Meat rabbit breeding is a breeding category that has been ignited in recent years. It is popular among consumers because of its unique appearance and unique meat quality. Its breeding method is simple, the breeding cost is low, and it has a good breeding prospect. So how do you improve the reproductive capacity of the meat rabbit? It is understood that many people will carry out artificial insemination in order to improve the birth rate of meat rabbits. Here are the detailed culture management techniques for it. You can refer to it. 1 supporting equipment (1) Semen collection equipment: plastic cup, collecting cup, rabbit rubber false vagina, vaseline. (2) Microscopy equipment: microscope, glass slide, coverslip, lens paper. (3) Insulation equipment: constant temperature water bath (35 ° C -38 ° C, guaranteed to remove the temperature of semen), constant temperature oven, dual refrigeration electronic refrigerator (can be adjusted according to needs, semen insulation transport). (4) Diluent: Semen dilution powder, diluted with double distilled water. (5) Insemination equipment: rabbit insemination gun, insemination gun casing. (6) Others: equipment such as distiller, alcohol cotton, thermometer, etc. 2 kinds of rabbit preparation 2.1 female rabbit preparation A female rabbit should be treated with aphrodisiac before breeding. The aphrodisiac method is as follows: First, the rabbit house is illuminated. The intensity is that after turning on the light, the handle can be placed in the rabbit cage to see the palm print. The time is more than 18 hours per day. Aphrodisiac (aphrodisiac or pregnant horse serum). The primiparous female rabbits are fed with aphrodisiac loose ingredients before breeding (1 pack of aphrodisiac loose mix 20kg feed), and the ray is continuously supplemented for 3-5 days. When the female rabbit is red, the breeding is carried out. Female rabbits are produced: 23 days after birth, the female rabbits are continuously supplemented with light for 5 days until the rabbits are weaned. The pregnant rabbits are injected with pregnant horse serum gonadotropin on the day of weaning, 0.3 mL/injection, within 2 days after injection. Observe the vulva of the female rabbit and breed when the vulva is red. 2.2 Separator preparation The sperm collector includes a plastic cup shell, a rabbit rubber false vaginal inner tube and a collecting cup. Put the collecting cup into the hole of the inner tube, and then insert the inner tube into the outer casing, and the collecting cup exposes the outer casing, and the opening of the collecting cup at the other end is turned over on the outer casing and tightly fastened so as not to leak water or Breathable and sterilized. Then, warm water of 50 ° C was slowly injected from the back of the casing. After the sperm collector is ready, put it into a dual-refrigeration electronic refrigerator at 54 ° C, and then bring it into the rabbit house to prepare for semen collection. 3 semen collection 3.1 Grab the rabbit Select a healthy and vigorous male rabbit, the left hand grasps the female rabbit's ear and neck skin, the right hand takes the fake vagina and the collecting cup on the fake vagina, and extends to the belly of the female rabbit. 3.2 Semen collection After the penis of the male rabbit enters the fake vagina, it will move forward a few seconds after the twitching, and the rear-wheel drive collapses to the side, with a bang, indicating that the ejaculation is completed. The sperm collector immediately raises the mouth of the fake vaginal opening, allowing the semen to flow into the collecting cup. Then quickly take the semen from the belly of the female rabbit, vertically collect the sperm, remove the collecting cup, and put it into the 36 ° C dual-refrigerated electronic refrigerator. Make a record, to be tested and diluted. 4 Semen testing 4.1 Inspection Immediately after the collection, the double-refrigerated electronic refrigerator was returned to the laboratory, and the collecting cup and the test tube rack were placed in a constant temperature water bath of 36 °C. Take a dry and clean slide, apply a drop of semen to the slide with a plastic dropper, and perform a microscopic examination under a microscope of 160 times. 