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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2 Documents
 1 
Search results for , issue " Vol 13, No 3 (2014)" : 2 Documents clear
APLIKASI VAKSIN Streptococcus agalactiae UNTUK PENCEGAHAN PENYAKIT STREPTOCOCCOSIS PADA BUDIDAYA IKAN NILA (Oreochromis niloticus) [Application of Streptococcus agalactiae vaccine to prevent streptococcosis on tilapia culture, Oreochromis niloticus] Taukhid, Taukhid; Lusiastuti, Angela Mariana; Sumiati, Tuti
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.857 KB) | DOI: 10.14203/beritabiologi.v13i3.662

Abstract

The research with the aim to know the effectivity (yield gap) of the application of Streptococcus agalactiae vaccine (pure whole cell) in prevention of streptococcosis on tilapia (Oreochromis niloticus) culture has been carried out. The isolate of S.agalactiae – N14G was used as a master seed on vaccine production. Priming vaccination was administered by immersion method, and booster vaccination was taken th place two months latter by oral method. Challenge test at the lethal dose (LD50) against active bacteria was done at 14 days post booster vaccination, and observation was taken place for 14 days post artificial infection. The results of the research showed that the highest survival rate and relative percent survival (RPS) was found in group treated with Streptovac vaccine (S. agalactiae and A. hydrophila combination) (65.58% and 35.36%) followed by S. agalactiae vaccine (52.08% and 10.01%). The lowest survival rate was found in control group (46.75%). The result of confirmation effectivity of the vaccines by challenge test in the laboratory showed that the highest survival rate and relative percent survival (RPS) was found in S. agalactiae vaccine (50.00% dan 37.50%) followed by Streptovac vaccine (40.00% and 25.00%), and the lowest survival rate was found in control group (20.00%). Vaccination is better than the non vaccinated.
GONADAL DEVELOPMENT AND SPAWNING FREQUENCY OF TILAPIA (Oreochromis niloticus) THAT FEEDED BY VITAMIN E SUPPLEMENTATION [Perkembangan Gonad dan Performa Pemijahan Induk Ikan Nila (Oreochromis Niloticus) yang diberi Pakan dengan Penambahan Vitamin E Suplementasi] Pamungkas, Wahyu; Tahapari, Evi; Darmawan, Jadmiko
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (109.884 KB) | DOI: 10.14203/beritabiologi.v13i3.661

Abstract

Vitamin E merupakan salah satu mikronutrien penting yang berpengaruh terhadap performa reproduksi ikan. Penelitian penambahan vitamin E dalam pakan induk ikan nila (Oreochromis niloticus) bertujuan untuk mengetahui pengaruh vitamin E terhadap perkembangan gonad dan performa pemijahan induk ikan nila. Pakan uji yang digunakan adalah pakan formula dengan kadar protein 35% dan lemak 10% ditambahkan vitamin E (tingkat kemurnian 50%) dengan dosis A) 0, B) 75, C) 150, D) 225, E) 300 and F) 375 mg/kg pakan (kontrol). Induk ikan nila umur 6-7 bulan sebanyak 180 ekor dipelihara dalam 6 jaring ukuran 3x3x1,5m yang diletakkan dalam kolam 6000 m2 dengan kedalaman air 80 cm. Masing-masing jaring diisi dengan 20 ekor induk betina dan 10 ekor induk jantan dan dipelihara selama 13 minggu pada bulan September sampai dengan November 2011. Hasil penelitian menunjukkan bahwa penambahan vitamin E pada pakan induk ikan nila memberikan nilai indeks gonad somatik lebih tinggi dibandingkan yang kontrol. Penambahan vitamin E sebanyak 225 mg/kg pakan memberikan nilai persentase induk matang gonad yang tertinggi (80%) dan frekuensi pemijahan yang terbanyak yaitu 22 kali selama masa pemeliharaan 13 minggu. Berdasarkan hasil penelitian yang diperoleh dapat disimpulkan bahwa penambahan vitamin E sebanyak 225 mg/kg pakan dapat meningkatkan perkembangan gonad, jumlah induk betina yang matang gonad, persentase total pemijahan dan frekuensi pemijahan pada induk ikan nila.

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