Popular breeding fox breeding precautions

(1) Fox's mating date Fox's mating date is related to feeding and management conditions, young fox's birth time, and climate. Under artificial cage conditions, silver black foxes are usually bred from mid-January to late March, while arctic foxes are generally from mid-February to late April. Premature and late female foxes appear to have lower fertility rates.
(2) The mating methods of foxes are mainly divided into natural mating and artificial insemination. Natural mating is divided into cage feeding and manual mating.
1 The advantage of mating and rearing cages is to save people and work less. The disadvantage is that there are more foxes for feeding, feed is wasted, and the expected date of production is difficult to control. At present, many domestic companies do not use them.
2 Artificial breeding This method is currently a major method used in the country. The non-mating period male and female foxes are separately reared, and after entering the breeding period, the male and female foxes are placed in a cage for mating, and the male and female foxes are separated after mating.
3 The artificial insemination of fox This method adopts the device to take the semen of the male fox, and then uses the device to input the semen into the uterus of a foetus with good estrus, and is used as a method to replace the male and female foxes in natural mating. The operation process of artificial insemination mainly includes the collection of semen, the detection of semen quality, the dilution of semen, the identification of female foxes and the insemination.
a. Semen collection methods commonly used include fine-grained extraction, electro-stimulating harvesting and pseudo-vaginal harvesting.
Pre-seizure preparation: The fox used for semen collection, the collection of fine cups, diluents, microscopes, and electro-stimulators, etc., must be prepared in advance. The sperm collection room must be clean and exposed to ultraviolet light. 2 - Sterilize for 3 hours at room temperature between 28-35°C. According to the need for semen preservation, refrigerators, water baths, and liquid nitrogen tanks can be provided.
Operators should cut their nails and wash and disinfect their hands. The collection containers used should be sterilized and the collection chamber environment should be quiet.
Unmanned mining, also known as massage, is the most commonly used method of sperm extraction. When the sperm is collected, the male fox is put into Baoding or other people cooperate with Baoding to make the fox stand up. The operator quickly and regularly massages the foreskin of the fox, causing the erection of the penis. There are significant differences in the methods of sperm collection between silver black fox and arctic fox. The method is simple and does not require excessive equipment. However, the operator is required to be skilled and trained. Electro-stimulation method The essence of electro-stimulation is the use of electric stimulation to collect sperm. However, because this method has obvious adverse effects on the male fox, it has been used less frequently. Pseudo-vaginal sperm extraction The adoption of a false female vaginal fox can be used for false vaginal sperm sampling. Because it is difficult and time consuming to adjust the female fox, this method is currently used less frequently.
b. Semen quality testing After semen collection, the semen's sperm density, vigor, and deformity rate are checked, and then the semen's use value and dilution factor are determined.
c. The dilution of semen determines the dilution factor based on the quality of the semen. Generally, it is necessary to ensure that each female fox enters at least 50 million sperms at a time.
d. Identification of the heat of the estrous identification of female fox has external observation method, test feeling method, vaginal smear method and intriguing method. The production often uses several methods alternately.
e. There are many artificial insemination methods for artificial insemination. At present, needle insemination is commonly used. The insemination needle is designed according to the physiological structure of the mother's cervix. Each insemination volume is generally 1.0-1.5 ml, and the effective sperm count should be between 0.4-0.6 million.
Insemination should be prepared before the insemination equipment and Baoding devices. The insemination tool (dilator, insemination needle) must be strictly sterilized and stored in a sterile container for use. The insemination needle should be 1 per female fox and cross use is prohibited. The insemination operator should thoroughly wash, disinfect, and wipe dry with a sterile towel.
When inseminating, slowly insert the dilator tube into the vagina of the female fox, widen the vagina, then hold the insemination needle in one hand, hold the cervix with one hand, and gently send the insemination needle into the womb. The syringe injects semen into the uterus.
(3) Precautions for the implementation of artificial insemination 1 Selection of excellent foxes Because of the use of artificial insemination techniques, each fox can breed a large number of offspring within one year. If inferior foxes are used, the quality of foxes will rapidly degenerate.
2 Semen collection and insemination equipment should be strictly sterilized. Artificial insemination equipment should be strictly sterilized and sterilized according to operating procedures, otherwise it will lead to rapid spread of disease in the fox field.
3 accurately grasp the timing of insemination Fox is a seasonal single estrus, spontaneous ovulation animals, only one estrus period each year. Although sperm and eggs can survive in the female fox reproductive tract for a period of time, improper insemination time can also cause pregnancy to fail.
4 The method of sperm extraction and insemination should be skillful and quick. The operators must undergo technical training to avoid stiff and prolonged operation. This will cause damage to the male and female fox reproductive systems.
5 Ensure that the dilution of semen quality Semen dilution should be strictly in accordance with the formula, stored in closed sterilized containers, and used within the validity period. Do not use contaminated, expired diluted semen.
6 Semen should be entered into the womb. The fox is an intrauterine ejaculate. Transferring semen into the vagina can affect the conception rate.
(4) Application of Reproductive Hormone Reproductive Hormone has a significant effect on promoting furrow maturation, promoting follicular maturation, estrus synchronization, and ovulation. In the breeding of foxes, there are commonly used pregnancy hormone gonadotropins, each fox can be used 100-500 international units; human chorionic gonadotropin, each dosage is 200-250 international units; luteinizing hormone-releasing hormone, each Fox injection 8-10 micrograms.

...

Veterinary Products

Ivermectin Injection,Veterinary Injection,Veterinary Products,Veterinary Tablet

NOUVASANT PHARMhealth LTD. , http://www.nouvasant.com