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All Journal Zuriat BERITA BIOLOGI Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Indonesian Aquaculture Journal
Rudhy Gustiano
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science

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Journal : Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal

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Reproductive Characteristics and Induced Breeding in Heterobranchus longifilis Jojo Subagja; Rudhy Gustiano
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 22, No 3 (2005)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2005.22.3.180

Abstract

Two experiments were conducted in the IRD-Gamet Laboratory, Montpellier, France. The first was to evaluate the recovery of Heterobranchus longifilis female gonad after induced ovulation, under tropical condition. Oocyte diameter was used as indicator of the recovery rate following by induced breeding, hatching rate and abnormality of larvae. The results showed that the recovery was about 28 to 35 days after ovulation. The second was carried out to improve the milt production by hormone treatments. Volume of intratesticular sperm and the number of spermatozoa were observed. The results indicated that the treatmens did not prove any significant difference.
Evaluasi Pertumbuhan Empat Populasi Ikan Nila (Oreochromis niloticus) di Kolam Percobaan Cijeruk, Bogor Rudhy Gustiano; Titin Kurniasih; Otong Zenal Arifin
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 22, No 3 (2005)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2005.22.3.177

Abstract

The objective of the present study was to obtain good populations of Oreochromis niloticus based on their growth performances. Four populations, i.e GIFT-6, Tempe, Local, and GIFT-3 were used in this study. Sixteen 16 cages laid in four earthen ponds in the Cijeruk Research Installation, Bogor, were used as replication. The results showed that there were no significant difference among four populations for biomass, but a significant difference among populations was observed on length parameter (F < 0.01),in which the local population was the best.
Co-Authors Byung Hwa Min Byung Hwa Min Fera Permata Putri Irin Iriana Kusmini Jojo Subagja Ki Tae Kim Ki Tae Kim Laurent Pouyaud MH. Fariduddin Ath-thar Otong Zenal Arifin Titin Kurniasih Vitas Atmadi Prakoso Vitas Atmadi Prakoso Vitas Atmadi Prakoso Young Jin Chang Young Jin Chang