Electronic Theses and Dissertation

Ikan gabus adalah jenis ikan asli perairan Indonesia dengan wilayah persebaran
yang hampir merata di seluruh Indonesia dan bernilai ekonomis tinggi. Probiotik
merupakan mikroorganisme hidup yang bermanfaat bagi inang dengan
menyeimbangkan mikroflora dalam saluran pencernaan, meningkatkan efisiensi
pemanfaatan pakan, dan memperkuat respons imun. Hingga saat ini belum ada
penelitian terkait aplikasi probiotik Lactobacillus acidophilus pada ikan gabus
(Channa striata). Penelitian ini bertujuan meneliti dampak penggunaan probiotik
Lactobacillus acidophilus terhadap panjang, berat ikan gabus, dan menentukan
perlakuan terbaik dalam pemberian probiotik ini. Penelitian dilakukan dengan metode
eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 6 perlakuan
dan 3 kali ulangan. Perlakuan yang diberikan adalah pemberian probiotik
Lactobacillus acidophilus dari pengenceran berbeda sebanyak 30% dari berat pakan,
yaitu: P1: tanpa probiotik (kontrol), P2: pakan pelet + 30% bakteri 10⁻³ CFU/ml, P3:
pakan pelet + 30% bakteri 10⁻⁵ CFU/ml, P4: pakan pelet + 30% bakteri 10⁻⁷ CFU/ml,
P5: pakan pelet + 30% bakteri 10⁻⁹ CFU/ml, P6: pakan pelet + 30% bakteri 10⁻¹²
CFU/ml. Parameter penelitian meliputi berat mutlak, panjang mutlak, laju
pertumbuhan spesifik (LPS), rasio konversi pakan (FCR), efisiensi pemanfaatan pakan
(EPP), dan survival rate (SR). Hasil uji ANOVA menunjukkan perlakuan pemberian
probiotik Lactobacillus acidophilus berpengaruh nyata (p

Snakehead fish is a native fish species of Indonesian waters with a distribution almost evenly spread throughout Indonesia, and it has high economic value. Probiotics are live microorganisms that benefit the host by balancing the microflora in the digestive tract, increasing feed utilization efficiency, and enhancing the immune response. To date, there has been no research related to the application of the probiotic Lactobacillus acidophilus on snakehead fish (Channa striata). This study aims to investigate the impact of using Lactobacillus acidophilus probiotics on the length and weight of snakehead fish and determine the best treatment for administering this probiotic. The research was conducted using an experimental method with a Completely Randomized Design (CRD) consisting of 6 treatments and 3 replications. The treatments were the administration of Lactobacillus acidophilus probiotic bacteria from different dilutions, amounting to 30% of the feed weight, namely: P1: without probiotics (control), P2: pellet feed + 30% bacteria 10⁻³ CFU/ml, P3: pellet feed + 30% bacteria 10⁻⁵ CFU/ml, P4: pellet feed + 30% bacteria 10⁻⁷ CFU/ml, P5: pellet feed + 30% bacteria 10⁻⁹ CFU/ml, P6: pellet feed + 30% bacteria 10⁻¹² CFU/ml. Research parameters included absolute weight, absolute length, specific growth rate (SGR), Feed Conversion Ratio (FCR), feed utilization efficiency (FUE), and survival rate (SR). The ANOVA test results showed that the different treatments of Lactobacillus acidophilus probiotics had a significant effect (p