The mating methods of rabbits include free mating, manual mating and artificial insemination.
Free mating is the polyculture of male and female rabbits, allowing them to freely mate and reproduce. This method was used in past small scale farming and modern ecological stocking methods.
Manual mating is to place the male and female rabbits in their respective cages. When it is necessary to breed, according to their ancestry and performance characteristics, the estrus female rabbits are placed in pre-arranged male rabbit cages for mating and mating. After the end, return the female rabbit to its original cage and record it. This method is currently used by most small and medium scale rabbit farms.
Artificial insemination is the use of collection equipment semen collected semen rabbits, semen and a certain identification and pretreatment, and then semen use of insemination equipment into the female rabbit vaginal breeding methods. This method is adopted by most scaled rabbit farms.
The three methods have their advantages and disadvantages. In the case of artificial guarding and mating methods, it is a simpler and more feasible breeding method and is suitable for domestic rabbit farms, especially small and medium scale rabbit farms with low intensification.
The main procedures for manual mating and care should be as follows:
(1) Make a breeding plan in advance. According to the blood and quality of the male rabbit and the female rabbit, a breeding program is planned for the male and female rabbits to participate in breeding. The breeding program is divided into two types: one is a population matching plan, in which male rabbits and female rabbits are divided into several groups according to blood and quality, and mating is performed according to groups when mating. In other words, any male and female rabbits in the two groups that can be mated can be mated. This method is suitable for large-scale commercial rabbit farms; the other is the individual matching plan, which is based on the blood and quality characteristics of each male rabbit and female rabbit, and it is best to arrange which male rabbit to mate with each male rabbit. Or each female rabbit mates with which male rabbit. This method is suitable for rabbit farms.
(2) Breeding of female rabbit after estrus. Generally two kinds, one is waiting for the female rabbit to breed after natural estrus, suitable for small-scale rabbit farms; one is for the female rabbit group artificial light exposure aphrodisiac, suitable for large-scale rabbit farm.
(3) Conduct health checks on male and female rabbits. Rabbits who are not in the disease period do not arrange breeding, especially reproductive system inflammation, rickets, dermatophytosis, and infectious rhinitis.
(4) Introduce female rabbits to male rabbit cages for breeding. Male rabbits are very sensitive to the environment and cannot change the environment during breeding. Otherwise, they will seriously affect the efficiency and effectiveness of breeding. The female rabbit should be placed in a male rabbit cage. After mating, the female rabbit is taken out and patted on its hips to shrink the vaginal muscles, preventing semen backflow, and then returning to the original cage and recording it.
(5) Bunny cage environmental inspection. Breeding requires a certain amount of space and requires a flat and solid pedal. The rabbit cage should be removed from the excess (such as pot water or feeder), the focus is to check the pedal, any larger gaps, slats should be replaced in time or a piece of wood to prevent pedal clearance The hind limbs cause fractures.
(6) To summarize the effects of breeding. For each batch of breeding, the effect of breeding should be summarized in a timely manner. All those who are effective in breeding should continue to implement the plan. If the effects of breeding are not good, plans must be adjusted in time. The male or female rabbits with low fertility rates were found to find out the reasons.
Pregnancy test is also called pregnancy diagnosis. At present, the method of touching the fetus is commonly used. It is a method of touching the inside of a fetus through the belly of a female rabbit.
It is not only simple but also accurate to use the method of pregnancy diagnosis. To grasp the following points:
1. Time. Begins 8 days after mating.
2. Location. In the female rabbit's cage, if the female rabbit cage is inconvenient, it is best to take the female rabbit out and place it on a flat floor or on a work bench.
3. Techniques. To make the female rabbit head toward the surgeon, the left hand catches the rabbit ear and the neck skin to fix the rabbit, the right hand fingers into the "eight" shape, from the front to the back touch the abdomen, the fetal position on both sides of the abdomen. If the female rabbit has become conceived, the meat ball, such as the size of the peanut, can be touched, and the tentacle slides when it slides. It is not easy to catch the meatball. In half a month, the meat balls connected together, such as the size of a red jujube, can be touched. 18 Days or so. The size of the fetus is as small as a walnut, and the fetal hard head can be felt in 22 days. The fetus becomes long strips. If the abdomen is soft, like cotton, there is no conception.
Dirty tires. According to the author's experience, touching the tire should pay attention to the following points:
First, pay attention to the texture of the blastocyst. 8-10 days blastocyst size and shape are easily confused with the dung ball and should be carefully identified. The surface of the dung ball is hard and rough, inelastic and has no meatball-like sensation. It has a large dispersed area and is connected to the rectum and excrement. Its size and shape do not change with the change of the pregnancy time. The embryo's surface is smooth, elastic, and the hand feels like a non-touching feeling. Hold it in your hand and immediately slip over it. Mostly in a string.
Second, the size, shape, and location of the blastocyst differ depending on the time of pregnancy. On the eighth to tenth days of pregnancy, the blastocysts were spherical in shape and size, such as peanuts, with strong elasticity. They were located in the middle and upper parts of the abdomen, with a relatively concentrated position. The blastocyst was still spherical, like the size of a small red jujube, from day 13-15. Strong elasticity, located in the posterior middle of abdomen; 18-20 days, oval shape of blastocyst, such as small walnut size, elasticity is weak, located in the middle of the abdomen; 22-23 days, was long strips, can touch the hard fetal skull , located in the lower abdomen, the scope of expansion; 28 days later, the fetus's head is clear, 6-7 cm long, full of the entire abdominal cavity.
Third, different parity, body shape, and blastocyst are not the same. In general, the female rabbit has a small blastocyst and is located at the top of the back; the blastocyst of the mother rabbit is slightly larger and the position is lower; the female rabbit with a large body and good nutrition has a faster development and a smaller body. Compared with malnourished female rabbits, the blastocysts were larger; the first born females had smaller abdominal cavities and tighter abdominal walls and should not be touched. The abdominal cavity of the female rabbit is large and the abdominal wall is loose, but the contents are large, and the blastocyst is sometimes not easy to touch. Therefore, careful operation should be performed.
Fourth, the gestational fetus is best done on an empty stomach.
Fifth, gestation should be light, stable and accurate. The so-called light, that is, a light catching rabbits, can not be hard to grasp tough; stable, that is, a steady movement. First place the female rabbit on a flat surface, massage its coat, make it quiet, stop hostile behavior and struggle, and then gently touch; quasi, that is, the norms of movement, the shape of the hand, the position touched by the hand, etc. must be accurate. When you touch the tires, you feel that you are not very sure. You should let the experienced breeder or technician guide you, or go for a few days and wait until the blastocysts are bigger.
Sixth, pay attention to the difference with uterine tumors and kidneys. Although flexible, uterine tumors have a slower rate of growth, usually one. When there are multiple tumors, the sizes are very different, and there are obvious differences from the embryos. When the body size is large and the sensation is poor, the fat around the kidneys is less and the kidneys are sagging. It is easy for beginners to confuse the kidneys with embryos of 18-20 days.
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