Judul: Diversity of Tilapia Oreochromis niloticus fry with Twice Sorting
Abstrak: Tilapia Oreochromis niloticus is one of the important, especially freshwater, aquaculture commodity in Indonesia. The main obstacle in developing tilapia culture in Indonesia is the insufficient amount of tilapia fry. The problem lies on the quality of the produced fry. Fry quality includes genetic factor, precise harvest time, and precise size (equality of size). Generally speaking, the more fry having equal size the better their qualities are. This research aimed to observe the diversity of standard length (body length) and weight of tilapia fry with twice sorting. This research is divided into three cases, 1 control, and cumulative of all cases. Observed parameters are survival rate, standard length, weight, and the diversity of standard length and weight of tilapia fry. Sorting was carried out at the first and second month and cumulative can increase the average standard length and decrease the variance. Average standard length and diversity increased again on the next month. After three months rearing, standard deviation and CV of weight on control is relatively higher than fry population on all cases and cumulative.
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Judul: Keragaan ikan nila BEST Oreochromis niloticus hasil seleksi di karamba jaring apung Danau Lido, Bogor
Abstrak: The strain BEST (Bogor Enhanced Strain Tilapia) is a new strain of tilapia developed from the sixth generation of GIFT (Genetic Improvement of Farmed Tilapia). Genetic environmental test of BEST has been done in various environment, one of them is in Lido lake. The objective of this research is to evaluate some commercial parameters (growth, SR, etc.) 9 families of BEST in experimental floating net cages. This research was conducted using 27 days-old fry, feeding with 10% of biomass daily for 60 days. Every family reared in floating net cage with density of 60 fish/m3. Observation data of weight, length and survival rate (SR) were collected every 10 days by sampling 50 fish from each family. The result showed that, the family 9 gave the highest growth rate. The family 9 had the highest daily growth rate, both in term of weight and length. Family 7 has varied in parameter observed value. The family 3 provided the highest SR and biomass. The results of this research shown that the population of family 3 had the highest production level. The study is also showed that the real heritability value is 0.009. This study recommend that the family 3 could be use as the candidate in the further selective breeding program.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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