1 After feeding and management of males and females during pregnancy, they enter the gestation period. The gestation period is the period in which the most nutritious food is required. Feed emphasizes freshness, full price, diversity, and palatability. Remember that moldy feed cannot feed foxes, and 2â€“3 shredded eggs can also feed foxes to prevent stillbirths, rotten births, and abortions. Embryos develop slowly in the early stages of pregnancy, and develop rapidly in the later stages, and the sagging of the abdomen can be seen within 30 days. Its standard is 418 kJ (100 kcal) of metabolizable energy, silver fox is 10 g of digestible protein, Arctic fox is 11 g of digestible protein.
Some pregnant foxes have a pregnancy reaction in the early pregnancy, do not eat or vomit, or loss of appetite, etc., found that this situation must panic, give some fox like food, such as milk, eggs (cooked), etc., as long as every day Eating some food does not affect pregnancy and calving.
In this period, it is required to be quiet in the venue, prevent all motor vehicles from entering and exiting, stop all on-site project construction, prevent entry of strangers and all visitors, and prevent running beasts from grasping animals.
It is necessary to ensure that pregnant foxes have sufficient drinking water throughout the day. Be sure to put the feed into the field of hygiene, deteriorating feed can not be fed to pregnant fox.
The breeding period of foxes is very long, as much as about 2 months. There is a big gap between the mating fox of the early mating and the late mating, and the fox can be divided into two batches to enter the gestation period. If the foxes are small, in order to promote early estrus in the unconditioned female fox, the unassigned female fox and the pregnant fox can be transferred to the gestation period at the same time.
2 Keeping live births
The fox has a baby after 52 days of gestation. The production box and cage net should be disinfected for 5 days before birth, and fire-fighting disinfection (blow light) is generally used. And soft weeds were planted, and the grass should be placed under sunlight for natural UV disinfection. In the cold north, the grass is to be compacted in the four corners to make nests artificially; in Hebei and Shandong at low latitudes, the grass is not to be oversized.
Before the foxes are born, there are warning signs. Generally, they show plucking, eating, abnormal activities and so on. Especially the female fox with strong motherhood, when it encounters wind and cold weather before production, it is often used to plug the production box door; some mother foxes also have grassy phenomenon. Found that the above situation shows that the female fox will be on the job.
The farrowing time is mostly at night or in the early morning, but it is also produced during the day. The entire process of hair buns lasts for 1 to 6 hours, with a majority of 2 to 3 hours. After the fetus is born, most female foxes can strip the fetus's placenta and eat it, break the umbilical cord, and dry the mucus on the fetus.
The fox can be sucked after birth and the lactation period is 55-60 days. Most female foxes can take good care of foxes under normal nutritional conditions, but some mother foxes (including stillbirths or live animals) that are initially produced, have no milk, or have not been completely produced, do not care for foxes. Therefore, the group of breeders are required to check the fox's farrowing situation within 12 to 24 hours after delivery:
1Whether the fetus has unpatched fetal umbilical cord, and the umbilical cord is not broken,
2 The mother does not pull hair around the breast; if the fox eats milk,
3 There is no stillbirth,
4Whether the female fox is completely finished or not.
In the above situations, different measures should be taken to deal with them.
1 The person who has not stripped his or her childbirth shall manually remove the tires and dry the body mucus with absorbent cotton, cut off the umbilical cord and sterilize it. If the fetus stops breathing, rescue the patient with artificial respiration.
2 If the mother's fox is not pulled around the breasts, it is necessary to manually pull the hairs. It is easier to pull the hairs from the back to the back when pulling the hairs. This will help the foxes to feed. If the fox feeds milk or not, it can be seen that the foxes are piled up, their mouths are dark, their abdomen is full, and their body is warm. On the other hand, the foxes scattered around and the abdomen dries up, indicating that the female fox may not have milk at all and the second one has milk, but the mother is not strong. Will not take care of the fox. The third may be because the old female fox is sick and unable to take care of the fox. The fourth may also be that old mother foxes do not produce abdomen still have foxes (mostly stillbirths). The foxes produced in the above situations are looking for babysitters. The silver fox has more than 10 fox-eared foxes and the Arctic fox has more than 14 litters. Due to the limited female fox nipples, the number of foxes produced is higher than that of female foxes, and it is also necessary to look for babysitting. Method of fostering: The brooded foxes will be wiped with the grass of the fox of the nanny's fox, or they will be painted on the fox with the foetus' urine to obtain the fox's scent of the fox on behalf of the fox and the fox and the fox Mix well with foxes. In addition, APFs that are more than nipples must be selected for large size and robust generations, and they can grab milk after they are raised. Strive for a successful generation. Unfinished female foxes are required to take oxytocin for oxytocin production (most of them are stillbirths). After production, the foxes are transferred to the fodder for nursing. Diseased female foxes have to be treated. If the number of bred animals is relatively small, no nanny fox can be found. Animals can also be found for fleas, dogs and cats. However, they need to be newly born; these animals do not have to be fed with cattle and goat milk, but they are slow to develop. The best way is to use the fox contemporary caregiver.
