giant prawn seedling (Macrobrachium Rosenbergii de Man)

I. INTRODUCTION
Prawns (Macrobrachium Rosenbergii de Man) is the one commodity that have high economic value for both domestic consumption and export. Market demand is increasing, while catching prawns in nature more difficult, so the need to be developed to cultivate business. To meet these needs is required in the number of seeds in adequate and good quality, one of which is to do with the seedling.

II. Biological
Prawns, including families with Palamonidae species Macrobrachium resenbergii. Agency shrimp consists of three parts: the head and chest (Cephalotorax), the body (abdomen) and tails (uropoda). Cephalotorax wrapped by the hard leather, the front of the head that there are bulge karapas toothed rostrum called padabagian top of about 11 d 13 factory and the bottom of the 8's 14 units. In the shrimp male partner feet long way both the body and can be large enough to 1.5 times the length of the body, while the female is relatively small.
Prawns living in the two habitats, in the stadia flyblow life diair brackish and fresh water to return to the stadia to Errol adults. In the stadia flyblow metamorfose changes occur as 11 times and lasted for 30 d 35 days. Prawns are omnivora, tends to active at night.

III. Seedling
A. Selection Master
Some of the parent:
Parent-size female over 40 grams and male above 50 gr.
-The number of eggs enough.
Agency-clean, good soils and from the parasitic organisms.
Age-parent between 8 s / d 20 months.
-Choose a parent who has cooked eggs for the second time, and so on.
-Derived from the shrimp grow quickly.

B. Maintenance Association
Master maintained in the pond with a density 4 ekor/m2, given the form of Pellet feed with protein content of 30% as much as 5% of body weight. In maintaining this, male and female parent should be kept separately, both in swimming and in the concrete tanks equipped with door supply and expenditure to a depth of 80 s to 100 cm.

E. Maintenance flyblow
Flyblow prawns maintenance is done on the vessel round (conicle from fiberglass tank). It needs to be in the maintenance of other water quality and feeding. The size of feed must be adjusted to not flyblow mouth. At 3 days after hatching given feed nauplii "Artemia" with the frequency of feeding 3 hours once.
Replacement of water every day is done as much as 25 to 50, before the dirt cleaned by disipon. Salinity media maintenance lavra maintained 10 d 12 ppt. After a media Errol salinity is gradually lowered to 0 ppt and then Errol ready to be marketed or spread into the pond to be enlarged to the size of consumption.

III. DISEASES
The disease is one factor for the success of seedling prawns. Disease that usually arises is bacterial disease that originated from the sea water is Vibrio sp. Marked with such stress, fluorisensi on laeva the death and mass death occurred in a short time.
Mencekgah to prevent bacterial attack necessary to "Chlorinisasi" media and drying facilities for 7 days. If the contract is, treated with a dose of antibiotic use 11 d 13 ppm, by soaking for 3 days.