ENGINEERING seedling FISH
(Mystus nemurus)
I. INTRODUCTION
Fish (Mystus nemurus) is a freshwater fishery commodities in Indonesia. This fish has been successfully be made in Sukabumi BBAT since 1998. The texture of the meat white, thick and smooth Tampa thorn in the flesh, so that the community is very popular.
Before the production of fish generally come from the arrest in nature, so the results are not certain of the number and size. With the technique is known spawning fish Mystus nemurus, hoped business culture will be developed so that production can meet the needs of the community.
II. SISTEMATIKA
Phylum Chordata, Class Fishes, SUB-class Teleostei, genus of Mystus nemurus.
Mystus nemurus fish, stash or grouse have reached the eyes, have agreed not crouch pectoral fin and a big fat fin, and mouth sag. Mystus nemurus brown greenery, live in basic water and omnivora.
In West Java Mystus nemurus known by the name of charge, senggal or singah: In Central Java: Singapore and Malaysia, bawon; Sarawak, baon: Central Kalimantan, Niken, siken, tiken, bato, baung white, and in Sumatra, baong.
The characteristics of the parent male and female Mystus nemurus:
- Master female: body shorter, has two forms of gender-hole round.
- Master male: Body longer, have one hole that gender shapes aft.
III. Seedling
A. Gonad maturation
Gonad maturation was conducted in a swimming Serious water with a continuous density 0.2 to 0.5 kg/m2. Every day Pellet feed given as much as 3 s / 4% per day from the weight of his body.
B. Selection Master
o Selection parent to parent to know the level of maturity that will be cultivated. .
o Master female marked with a distended bellies and soft, when the eggs ynag sorted out the shape of a round, whole brown color.
o Master male body is marked with the colors of the equipment and slightly reddish.
C. Injecting
o Master female states with ovaprin as 0.6 ml / kg and with a male ovaprin 0.5 ml / kg. Injecting done twice with the lapse of time of 12 hours. Each injection of as much as half the total dose.
o injecting done on the back
D. Spawning / Page
o When will be the natural, male and female parent who has been in the same states in the tanks that have been ijuk and allow spawn own.
o When will be sorted, then Page 6 will be made up to 8 hours after the injection of the second.
o The first step is to prepare sperm: take a bag of sperm with the male parent dissect the stomach, kuntimng bag and remove sperm. Liquids sperm in a glass that is already filled with NaCl 0.9% as part ½. Stir well to the average. If too thick, add NaCl solution until the white milk rather thin.
o Take the female parent, which will be issued eggs. Pijit the stomach toward the hole until the eggs out of sex. Dimpung eggs in a plastic cup that is clean and dry. Enter the solution less sperm and until evenly mixed. So that fertilization occurs, add water and mixed until evenly so that fertilization can take place with good, to wash eggs from other blood and dirt, add more water and then discarded. Make flushing s 2 / 3 times to clean.
o Eggs that have been included in the net hatchery aquarium water that has been filled. How to enter, eggs, taken with the quill, and not to the entire surface evenly until the aquarium. In the 36 hours the eggs will hatch and produced flyblow moved to the aquarium maintenance flyblow. After two days, flyblow fed the water flea (Daphnia, or Moina) or silk worms (Tubifex), which has been chopped. After the age of 4 days flyblow silk worms fed up to seven days.
E. Separating
o Preparation of the pond conducted a week before researching flyblow, which includes drying, dike repair, processing and manufacturing base land kemalir.
o management is done with calcium oxide dissolves into the barrel, then spread wide and constructed swimming base. 50 gr/m2 dose.
o fertilization using chicken dung is dried with a dose of 500 s / d 1000 gr/m2. A water pond filled with 40 cm and after 3 days organophospat accomplished with 4 ppm and left for 4 days.
o Seeds are spread in the morning with a density 100 ekor/m2.
o Separating I do for 14 days, separating II, conducted for 30 days. Additional feed day form of flour Pellet 0.75 gr/1.000 tail.
IV. DISEASES
Disease that often attacks the fish Ichthyopthirius was multifillis or better known as the white spot (white spots). Prevention, preparation can be done with good swimming, especially drying and management. Instruction is done with the kitchen throw salt 200 gr/m3 every 10 days during maintenance or soak the fish in the solution to the pain Oxytetracyclin 2 mg / liter.