4.2 Quality Inspection First, the appearance observation: visual observation of semen color (normally grayish white or milky white), semen turbidity (like cloud rolling indicates great vitality, high density), smell (no odor); second, microscopic observation: observe sperm motility, When the activity check, the semen should not be too small, the semen is too small and easy to air dry. Add 1~2 drops of semen on the slide, add a few drops of dilution, observe the sperm movement, and ensure that there are more than 3/5 sperm in the sperm. Forward movement can be used for semen dilution and insemination. 5 Semen dilution 5.1 dilution factor Select the appropriate dilution factor based on the measured sperm motility score. 5.2 Preparation of semen diluent Take a packet of semen diluent powder and dissolve it completely in 100 mL of double distilled water. The temperature of the double distilled water is 36 ° C, and the container containing the diluent is rinsed with double distilled water, and then it can be washed again with double distilled water (double distilled water must be boiled for a long time to remove carbon dioxide and maintain the pH value of the water). 5.3 dilution Drain with a glass rod and slowly transfer the prepared semen dilution into the semen along the wall of the collecting cup, then gently shake it. 5.4 Save It must be used now, and the time from semen collection to insemination should be shortened, which can effectively increase the chance of conception. 6 insemination 6.1 Grab the female rabbit The two cooperated, the assistant grasped the mother's ears and the neck skin with one hand, put the female rabbit on the insemination car, and the other hand held the female rabbit's back. The left thumb of the insemination and the remaining four fingers grasped the tail of the female rabbit and lifted outward, and the hindquarters of the female rabbit were suspended and the vulva was fully exposed. 6.2 Insemination techniques The intruder holds the gun right, uses the gun head to open the vulva of the female rabbit, and moves down the vaginal back. When the resistance is encountered, the insemination gun retreats and then tentatively advances, adjusts the angle of the gun head, and the head of the female rabbit Next, the first matching female rabbit head up, a little hard to pass. Insert a suitable depth of 12-14cm, the rabbit is a double uterus animal, too deep and easy to unilateral uterus conceiving, too shallow sperm can not reach the fertilization site. 6.3 Completed insemination After losing the fine, slowly pull out the insemination gun and pat it on the hindquarters of the female rabbit. Re-injection of 0.5 μg of No. 3, which was diluted with physiological saline, stimulated the ovulation of the female rabbit. 6.4 Precautions (1) Avoid forced insemination: When the female rabbit is struggling, the back waist is arched, the hind limbs touch the object, and the hind limbs cannot be forced to insemination, so as to avoid the technical exchange of the female rabbit into damage. (2) Strict disinfection: Before injecting the semen, clean the semen with the semen dilution solution, then pour the semen dilution into the semen, only pour 20mL at a time, reduce the UV, temperature and shock during the insemination process. Damage to semen. In the front of the insemination, the air inside the gun is exhausted, and one vas deferens is used only for one female rabbit. (3) Reducing semen oscillation: During the process of insemination, the semen oscillate is reduced. When the CO 2 overflows in the semen, the O 2 dissolves in the semen, which increases the sperm activity, consumes sperm energy, and accelerates sperm death. (4) When the semen is diluted in the operation room, the staff is strictly prohibited from smoking, and the smoke has a great lethal effect on the sperm . 7 Management after insemination 7.1 Keep the rabbit house quiet After the completion of the fine, in order to better let the female rabbits become pregnant, all personnel must withdraw from the rabbit house to create a quiet and comfortable environment for the female rabbit. In the feed before the insemination and before the semen, it is necessary to ensure sufficient water. 7.2 Female rabbits After insemination, the light was still kept for 18 hours every day until the female rabbits were touched, and the female rabbits were tested for 12 to 15 days after breeding to confirm whether the female rabbits were pregnant. Artificial insemination can effectively increase the amount of litter in meat rabbits, but it is necessary to master certain artificial techniques. The above are the management techniques for artificial insemination of meat rabbits. Please hurry and find out. Corn Seed,Seed Corn,Maize Seed,Sweet Corn Seeds XIKE AGRICULTURAL GROUP CO . .LTD. , https://www.laoseed.com