Some field homes have a method of setting up a public delivery room to artificially supervise the production of foxes. This method can be used to select the weak foetus into the incubator. After the heat is strong, it can be put back into the fox's fox to nurse. The foetus is not broken and separated. If the nipple is not found, it can also be found. Can be sent to the female fox in a timely manner to eat milk; for dystocia can also be artificial labor. This method does enable some living foxes to survive. However, artificial monitoring of the litter is an unexpected disturbance to the female fox. It also tends to delay the maternity period and cause the fetus to die in the abdomen. This method is effective. Fear of scared silver and black fox is even more inappropriate, hopefully careful application.
Nutritional standards for breastfeeding are roughly the same as during pregnancy, and for each 418 kJ (100 kcal) of metabolizable energy, 10g of digestible black fox can be digested, Arctic fox 11g can digest protein, feed emphasizes digestibility, milk, goat's milk Or milk powder is an indispensable feed. Although it has a small proportion in diet, it is replaced by any feed because of various milk or milk products, in which protein, fat, carbohydrates and inorganic salts are all digestible. Nutrients. The young fox will have a feed amount before eating, and it may be given according to the different standards of 10 instars, 11 to 20 days of age, 21 to 30 days, and 31 to 40 days of age. Only by this standard can normal production and development of the baby in the breastfeeding be developed.
3 Breeding focus during the breeding period
The growth period is the fastest growing stage of young foxes, especially when young foxes are the fastest growing at 3 months of age. In this period, the quality of feeding is directly related to whether or not the ready-to-prepare fox can participate in breeding in the next year, and whether the animal can meet the standard size and quality requirements.
After 8 weeks of age (55-60 days), the foxes can wean the litters, but it is not immutable. It depends on the amount of mother fox milk and the quality of their mother's relationship. Most of the reduction in the amount of breast milk, the emergence of female foxes to refuse fox breastfeeding and weaning in advance, but fox nursing milk should not be less than 45 days. Weaning is the separation of the mother's pups. The puppies, due to their departure from the fox and their companions, are most likely to experience stress reactions such as not eating, barking, disturbed actions and fear of people. Therefore, after the separation of the nest as little as possible, and to give the original lactation feed 5 to 7 days unchanged, until the Fox is accustomed to living independently, and then according to the standards of young fox formula feed diet. Its metabolic energy increases with age, and the digestible protein is 7.5-8.5 g per 418 kJ (100 kcal). At the same time, the supply of cod liver oil, VB1, VB2, and VC must be guaranteed. Attention should be paid to the supply of phosphorus-calcium (crushed bone and bone meal) in farms or specialized households mainly based on animal meat and viscera, and under the above-mentioned standard conditions, 7 to 10 In the month, each 418 kilojoule (100 kcal 0 metabolism energy) is required to supply 4~5g of animal fat to meet the energy requirements of young foxes, especially for the Finnish super-large arctic fox and its hybrids. 0.5 to 1.0 times higher.
The method of raising young foxes keeps increasing the energy level with the gradual increase of the age when the standard is not changed, or that, as the appetite increases, the amount of feed (the ratio of various feeds is constant) is increased to meet the growth of young foxes. The need for development. In order to balance the growth and development of young foxes, two or three of the young foxes can be kept in one cage at the beginning of their nesting, but not more than 10 to 15 days. They must be kept in a single cage to avoid uneven development due to competition for food. phenomenon. From October to December, the amount of fat in the feed can be reduced, and the amount of grain in the feed can be increased. Animal feeds in the diet should be fed with more sulphur-containing amino acids to ensure the maturation and quality of the fur.
The fox breeding period is in Shengshu, and it is necessary to pay attention to the heatstroke. In particular, from July to August, the fox must pay attention to the shade and ensure free drinking water. If conditions permit, it can be sprinkled and cooled. This is particularly important for low latitudes in Hebei and areas south of Shandong. .
From the end of August to the beginning of September, the testicles and ovaries of young foxes begin to develop. The preparation foxes are kept separately from the skin beasts. The standard is higher than the skin beasts, which is 418 kJ (100 kcal) of metabolizable energy more than 8.5g of digestible protein. And add VE5~10g. Also pay attention to the prevention of internal and external parasitic diseases. Another is the small beast is in the growth period, strong appetite, grain in the feed to be cooked, otherwise often due to fermentation, causing swelling of the beast, for this, you can use early morning and evening cool when feeding or feed 3 times a day to avoid swelling Symptoms (gastric dilatation and perforation) occur.
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