CATDOLL : CATDOLL: How to use fish oxytocin reasonably?

How to use fish oxytocin reasonably?

The principle of fish oxytocin is to use a combination of physiological and ecological methods to directly inject oxytocin (PG, HCG or LRH-A, etc.) into the fish body to replace the role of gonadotropin secreted by the fish's own pituitary gland, or replace the role of LRH released by the hypothalamus, which triggers the pituitary gland to secrete gonadotropin, thereby promoting oocyte maturation and spawning. Among fish oxytocin, the main components of the pituitary gland and HCG are FSH and LH. After entering the blood circulation of fish, they directly act on the gonads of carp, promoting gonadal maturation and spawning.

For fish with low spawning rate and low total spawning volume, such as loach, Chinese spiny target (Qingbo) and other medium and high-end fish, dioic acid (DOM) and pituitary gland (PG) should be added on the basis of using LHRH-A2+HCG, and the effect will be doubled.

For common fish, such as grass carp, silver carp, bighead carp, carp, crucian carp, etc., LHRH-A2+HCG is very effective, and there is no need to add other oxytocin drugs to reduce production costs. Grass carp using LHRH-A2 alone, silver carp using chorionic gonadotropin type A alone, and bighead carp using chorionic gonadotropin type B alone are sufficient to achieve the purpose of smooth spawning.

Commonly used fish oxytocin agents include the following:

1. Tropogen: Tropogen is a hormone-type oxytocin, commonly used to increase the spawning rate of female fish and promote follicle maturation. Common tropons include synthetic GnRH (growth hormone-releasing hormone), hCG (human chorionic gonadotropin), etc.

2. Clonidine: Clonidine is an anesthetic, commonly used in the process of inducing spawning in fish. It can inhibit the physiological reactions of fish, reduce the stress response during spawning, and increase the spawning rate.

3. Ovaprim: Ovaprim is a commercial oxytocin made from a mixture of GnRH and hCG. It is commonly used in artificial breeding of marine fish and can effectively promote follicle maturation and spawning.

4. Acacetin: Acacetin is a plant extract that has an induced ovulation effect. It is often used in artificial breeding of freshwater fish, and can increase the spawning rate of female fish and promote the maturation of follicles. It should be noted that the use of fish oxytocin should comply with relevant laws, regulations and technical specifications to avoid adverse effects on the environment and fish. At the same time, the use of oxytocin requires strict adherence to the instructions for use to ensure the induced ovulation effect and the health and safety of fish.