The feeding efficiency of grain bran for the Hermetia illucens larvae

¹ Research Institute of Fisheries, Yangiyul province, Tashkent region, Uzbekistan
² National University of Uzbekistan named after M. Ulugbek, Tashkent, Uzbekistan
³ Department of Histology and Medical biology of Tashkent Medical Academy, Tashkent, Uzbekistan
⁴ Uzbekistan - Finland Pedagogical Institute, Samarkand, Uzbekistan

^* Corresponding author: E-ginatullina@yandex.ru

Abstract

In the paper is presented the result of one experimental study on the growing of the black soldier fly Hermetia Illucens (Diptera: Stratiomyidae) on wheat and rice bran (from 7 days old to the prepupal stage of larvae). Feeding ration was given for larvae every four days in the following amounts: 45, 90 and 120 mg/larvae/day. For each experimental group (100 larvae, n=3) was calculated the indices related to its growth, mortality and feeding efficiency of wheat and rice brans. In general, the results of study showed a trend, in which larger ration of wheat and rice brans contributed to higher biomass and faster growth of the H. Illucens larvae. However, for wheat bran feed the diet 90 mg/l/d was the optimal and met both conditions: the nutrient requirement to gain of a big larvae biomass and provide a high degree of fed substrate degradation. The protein content of the prepupals in this experimental study was consisted from 36-43% and confirmed the opportunity to usage of dry prepupa meal in the aquaculture feed industry.