The Effect of Addition of Various Media Substrates of Local Microorganisms (MOL) to Nutrient Content and Cyanide Acid Level Anaerobic Fermentation of Cassava Peels (Manihot utilissima)

Abstract

ABSTRAK  Keterbatasan hijauan pakan menyebabkan perlunya pakan alternatif untuk memenuhi kebutuhan ternak, salah satu pakan alternatif yang dapat digunakan adalah kulit singkong terfermentasi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan berbagai media substrat mikroorganisme lokal (MOL) terhadap kandungan nutrien dan asam sianida fermentasi anaerobik kulit singkong. Penelitian dilaksanakan pada bulan September-Desember 2022 di Laboratorium Fakultas Pertanian Universitas Tidar, Laboratorium CV. Chemmix, Bantul, Yogyakarta, dan di Laboratorium Institut Pertanian Bogor. Penelitian menggunakan metode rancangan acak lengkap. Kulit singkong diberi 4 perlakuan dan 5 ulangan, yang terdiri dari (P0) kulit singkong + 1% Effective micro-organism EM4 1%; (P1) kulit singkong + 1% MOL1; (P2) kulit singkong + 1% MOL2; (P3) kulit singkong + MOL3; dan (P4) kulit singkong + MOL4. Data dari hasil penelitian dianalisis menggunakan analisis ragam, jika hasilnya berbeda nyata dilanjutkan menggunakan uji Dunnet. Hasil penelitian menunjukkan bahwa penambahan berbagai MOL memberikan pengaruh nyata (P<0,05) terhadap kandungan protein kasar dan HCN, namun tidak memberikan pengaruh (P>0,05) terhadap kadar air dan abu pada fermentasi kulit singkong.   Kata Kunci: Kulit singkong, air cucian beras, air rebusan kedelai, air limbah ampas tahu   ABSTRACT Limited forage causes the need for alternative feed to meet the needs of livestock, one of the alternative feeds that can be used is fermented cassava peels. This study aimed to determine the effect of adding various media substrates of local microorganisms (MOL) on the nutrient and cyanide acid content of cassava peels anaerobic fermentation. The research was conducted in September-December 2022 at the Laboratory of the Faculty of Agriculture, Tidar University, CV. Chemmix Laboratory, Bantul, Yogyakarta, Bogor Agricultural Institute Laboratory. The study used a completely Randomize Method. Cassava peels were given 4 treatments and 5 replications, namely (P0) cassava peels + 1% EM4; (P1) cassava peels + 1% MOL1; (P2) cassava peels + 1% MOL 2; (P3) cassava peels + 1% MOL3. Data were analyzed using a Completely Randomized Design (CRD) and continued with the Dunnet test. The results showed that the addition of MOL had a significant effect (P<0.05) on crude protein content and HCN content but had no significant effect (P>0.05) on water content and ash content in the anaerobic fermentation of cassava peels.  Keywords: Cassava peels, rice-washing water, soybean-boiled water, tofu wastewater