The scientific breeding of rex rabbits

Scientific mating promotes female rabbits to prolific

Choose the best breeding environment and breeding time. To avoid high temperatures as much as possible, because the female rabbit has a higher litter size below 25 °C, so early autumn should be in the morning and evening when the weather is relatively cool when mating, when the rabbit's mental status is better, the pregnancy rate is higher . In addition, the feeding time should be avoided so as not to let the male rabbit think that the female rabbit came to eat with it and could not mate. In addition to the choice of morning and evening time, it is also important for the female rabbit to choose a good breeding time during the estrus period. Female estrus is characterized by irritability, loss of appetite, and even dumbness, planing, and the pus is wet and swollen. During the early, middle and late stages of the whole estrus period, the judgment mainly depends on the changes of the pus. The non-estrus female rabbits are not swollen and show normal flesh-white color; the early stage of estrus becomes more humid, slightly swollen and pink; the middle stage is moist and swollen, showing red (commonly known as old red); the latter is moist, swollen, and purple. The best breeding period is in the middle and late stages of heat. Therefore, there is a saying that "Pink is early, Zihei is late, and Laohong is right."

Scientific arrangements for breeding.

The female rabbit is generally caught in a male rabbit cage for breeding. If the female rabbit does not accept the mating, another male rabbit may be exchanged, but it is better to put the female rabbit back into the original cage for a while. After the peculiar smell has disappeared, the female rabbit is then caught in another male rabbit cage for breeding. Otherwise, when the female rabbit has the odor of the previous male rabbit, the latter male rabbit is not only unworthy, it may even bite the female rabbit. Pay attention to the rational arrangement of male rabbit breeding. Male rabbits that are unfit or over-fitting for long periods of time can cause infertility or infertility. Because the male rabbit is unfit for a long period of time, the aging or dead sperm in the accumulating epididymis will be increased. Over-breeding will also make the sperm production unable to keep up, the semen concentration is low, and the immature or deformed sperm is also increased. Therefore, the number of reasonable breedings is generally about once a day, with 2 days of rest for 1 day.

Grasp mating age of female rabbits.

The initial mating age of the female rabbit is between 5 and a half months and 7 and a half months old. The average age of a medium-sized rabbit is 5 months and a half, 5 months for a small rabbit, and 6 months and a half for a large rabbit. In order to increase the breeding rate, some breeders will mate with rabbits that are not sexually mature and have a mating age. The result may not only cause fetuses, weak babies, or undergrowth fetuses, but also the growth and health of rabbits themselves. .

Reasonable age matching.

The so-called age matching is based on the mating age of the two rabbits. It is generally believed that the rabbits in the prime of life have the strongest viability. The species performance of old rabbits declines with age. Young rabbits generally lack mating experience. Therefore, young males and females mated with each other, and the rate of return was low. The born puppies are also weak and the survival rate is not high. Practice has proved that the offspring born to male and female mating have the best viability and production performance. Therefore, in the production practice, the old rabbit should be avoided as much as possible with the aged rabbit or the young rabbit. Young rabbits that are too old or younger than the initial age should be prohibited from breeding. Therefore, under normal circumstances, the young adult male rabbits are equipped with young female rabbits, young male rabbits and old female rabbits.

The double mating is performed about 10 minutes after the first mating and another male rabbit is used for the second mating.

This method can only be limited to the production of commercial rabbits, because it is impossible to determine the father's blood when planting. The repeats were reconstituted with male rabbits 6 to 8 hours after the first mating. Since rabbits are stimulating ovulatory animals, their ovulation time is about 10 hours after mating. Therefore, double matching or repetition can increase the rate of conception, and promote multiple ovulation and multiple pregnancy in females. In addition, we must prevent rough or disturbing in daily management. In rabbits, they are cockroach-stimulated and have a greater stress response to all disturbances than other livestock. Managing rough and severe disruptions is often the main reason for miscarriage and stillbirth. Usually take care when catching rabbits or performing fetus tests.