1. The parent chooses to choose the mouth of a red frog. It was originally a wild and fierce fish that spawned naturally in lakes and rivers. As a result of artificial domestication in recent years, more and more artificial breeding has been carried out using lake net enclosures and pond culture. The level is also getting higher and higher. Therefore, if the supply of aphrodisiac is in short supply, artificial propagation technology must be used to breed a large number of seedlings.
If you need to breed a large number of seedlings, you must choose a broodstock (choose time). Generally speaking, it is better to use winter as the best choice. Individuals over 3 years of age must be selected to be free from disease and injury. Principles should select parents from lakes and nets, and the average species weight of 2.5 kilograms should be used as parent.
2. Breeding ponds for broodstock to raise broodstock are more stringent. Choose rectangular ponds with an area of ​​more than 3 mu. There should be no bottom mud in the bottom of the pool, and the depth should be 1.2-1.5 meters. The drainage is convenient. The water clarity in the pond is about 15 cm. Right and left are good. In this case, there are more large species of water in the water, and 50 kg of shrimp and shrimp are fed at the same time as broodstock baits. At the end of April, change the water once a week to improve water quality and promote the development of gonads.
3. Artificial labor
(1) Identifying and matching females and females The pectoral fins of the females during the reproductive season are hand-smooth; males have a large number of beaded stars on the pectoral fins and body side during the reproductive season, and they feel rough with their hands. There are more females than red males, so be careful and careful when selecting them. The proportion of females and males in artificial insemination can be 3:1, and the male and female ratio can be 2:1.
(2) Selection of mature broodstock 1 female fish. Ovary contour is very obvious, the abdomen is inflated, soft, elastic, body flanks arranged loosely, touch the abdominal wall with a full and soft feeling.
2 males. The milky white viscous semen flowed 3 cm in front of the genital hole and it was a good gonadal development.
(3) The injection of oxytocic acid and the injection of the dose is generally performed by intrathoracic injection. The site is the base of the pectoral fin. One injection is used. The drug is HCG and LRH-A: the mixture is mixed and the male fish is halved.
(4) The artificial oxytocic drugs use conventional oxytocin astringents, and the group matures from late June to mid-July. In this period, oxytocin production usually adopts conventional oxytocin production. Water temperature 28-30 °C, the dose used per 1000 grams of the parent: (HCG) 600-800 international units + (LRH-A2) 50-60 micrograms mixture 1 injection, the effect of time is 7-8 hours.
The special oxytocin parenting can be achieved in mid-May. When the water temperature is 20-22°C, the parental use of (HCG) is 1000-1200 IU + (LRH-A2) 80-100 μg per 1000 g of female parent. + (DOM) 10-20 mg mixed use. The effect should take 12-15 hours. Male parents should use half of the above dose.
(5) The developmental spawning time is related to water temperature. At the water temperature of 24-26°C for 6-8 hours, the broodstock begins to heat. The estrus brood forms ripples on the surface of the water. Females and males sometimes rush over the surface of the water and chase quickly. At this time, net fishing should be used to artificially fertilize eggs. The fertilized egg of Aphrodisiac is a viscous egg, so it is dry insemination, and then detacked with talcum powder, and then hatched in an incubation cylinder, hatching barrel or hatching ring.
4. The fertilized eggs of artificial hatching mouth red were small and pale yellow. About 700 grains per gram after water absorption, fertilized eggs first hatch into the hatching tank. When the water temperature is between 24°C and 26°C, the release period lasts about 18-20 hours. At this time, it is transferred into the incubation loop and hatched. After 3 days of membrane rupture, it forms and can be removed from the incubator and stored in the cage. Feed the cooked egg yolk and feed it to cultivate the summer flowers under the pond.
If you need to breed a large number of seedlings, you must choose a broodstock (choose time). Generally speaking, it is better to use winter as the best choice. Individuals over 3 years of age must be selected to be free from disease and injury. Principles should select parents from lakes and nets, and the average species weight of 2.5 kilograms should be used as parent.
