The Effect of Leaf-Waste Type and Bioconversion Ability Based on Feed Conversion Ratio in Black Soldiers Fly Larvae (Hermetia illucens, L.)

The Black Soldiers Fly (Hermetia illucens) life cycle is unique. The uniqueness lies in the life of the larvae until the pupae and metamorphosis become relatively clean flies, do not like smelly media and tend to be in a moist to dry medium. Unlike some other types of flies, the BSF life cycle brings more advantages than disadvantages. There are various problems related to the ability of BSF larvae to decompose organic waste. An investigation was needed to determine the ability of leaf waste decomposition in the environment which is quite abundant and its potential has not been calculated. Four types of leaf waste that will be tested, namely categories A, B, C, D including A (Ketapang / Ficus Lyrata, FF), B (Markisa / Passion fruit / Passiflora edulis, FM), C (Kelengkeng / Longan / Dimocarpus longan, FK), D (Glodhogan pecut / Polyalthia longifolia, Sonn., FG). Meanwhile, E as control was an exclusive basic feed. The composition of the ratio of [medium: basic feed] BSF in each category A, B, C, and D as a medium for larval rearing, consists of: (80:20), (60:40), (50:50), (40:60) and (20:80) %. Each treatment had 4 replications. The place of maintenance is a plastic tub covered with a plastic net and the initial weight of the media composition is 500 grams. Each tub was maintained by larvae with an average weight of 20 grams/tub until they reached the pupal period. The basic feed was fermented soft bran. The parameters observed were: the bioconversion ability of BSF larvae based on the Feed Conversion Ratio (FCR). Data analysis using a completely randomized design with a nested design on 2 independent variables was carried out using SPSS version 19 software. The results showed that the type of leaf waste and the basic feed ratio had a very significant effect (P <0.01) on the ability of bioconversion based on the Feed Conversion Ratio (FCR) of BSF larvae, and the highest was in the treatment of Passion fruit waste with ratio 50: 50%.