PENGARUH PEMBERIAN PROBIOTIK Bacillus tropicus PCP1 TERHADAP DAYA TETAS TELUR DAN PERTUMBUHAN BENIH LELE MUTIARA (Clarias sp.)

Mahadma Aditama, Indah Istiqomah, S.Pi., MSi., Ph.D.

2025 | Skripsi | BUDIDAYA PERIKANAN

Penelitian ini bertujuan untuk mengevaluasi pengaruh pemberian probiotik

Bacillus tropicus PCP1 terhadap daya tetas telur, kelangsungan hidup, dan pertumbuhan

benih lele (Clarias gariepinus). Penelitian dilakukan secara eksperimental menggunakan

Rancangan Acak Lengkap (RAL) dengan empat perlakuan dosis (sel/ml) probiotik (0,

10², 10?, dan 10?) dalam tiga ulangan. Probiotik diberikan melalui air pemeliharaan pada

hari ke-1 sampai 14 kemudian dilanjutkan melalui pakan pada hari ke 14 sampai 30.

Parameter yang diamati meliputi hatching rate, survival rate larva dan fry, pertumbuhan

mutlak fry, serta laju pertumbuhan spesifik fry (SGR). Hasil penelitian menunjukkan

bahwa probiotik tidak berpengaruh signifikan terhadap hatching rate dan survival rate (p

> 0,05), Namun, pada dosis 10? sel/ml, B. tropicus secara signifikan meningkatkan

pertumbuhan mutlak dan SGR (p < 0>

3,13%/hari, SGR berat 7,31%/hari, dan pertambahan berat mutlak sebesar 0,369 g.

Kualitas air selama masa pemeliharaan berada dalam kisaran optimal. Berdasarkan hasil

tersebut, pemberian B. tropicus dapat direkomendasikan sebagai strategi alami dan

berkelanjutan untuk meningkatkan performa pertumbuhan benih ikan lele.

This study aimed to evaluate the effect of Bacillus tropicus PCP1 probiotic

supplementation on egg hatching rate, survival, and growth performance of catfish

(Clarias gariepinus) fry. The experiment was conducted using a Completely Randomized

Design (CRD) with four probiotic dose (cell/ml) treatments (0, 10², 10?, and 10? cells/ml),

each with three replications. The probiotic was administered through the rearing water

from day 1 to 14, followed by feed supplementation from day 14 to 30. Observed

parameters included hatching rate, larval and fry survival rate, absolute growth, and

specific growth rate (SGR) of the fry. The results showed that probiotic supplementation

had no significant effect on hatching and survival rates (p > 0.05). However, at a dose of

10? cells/ml, B. tropicus significantly enhanced absolute growth and SGR (p < 0>

a length SGR of 3.13%/day, weight SGR of 7.31%/day, and absolute weight gain of 0.369

g. Water quality remained within the optimal range throughout the rearing period. Based

on these findings, supplementation of B. tropicus at the highest dose can be recommended

as a natural and sustainable strategy to improve the growth performance of catfish fry.

Kata Kunci : Bacillus tropicus , daya tetas, ikan lele, pertumbuhan, probiotik