The fertility rate of the female rabbit is directly related to the level of production in the rabbit farm and the economic efficiency. To increase the female rabbit's fertility rate, it is important to do the following work well: 1. Strengthen seed selection. To choose healthy and disease-free, strong sexual desire, but fat or too thin female rabbits for planting, where ovarian cysts, uterine hypoplasia or suffering from other reproductive tract diseases must be eliminated. It is best to keep the breeding pups selected from 3 to 5 of the excellent females, and the nipples should be more than 4 pairs. Pups with fewer litters, low conception rates, poor maternity, and poor lactating performance cannot be used for breeding. 2, select the appropriate season for breeding. Although rabbits can breed all year round, they are best in the spring and autumn, when the temperature is appropriate, the meat rabbit has a strong appetite, reproductive function is active, and the conception rate is high. 3, timely breeding. Attention should be paid to observing the estrus performance of the female rabbit: excitement, jumping in the cage, drowsiness, loss of appetite, frequent lifting of the tail across other rabbits, active approaching male rabbits, swelling of the vulva, wetting, dark red, and breeding at this time Most suitable. The female rabbits can be placed in male rabbit cages for mating, and the female rabbits are lifted in time after mating, and tapped two times by hand to cause vaginal and uterine contractions to prevent the outflow of semen. The weak sperm viability of breeding male rabbits can inject oxytocin into female rabbits to increase the conception rate. 4, repeated breeding. Under normal circumstances, as long as the female estrus is normal, male rabbits have good semen quality and can gestation at one time. However, in order to ensure that the female rabbits become pregnant and prevent false pregnancies, the same male rabbits can be used to repeat mating once every 6-8 hours after the first breeding. The purpose of the first mating is to stimulate the ovulation of the female rabbits. The purpose of the second mating is formal fertilization. Tests have shown that the rate of conception of repeated breedings can reach 95%-100%, and the number of litters is 6-8 per litter. 5, double mating. One female rabbit was continuously mated with two male rabbits of different kinships, and the interval between them was not more than 20-30 minutes. The purpose is to use different male rabbit's sperm to compete with one another to increase the egg's selectivity. At the same time, the fertilized egg acquires his spermatozoa as a nutrient, and the pups have strong viability and high survival rate. Tests have shown that the rate of conception with double mating is 25% -30% higher than that of the control group, and the number of litters is increased by 10% - 20%. 6, frequent breeding. Frequent breeding, also known as "blood allocation," most rabbit farms are weaned at 40-45 days of age, and then re-breeding, so only 3-4 births a year, reproduction is very slow. With frequency-reproduction methods, even if the female rabbits are pregnant, lactating, and gestation at the same time during lactation, they can breed 8-10 tires per year. After maternal blood mating, due to breastfeeding and pregnancy at the same time, the demand for nutrients is quite large, and the quantity and quality of feed must meet the needs of the female rabbit itself and lactation and fetal growth and development. 7, increase the light. Although meat rabbits do not require light, but lack of light can significantly affect reproductive performance. According to the experiment, under the ambient conditions of 20°C-24°C and sunny weather, 1 watt of light per square meter is supplemented for 2 hours. Although the female rabbit has certain fertility, the conception rate is very low, and the conception rate of one breeding is only 30. %about. If the increase of illumination by 15 watts per square meter of light time is extended by 12 hours, the fertility rate of one breeding can reach about 50%. Under the same light intensity, if the continuous irradiation for 16 hours, female fertility rate of up to 65% -70%, the survival rate of puppies can also be significantly increased. Therefore, increasing the illuminance and time can significantly improve the fertility rate of female rabbits and the survival rate of pups.
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