seedling (Pangasius hypopthalmus)
I. Introduction
This fish is quite popular, (Pangasius hypopthalmus) fish came from Thailand and was first imported to Indonesia in 1972 by the Fisheries Research hall freshwater Bogor. The term Siamese is another mountain lele Bangkok or pangasius and in their home country called "Pla sawai."
I. Biological
Phylum: Chordata
Sub. Phylum: Vertebrata
Supae class: Leo
Class: Ostechtyes
Subclass: Actinopterygii
People: Ostariophysi
Clan: Pangasius
Type: Pangasius hypopthalmus
- Agency aft, flat body shape, not scaly, small head, small eyes, mouth, head and true width, has two pairs of mustache, a small back fin and higher, have adefose Fin, the color of gray spine and abdomen blackish silver.
- The river that many fish found in Southeast Asia, Lifestyle disungai that, in slightly muddy, muddy base and the temperature 25's to 30 OC.
- Jabal Siamese omnivora including fish, but sat on a flyblow Carnivora. Food of interest Brachionus sp., Crustacea, Cladocera. Flyblow yan new yellow eggs have exhausted the nature of the cannibal high.
- Association of Siamese mountain can be cultivated after the age of 4 years and married in the rainy season.
II. Seedling
A. Maintenance Association
- Master stored in special ponds with 0.25 density, s / d 1 kg/m2. Food provided by the form of Pellet dose of 3% per day and given 3 times per day.
- Signs of a mature parent gonad:
Females: abdomen see big, soggy hole and genitals reddish color.
Male: sex hole and when the reddish color to the hole dipijit sex will be out in white liquid (sperm).
B. Spawning
- Spawning a new can be done only in artificial, that is, menyuntikan hormone stimulation that comes from the gland hipofisa goldfish, a LHRH-or HCG.
- Master the female injection twice the lapse of time of 12 hours. When using kelenjer hipofisa first injection of as much as 1 dose, the second injection of 2 doses, but when using LHH with a dose of 0.5 cc / kg parent. The first injection of 1 / 3 and the second injection of 2 / 3 part ..
- Master male states once the 1 / 3 doses and conducted simultaneously with the injection of both the female parent.
- After 6 d 12 hours of injecting the second female parent checked every 1 hour ovulasi occurred when the striping is done with a trace of the stomach from the front of the hole toward sex and the eggs were in the container / tray plasitk. At the same time, the male parent also distiping mixed with sperm and eggs. Then added physiological solution (NaCl 0.9%) and stirred using quill during 1s / 2 minutes.
C. Hatching Egg
Eggs hatch in the aquarium with Aeration and water heater. The temperature 27 d OC 29. Usually the eggs will hatch within 18 d 24 hours.
D. Maintenance flyblow
Flyblow maintenance is still done in the hatchery aquarium, but the previous ¾ dirty water and the remaining eggs hatch, which does not have to be removed and replace with water to keep good quality ait. Replacement must be done each day until ready flyblow spread in the pond. The density of the separation flyblow 50's 75 head / liter. Flyblow the age of two days, given the form of feed naupli artemia until age 6 days. After the silk worms flyblow given until the age of 14 days.
E. Separating
- Preparation of the pond conducted a week before researching flyblow, which includes drying, dike repair, processing and manufacturing base land kemalir.
- Fertilization using chicken dung with the dose of 500 s / d 1000 gr/m2. A water pond filled with 40 cm and 3 days after orgophosphat accomplished with 4 ppm and left for 4 days.
- Management is done with calcium oxide dissolves into the barrel, then spread wide and constructed swimming base. Dosinya 250 d 500 gram/m2.
- Seeds are spread in the morning with a density 100 d 200 ekor/m2.
- Separating conducted for 21 days. Additional feed given each day the form of flour Pellet 0.75 gr/1.000 tail.
DISEASES
The disease is often attacked Jabal Siam is a parasite. Prevention can be done with the kitchen throw salt 200 gr/m3 every 10 days for maintenance, while for the disease Trichodina can be provided with a dose of formalin 25 ppm.
