Judul: Produksi udang red rherry Neocaridina denticulata sinensis pada kepadatan yang berbeda dengan menggunakan filter double bottom
Abstrak: Red cherry shrimp Neocaridina denticulata sinensis is one of ornamental fishes which is cultivated in ponds with low stocking density. The culture have to be intensified in order to fulfill the increasing demand of ornamental fish. This experiment was aimed to obtain optimal stocking density in intensive culture of red cherry shrimp. The initial size of the shrimps was 1,41±0.13 cm in length and 0,04±0.01 g in weight. The shrimps were reared at 12 tanks sized of 50x30x25 cm with double bottom filter and filled with 20 cm height of water. The treatments was stocking density of 200, 400, 600, 800 shrimp/m2. The shrimps were fed on pellet at rate of 5% body weight/day. The result showed that stocking density did not significantly affect survival rate and coefficient of variation (p>0.05), but significantly affected growth of absolute length, specific growth rate, and feed efficiency (p<0.05). Economic efficiency showed that 800 shrimp/m2 of stocking density gave the best result of R/C ratio.
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Judul: Pertumbuhan dan kelangsungan hidup benih ikan redfin Epalzeorhynchos frenatum pada kepadatan yang berbeda.
Abstrak: In a good environmental condition and adequate quantity of food, an increase of stocking density will increase yield. This experiment was aimed to obtain information about the most optimum stocking density of redfin nursery culture. The initial size of redfin fry was 2.22±0.21 cm in length and 0.11±0.06 g in weight, which was obtained from a redfin farmer at Pagelaran, Dramaga, Bogor, West Java. Prior to experiment, the fry was adapted in the aquaria with a size of 30x20x20 cm3 which had been filled with 5 ℓ of water. The fry was then cultured at 4 different stocking density treatments. 2, 3, 4, 5 fry/ℓ with 3 replications for a period of 30 days. The fry was fed by Oligochaeta twice a day at satiation. Culture water was exchanged twice a day in the morning and on the afternoon with a rate depended on the stocking density; 40%/day, 60%/day, 80%/day and 100%/day, respectively. Stocking density significantly affected fish survival, specific grow rate, growth of absolute length and coefficient of variation (p<0.05) with 2 fry/ℓ density treatment resulted in the best production performance.
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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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