Incubator is a device simulates fish incubation by keeping the eggs at a good water flow rate, mixing the eggs with a balance, keeping the oxygen flow in a good condition and incubating artificially in tilapia farming. Purpose of the incubator is to ensure that tilapia eggs are placed in appropriate incubators and maintained in a proper way to maintain a healthy life.
Features:Continuous water circulation and elimination, easy access
Size:Diameter - 2m - 4m, Depth - 1m
Advantages:Creates a natural condition, provides suitable use of space, can be used in large scale production.
VERTICAL TRAY INCUBATOR
Features:Less space is required, the same water can be used.
Advantages:Easy to use, low cost, large eggs can be incubated.
OTHER TYPES OF INCUBATORS IN THE WORLD
Round bottom, drop-down containers.
Grooved type incubators.
Rotary barrel or drum incubators.
Incubators with double enclosure.
Regulation of Water Flow During Incubation
During the incubation, regulate the water flow according to the development stages of the fish egg as follows. These stages:
The time during egg swelling.
The phase from the first to the end of the morula phase
The process until the eye of embryos from blastula stage is seen
The stage from the embryo to the exit from the embryo
Length of Incubation Period
The time required for the fertilized egg to turn into a fish larvae depends mainly on the species of fish, the water temperature and the dissolved oxygen content of the water.
Causes of Egg Death During Incubation
Lack of oxygen
Injuries during stripping or artificial insemination
Larvae or other animals caused by attacks by bacteria, fungi (Saprolegnia) and carnivorous (Cyclops) or breeding of insects
Treatment of Eggs During Incubation
Crustaceans and insect larvae can be filtered or controlled by treatment with 1 ppm of organic phosphoric acid ester insecticides.
Bacterial attack can only be avoided by using clean water in the hatchery.
Malachite green is widely used against fungal infection. Infected eggs are treated with it once a day. In the case of limited infection, the treatment is carried out directly in the incubator (jar, funnel or groove) with 5 ppm malachite green solution for 30-60 minutes.
Formalin treatment is also used against fungal infection, but the method requires high sensitivity and care.
A single treatment with tannin has proven to be very effective against fungal attacks under tropical and subtropical conditions. Newly prepared 5-8 g tannin solution is used in this process.
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