2. Breeding ponds for broodstock to raise broodstock are more stringent. Choose rectangular ponds with an area of ​​more than 3 mu. There should be no bottom mud in the bottom of the pool, and the depth should be 1.2-1.5 meters. The drainage is convenient. The water clarity in the pond is about 15 cm. Right and left are good. In this case, there are more large species of water in the water, and 50 kg of shrimp and shrimp are fed at the same time as broodstock baits. At the end of April, change the water once a week to improve water quality and promote the development of gonads.
3. Artificial labor
(1) Identifying and matching females and females The pectoral fins of the females during the reproductive season are hand-smooth; males have a large number of beaded stars on the pectoral fins and body side during the reproductive season, and they feel rough with their hands. There are more females than red males, so be careful and careful when selecting them. The proportion of females and males in artificial insemination can be 3:1, and the male and female ratio can be 2:1.
(2) Selection of mature broodstock 1 female fish. Ovary contour is very obvious, the abdomen is inflated, soft, elastic, body flanks arranged loosely, touch the abdominal wall with a full and soft feeling.
2 males. The milky white viscous semen flowed 3 cm in front of the genital hole and it was a good gonadal development.
(3) The injection of oxytocic acid and the injection of the dose is generally performed by intrathoracic injection. The site is the base of the pectoral fin. One injection is used. The drug is HCG and LRH-A: the mixture is mixed and the male fish is halved.
(4) The artificial oxytocic drugs use conventional oxytocin astringents, and the group matures from late June to mid-July. In this period, oxytocin production usually adopts conventional oxytocin production. Water temperature 28-30 °C, the dose used per 1000 grams of the parent: (HCG) 600-800 international units + (LRH-A2) 50-60 micrograms mixture 1 injection, the effect of time is 7-8 hours.
The special oxytocin parenting can be achieved in mid-May. When the water temperature is 20-22°C, the parental use of (HCG) is 1000-1200 IU + (LRH-A2) 80-100 μg per 1000 g of female parent. + (DOM) 10-20 mg mixed use. The effect should take 12-15 hours. Male parents should use half of the above dose.
(5) The developmental spawning time is related to water temperature. At the water temperature of 24-26°C for 6-8 hours, the broodstock begins to heat. The estrus brood forms ripples on the surface of the water. Females and males sometimes rush over the surface of the water and chase quickly. At this time, net fishing should be used to artificially fertilize eggs. The fertilized egg of Aphrodisiac is a viscous egg, so it is dry insemination, and then detacked with talcum powder, and then hatched in an incubation cylinder, hatching barrel or hatching ring.
4. The fertilized eggs of artificial hatching mouth red were small and pale yellow. About 700 grains per gram after water absorption, fertilized eggs first hatch into the hatching tank. When the water temperature is between 24°C and 26°C, the release period lasts about 18-20 hours. At this time, it is transferred into the incubation loop and hatched. After 3 days of membrane rupture, it forms and can be removed from the incubator and stored in the cage. Feed the cooked egg yolk and feed it to cultivate the summer flowers under the pond.
Gynecological Instruments are singel use production of gynecological products,which include Disposable vaginal pad (a variety of gynecological examination pads), PE gloves (latex gloves), disposable swab, disposable scraper,different components could be configured according to customer requirements. Products are widely used in gynecological out-patient, physical examination center.
When useing the gynecological instruments, please kindly note the below tips:
A) This product is for one-time use, after the destruction.B) the packaging is damaged, prohibited to use.C) This product has been ethylene oxide sterilization.D) sterile, valid for two years, banned the use of expired.E) The product should be stored in the relative humidity of not more than 80%, non-corrosive gas, cool, dry, well ventilated, clean warehouse.
Gynecological Instruments
Gynecological Instruments,Hospital Gynecology Instrument,Gynecology Surgical Instrument,Gynecology Vaginal Speculum
Hebei Orient Imp. & Exp. Co. Ltd. , http://www.orientmedcare.com