Aplikasi Probiotik Bacillus sp. Melalui Pakan Terhadap Pertumbuhan dan Kesehatan Benih Ikan Koi Cyprinus rubrofuscus
Date
2026Jenis/Type
Tugas AkhirSubtype
Undergraduate ThesesAuthor
ZAHRA, GHAIDA REFIANA
Wiyoto
Kusumanti, Ima
Metadata
Show full item recordAbstract
Ikan koi adalah ikan hias air tawar introduksi yang menjadi primadona di pasar internasional karena masuk ke dalam kelompok ikan hias mahal, dan fluktuasi di pasaran yang relatif stabil. Penelitian ini bertujuan mengevaluasi aplikasi probiotik Bacillus sp. melalui pakan terhadap sintasan dan pertumbuhan benih ikan koi. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan empat perlakuan, yaitu perlakuan kontrol tanpa pemberian probiotik Bacillus sp. (K), probiotik Bacillus sp. dosis 5 mL kg?¹ (PB5), probiotik Bacillus sp. dosis 10 mL kg?¹ (PB10), dan probiotik Bacillus sp. dosis 15 mL kg?¹ (PB15) selama 60 hari pemeliharaan. Hasil penelitian menunjukkan bahwa pemberian probiotik Bacillus sp. berpengaruh nyata (P<0,05) dalam meningkatkan pertumbuhan dan kesehatan, dengan hasil terbaik pada perlakuan PB15 yang menghasilkan sintasan 90,2%, pertumbuhan panjang mutlak 5,92 cm, pertumbuhan bobot mutlak 10 g, dan laju pertumbuhan spesifik 2,99 % hari-1, sel darah merah 2,19×106 sel mm-3, sel darah putih 1,7×105 sel mm-3, kadar hematokrit 36,66%, dan kadar hemoglobin 8,67g dL-1. Pemberian probiotik Bacillus sp. dosis 15 mL kg?¹ pakan meningkatkan performa pertumbuhan dan sintasan benih ikan koi. Koi are freshwater ornamental fish that have become a hit in the international
market because they're expensive and their prices stay pretty steady. This study
looked at the effects of Bacillus sp. probiotics in feed on the survival and growth
of koi fry. We used a Completely Randomized Design (CRD) with four
treatments: a control with no Bacillus sp. probiotic (K), Bacillus sp. at 5 mL Kg
-1
(PB5), 10 mL Kg
-1
(PB10), and 15 mL Kg
-1
(PB15) over 60 days. The results
showed that adding Bacillus sp. probiotics significantly (P<0.05) boosted growth
and health, with the best results in PB15, 90.2% survival, 5.92 cm absolute length
growth, 10 g absolute weight growth, 2.99% daily specific growth rate, and
2.19×106 red blood cells/mm³. white blood cells 1.7×105 cells mm-3, hematocrit
level 36.66%, and hemoglobin level 8.67 g dL-1
. Giving Bacillus sp. probiotics at
a dose of 15 mL Kg
-1
of feed improved the growth performance and survival of
koi fish fry.

