Electronic Theses and Dissertation

Pakan merupakan salah satu komponen penting yang mempengaruhi pertumbuhan udang windu. Penambahan probiotik dalam pakan dapat mengurai kandungan kompleks menjadi lebih sederhana sehingga lebih mudah diserap oleh tubuh udang. Penelitian ini bertujuan untuk mengetahui pengaruh bakteri probiotik Streptococcus thermophilus dan Bacillus coagulans terhadap usus dan lambung serta pertumbuhan udang windu (Penaeus monodon). Metode percobaan Rancangan Acak Lengkap (RAL) dengan metode enam perlakuan dan tiga kali ulangan yakni, A (tanpa penambahan probiotik), B (Streptococcus thermophilus 100%), C (Bacillus coagulans 100%), D (Streptococcus thermophilus 50% dan Bacillus coagulans 50%), E (Streptococcus thermophilus 75% dan Bacillus coagulans 25%), F (Streptococcus thermophilus 25% dan Bacillus coagulans 75%). Hasil penelitian menunjukan adanya pengaruh nyata antar perlakuan seperti hasil pertumbuhan terbaik diperoleh pada perlakuan C (Bacillus coagulans 100%) dengan pertumbuhan panjang mutlak 2,86 cm, berat mutlak 0,75 g, Laju Pertumbuhan spesifik 6,1%, rasio konversi pakan 1,04, efisiensi pakan 95,9, kelangsungan hidup 90,0% dan frekuensi molting 4,3 kali/ekor. Sehingga, dapat disimpulkan bahwa dengan mengabungkan kedua probiotik Bacillus coagulans dan Streptococcus thermophilus tidak berpengaruh nyata terhadap pertumbuhan udang windu. Namun, penggunaan probiotik Bacillus coagulans 100% pada perlakuan C dapat meningkatkan pertumbuhan udang windu.

Feed is one of the important components that affect tiger shrimp growth. The addition of probiotics in feed can break down the complex content into simpler so that it is more easily absorbed by the shrimp body. This research to determine the effect of probiotic bacteria Streptococcus thermophilus and Bacillus coagulans on the intestines and stomach and the growth of tiger prawns (Penaeus monodon). The experimental method was a Completely Randomized Design (CRD) with six treatments and three replications, namely, A (without the addition of probiotics), B (Streptococcus thermophilus 100%), C (Bacillus coagulans 100%), D (Streptococcus thermophilus 50% and Bacillus coagulans 50%), E (Streptococcus thermophilus 75% and Bacillus coagulans 25%), F (Streptococcus thermophilus 25% and Bacillus coagulans 75%). The results showed a significant effect between treatments such as the height of the shrimp intestinal villi and the growth of tiger shrimp, the best treatment was in treatment F (probiotic bacteria Streptococcus thermophilus 25% and Bacillus coagulans 75%) The best growth results were obtained in treatment C (Bacillus coagulans 100%) with absolute length growth of 2.86 cm, absolute weight of 0.75 g, specific growth rate of 6.1 %, feed conversion ratio of 1.04, feed efficiency of 95.9 %, survival rate 90,0 % and molting frequency of 4.3 times/head. The conclutation are that by combining the two probiotics Bacillus coagulans and Streptococcus thermophilus it can increase the growth of tiger prawns in treatment C with the use of 100% Bacillus coagulans probiotics.