鲤鱼脑垂体

鱼类脑垂体促性腺激素是促使鱼类性腺成熟和排卵的重要激素,鲤鱼脑垂体是我国鱼类人工繁殖中常用的鱼类催情物。鲤鱼脑垂体的采集技术要点是: 一、采集时间以2～4月份为采集鲤鱼脑垂体的最理想的时

鲤鱼的脑垂体因其天然无害而被广泛用于各种鱼类。当用于雄鱼时，它可以增加鱼的产量。目前用于观赏鱼，如鲤鱼、草鱼、鳙和银鱼、鲶鱼、洄游鱼、蓝鲶、热带白鲟、淡水鲨鱼、梭鱼等鱼类。
 

The pituitary gland of carp is widely used in all kinds of fish because of its naturalness and harmlessness. When used on male fish, it can increase the production of fish. It is currently used in ornamental fish such as carp, grass carp, bighead and whitebait, catfish, migratory fish, blue catfish, tropical white sturgeon, freshwater shark, barracuda and other fish.

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 natural conditions especially as many species are now grown some distance from their original geographic location. Thus, endocrine or a combination of endocrine and environmental manipulations 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 before 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 intramuscularly at a dose of 1-10 Milligram/kg fish. Available in vials of 1 Gramm (= 1000 Milligram).