Electronic Theses and Dissertation

ABSTRAK
Penelitian ini bertujuan untuk mengetahui pengaruh fermentasi air cucian biji kopi terhadap laju pertumbuhan Daphnia sp dan pengaruh perkembangan Daphnia sp yang diberikan fermentasi air cucian biji kopi. Penelitian dilaksanakan di Laboratorium Pembenihan dan Pembesaran Ikan, Fakultas Kelautan dan Perikanan, Universitas Syiah Kuala, Darussalam, Banda Aceh pada bulan Mei sampai Juni 2025. Rancangan penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 4 ulangan, yaitu Perlakuan 1 (P1) tanpa pemberian air fermentasi cucian biji kopi (kontrol), P2 (1,5 ml/L) P3 (3 ml/L), P4 (4,5 ml/L), P5 (6 ml/L). Parameter yang diamati meliputi populasi Daphnia sp, laju pertumbuhan Daphnia sp, dan laju mortalitas Daphnia sp. Hasil uji ANOVA menunjukkan bahwa pengaruh fermentasi limbah air cucian biji kopi Arabika terbukti memberikan pengaruh nyata terhadap laju pertumbuhan Daphnia sp. Laju pertumbuhan tertinggi diperoleh pada perlakuan P4 (4,5 ml/L), yaitu sebesar 6,11%. Pengaruh Fermentasi limbah air cucian biji kopi Arabika juga berpengaruh nyata terhadap perkembangan populasi Daphnia sp. Perlakuan P3 (3 ml/L) menghasilkan populasi tertinggi sebesar 3.400,00 ind/L, yang mengindikasikan bahwa dosis tersebut mampu menciptakan keseimbangan nutrisi yang optimal bagi proses reproduksi Daphnia sp.

Kata kunci: Daphnia sp, cucian biji kopi, fermentasi limbah.

ABSTRACT This study aims to determine the effect of coffee bean washing water fermentation on the growth rate of Daphnia sp and the effect of Daphnia sp development given coffee bean washing water fermentation. The study was conducted at the Fish Breeding and Rearing Laboratory, Faculty of Marine Affairs and Fisheries, Syiah Kuala University, Darussalam, Banda Aceh from May to June 2025. The study design used a Completely Randomized Design (CRD) with 5 treatments and 4 replications, namely Treatment 1 (P1) without giving coffee bean washing water fermentation (control), P2 (1.5 ml/L) P3 (3 ml/L), P4 (4.5 ml/L), P5 (6 ml/L). The parameters observed included the population of Daphnia sp, the growth rate of Daphnia sp, and the mortality rate of Daphnia sp. The results of the ANOVA test showed that the effect of Arabica coffee bean washing water fermentation was proven to have a significant effect on the growth rate of Daphnia sp. The highest growth rate was obtained in treatment P4 (4.5 ml/L), which was 6.11%. The effect of Arabica coffee bean washing wastewater fermentation also significantly affected the growth of Daphnia sp. Treatment P3 (3 ml/L) produced the highest population of 3,400 individuals/L, indicating that this dose creates an optimal nutritional balance for Daphnia sp. reproduction. Keywords: Daphnia sp., coffee bean washing, wastewater fermentation.