Aquaculture Technology
FISHFARMING & EQUIPMENT

In nature, reproductive development and spawning in finfish is controlled by environmental factors such as temperature, photoperiod, nutrition, water quality, and presence of spawning substrate. In aquaculture, it is not always possible or economically feasible to replicate nautral conditions especially as many species are now grown some distance from their original geographic location. Thus, endocrine or a combrination of endocrine and environmental manupulations are utilized to facilitate reproduction. In the last decade significant research has been conducted worldwide on ripening fish sexuality using various preparations.
Carp Pituitary Glands (CPG) are whole acetone dried pituitaries of carps, which and can be used to speed up maturation (induced maturation) as well as the spawning process itself (induced spawning). Intramuscular injections are highly effective in increasing the incidence of spawning as well as possibly increasing egg take in certain species. The potential economic benefits of taking eggs earlier in a given season or in fact eliminating seasonality altogether in certain climates and regions are significant. Carp pituitary extract contains a variety of pituitary hormones, including gonadotropins, which are effective for the induction of final maturation and ovulation in various fish species. The pituitaries are harvested bevore the spawning season from mature carps with a body weight of more than 1 kg. There are about 300-400 pituitaries per gram. Carp pituitaries are pulverized and than suspended in distilled water or physiological saline solution (0,9 %) and injected intramusculary at a dose of 1-10 Milligram/kg fish. Available in vials of 1 Gramm (= 1000 Milligram).

Eugénol-Methoxyphenol (Clove-oil) is a very usefull, natural and environmental friendly tranquilizer, which can be used for various fish species. A higher tolerance against longer exposure times gives a greater security and makes the application under practice condition much more easier. Because of the low dosage (30-70 ppm) there occures also no alteration of the taste of the fishes. Clove oil is more effective at reducing the short-term stress response induced by handling, and is recommended as an alternative fish anaesthetic. Available as pure oil in vials of 10 or 100 Milliliter.

DESINFECTANTS for aquaculture

We supply various chemicals for desinfection in aquaculture and aquaria. Some chemicals are in some countries only allowed for fish which are not used for human consumption, like eggs, spawners or ornamental fish.

The following chemicals are available:

Desamar for desinfection of equipment, water and eggs;
Chloramin against gill diseases and myxobacteria;
Copper sulfate against gill diseases and algae;
Virkon against bacterioses and viroses;