EVALUATION OF THE NUTRITIONAL CONTENT OF BIOSLURRY AS A FERTILIZER FOR SOME NATURAL FEED

Aquaculture

Natural food is the initial food for the life of cultivated fish, shrimp and shellfish larvae, because it has good nutritional content for seed growth. Natural feeds that are often used in fish farming are Artemia sp., Daphnia sp., Spirulina sp., Chlorella sp., Chaetocheros, Tertraselmis and Tubifex sp.. The advantage of natural feed is that it has a size that fits the mouth opening of the fish fry. The growth of natural feed requires nutrient content consisting of macro and micro nutrient content. Utilization of biogas waste produced from animal husbandry can be used as fertilizer for natural feed culture activities. The nutritional content contained in bioslurry is able to meet the needs of natural feed for its growth. The purpose of this study is to determine the benefits of bioslurry nutritional content that can be used in natural feed cultivation. The method used is the study of literature. The results obtained are that the application of bioslurry fertilizer in natural feed culture is proven to increase the productivity of cultivated natural feed. The use of bioslurry fertilizer in natural feed cultivation such as Chaetoceros gracilis, at a dose of 19 ml resulted in the highest density of 73 × 104, besides that the use of bioslurry in Daphnia sp. The optimal concentration obtained was 3.06 gr/L. Evaluation of the nutritional content of bioslurry in natural feed cultivation can be a recommendation for farmers to carry out natural feed cultivation by utilizing biogas waste, as well as the nutrient content contained in bioslurry that is suitable for the needs of natural feed cultivation.

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