The life span of the fox is 10 years to 14 years, and the reproductive life span is 6 years to 8 years. The best breeding period for artificial breeding is 2 years to 5 years. Fox is an animal that breeds once a year. The breeding season is in spring. The reproductive organs of the fox have obvious seasonal changes due to the photoperiod. Fox's plush replacement is closely related to reproduction. Therefore, the scientific artificial light control method can change the reproduction cycle of the fox and the maturation period of the coat. However, there are also some old foxes or young male beasts who have participated in breeding for the first time without breeding ability. Therefore, for the introduction of only 1 group to 2 groups of professional households, it is necessary to consider introducing more than a few male foxes for introduction.
The reproductive organs of the female fox are in a resting state in the summer (June to August). The volume of the ovary, uterus, and vagina is the smallest. The volume of the ovary increases from August to October. The follicle begins to develop, and the corpus luteum begins to degenerate until November. The corpus luteum disappears, follicles grow rapidly, estrus occurs in the spring of the following year, and ovulation occurs. At this time, the fallopian tubes, uterus, and vagina also change correspondingly with the development of the ovary, ie, the volume and weight increase significantly. Fox is a spontaneous (sustained) ovulatory animal, two ovary can alternate ovulation, young fox sexual maturity from 9 months to 10 months of age. According to statistics, about 20% to 30% of young foxes born late are not fully developed or have estrus during the breeding season.
Silver foxes are in heat in January ~ March and concentrated in February; Arctic foxes are in heat from February to April and are concentrated in March. The fox of adult fox was earlier than that of the young fox. Of course, it is also related to heredity. Her foxes have prematurely mature hereditary foxes, and sometimes they are estrus earlier than adult foxes. The Arctic fox has a significantly more multi-fetal nature than the silver fox. The silver foxes have an average of 4 heads and up to 10 heads. The Arctic foxes have an average of 6 heads to 8 heads and produce up to 24 heads. Therefore, attention should be paid to the multiple characteristics of the Arctic fox in rearing.
When breeding, the fox must pay attention to the adjustment of the fox's body condition. The fox and the arctic fox can automatically reduce the weight and weight before entering the breeding period in the natural state. This is a sign of preparation for the breeding season. However, foxes and arctic foxes are under captive breeding. Most field homes and breeders tend to experience over-fertilization of foxes because they do not pay attention to feed energy and protein balance. Therefore, when the silver fox enters in December, the Arctic fox enters in January and needs to adjust its body condition so that the foxes can achieve a balanced breeding condition before mating. Otherwise, the estrus will be postponed or not at all.
The reproductive organs of the female fox are in a resting state in the summer (June to August). The volume of the ovary, uterus, and vagina is the smallest. The volume of the ovary increases from August to October. The follicle begins to develop, and the corpus luteum begins to degenerate until November. The corpus luteum disappears, follicles grow rapidly, estrus occurs in the spring of the following year, and ovulation occurs. At this time, the fallopian tubes, uterus, and vagina also change correspondingly with the development of the ovary, ie, the volume and weight increase significantly. Fox is a spontaneous (sustained) ovulatory animal, two ovary can alternate ovulation, young fox sexual maturity from 9 months to 10 months of age. According to statistics, about 20% to 30% of young foxes born late are not fully developed or have estrus during the breeding season.
Silver foxes are in heat in January ~ March and concentrated in February; Arctic foxes are in heat from February to April and are concentrated in March. The fox of adult fox was earlier than that of the young fox. Of course, it is also related to heredity. Her foxes have prematurely mature hereditary foxes, and sometimes they are estrus earlier than adult foxes. The Arctic fox has a significantly more multi-fetal nature than the silver fox. The silver foxes have an average of 4 heads and up to 10 heads. The Arctic foxes have an average of 6 heads to 8 heads and produce up to 24 heads. Therefore, attention should be paid to the multiple characteristics of the Arctic fox in rearing.
When breeding, the fox must pay attention to the adjustment of the fox's body condition. The fox and the arctic fox can automatically reduce the weight and weight before entering the breeding period in the natural state. This is a sign of preparation for the breeding season. However, foxes and arctic foxes are under captive breeding. Most field homes and breeders tend to experience over-fertilization of foxes because they do not pay attention to feed energy and protein balance. Therefore, when the silver fox enters in December, the Arctic fox enters in January and needs to adjust its body condition so that the foxes can achieve a balanced breeding condition before mating. Otherwise, the estrus will be postponed or not at all.
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