weight of the larva. Simultaneous supplementation of chloromycetin and glycine hus been shown to possess the distinct advantage of reducing the quantities of the two substances to half the concentrations previtusly employed to produce the desired effects. It has also been indicated that the administration of chloromycetin to the larva: twice on alternate days is not as ctfective as supplementing the antibiotic once daily along with glycine.