Loach artificial production method

On April 28th, Ding Youbing of Wuwei County, Anhui Province, came to the telephone to report that he currently has 2 mu of water to carry out mud aquaculture. At present, there is a small amount of adult quail who would like to artificially stimulate the production of muddy seedlings and expand production. He asked: muddy How to carry out artificial labor? Where does fish buy oxytocin?

The reporter contacted Professor Ling Feifei from the Fisheries Research Institute of Soochow University. Ling Feifei said that the mud loquat performed artificial oxytocin to enable the relatives to estrus during the same period, spawned eggs, and ensured that the seedlings were of the same specifications, and was suitable for aquaculture farmers with large aquaculture areas. From May to June, it is the height of muddy spawning. The commonly used fish oxytocins are salmon, carp pituitary (PG), chorionic gonadotropin (HCG), luteinizing hormone releasing hormone analogue (LRH-A), Diethyl ketone (DOM), reserpine (RES) and so on.

Before muddy artificial oxytocin production, ponds should be prepared in advance and fish nests should be placed in the water body (determined according to the amount of intimacy of ponds) for mud loaches to chase after spawning. You can also squeeze out the male squeaky semen, squeeze the female quail egg into the vessel and mix it gently with feathers. Rinse the fertilized egg on the fish nest after rinsing with water. If it is a hydroponic hatchery, it is necessary to increase oxygen or to give a microfluidic environment to ensure the required dissolved oxygen when the fertilized egg hatches. Three days after the larvae came out of the membrane, they were transferred to a pool with a better water quality environment and fed with cooked egg yolk.

Sun Shouqi of the Fisheries Technology Promotion Station of Huaiyuan County, Anhui Province, conducted the “Laboratory Test of Large Scales' Loaches for Artificial Oxygen Production”. He believes that when the artificial production of muddy loach should be carried out, the female crickets with well-developed abdomen and ovary outline should be selected and healthy and lively males should be selected. As a pro. Chorionic gonadotropin can be used as an oxytocin, 0.2 ml per female quail, halved in males. When injecting oxytocin, two groups, one with a loach control net or cloth to fix the loach, and the other with a medical skin test syringe for injection, using the back muscle injection method, the needle tip and the back muscle at a 45 degree angle, inject into the head Drugs, injection depth of 0.2 cm or so. Put the inoculant of the oxytocin into the water to be produced. After the end of spawning, remove the cage and the prophylaxis. Incubate the eggs in the presence of microfluidic. Normal temperature is 22°C, and 90% of fertilized eggs are hatched in 41 hours. The seedlings were seedlings, water temperature 25 °C, 30 ~ 32 hours hatched seedlings.