Boar training and collection

First, the training of the boar reserve boar suitable for training must be carried out when the body is mature, ie boar 8-10 months of age, weight training 90-120 kg, adult boar as long as the physical health, body condition can be good Artificial spermatozoon training, under normal circumstances, 6% -7% boar tuning is unsuccessful. Do not start training earlier than 220 days old and later than 245 days old. The success rate of tuning will be reduced if it is too early or too late. If the boar's physical condition is not good, sexual desire will be affected and it will be unfair to adjust to normal conditions. Tuning. Second, pre-tune preparations 1. The collection site for boar semen should be conducted on a fixed site, close to the semen examination room, and the training site should be the sperm collection room. To minimize the time for boars to arrive at and leave the training ground, the access of the boar from the lap to the harvesting chamber should be narrow (60-90 cm). The door of the channel should be designed without dead ends, and the pins of all doors should be easy and fast. Open. The venue should be spacious, flat, quiet, clean, well ventilated, and well lit. The floor is not slippery and flexible. An area of ​​9-15 square meters is sufficient. After each use, clean the floor and remove odors. 2. Preparation of fake sows and estrus sows. Install false sows in the training grounds, firmly fix the false sow on the ground, the height and slope should be adjustable (specially introduced by the sow to be introduced in the current breeding equipment), and put it under the false sow A piece of 50 cm 80 cm rubber mat prevents boars from affecting boar libido after boar slipping. An estrus sow should be prepared before the adjustment. The sow should have obvious signs of estrus. In order to ensure the estrus of the sow, the sows can be injected with PG600 3-5 days prior to the adjustment. Adult boars with strong sexual desire can also prepare some urine sows and sprinkle them directly on fake sows to adjust sperm collection. Or other boar semen sprinkled on the fake sow stage to stimulate the boar to crawl across the boar. 3, picking equipment: fine gloves, fine collection cups, gauze, etc. must be clean, generally with fine mining gloves, easy to slip, can not catch the penis or penis easily slide back, most of the use of freehand operation, the operator Cut, polish, cleanse, and disinfect your hands and arms. Keep hands clean and free from contamination throughout the operation. Third, tuning and semen collection methods 1, training before the start of feeding less or not feeding, such as feed has been fed and so on for 1-2 hours and then carried out, a boar to be adjusted into the sperm collection room, let it adapt The environment is a few minutes, and the boar must be treated with gentleness and patience throughout the entire process, but the directive must be resolute to prevent the boar from attacking the trainers. 2, tuning using any of the following methods to repeat 2-6 times to tune the success, if a way can not choose several ways to use. (1) Place a gilt sow beside the fake sow. After the estrus raises the sexual excitement of the boar, the trainer will not allow the penis to enter the sow's vagina. The hand holds the penis in a boxing manner and rhythmically pressurizes, rubbing the glans with his thumb gently, causing the boar to ejaculate. (2) Drive the boar to be groomed outside the sperm collection room and let it witness the boar that has been tuned to cross the fake sow and then induce her to climb the spermatozoa to collect sperm. (3) Applying other boar semen to the hindquarters or both ends of the sow, allowing the boar to be adjusted to approach the false sow for a certain period of time will cause the boar to climb over the boar. (4) Apply the urine of the gild sow to the hindquarters of the gilt sows using method (3). It is also possible for boars to be adjusted to cross a false sow. 3, sperm extraction: after inducing the boar to climb across the false sow, the picker is approaching from the back of the boar. After the boar completely extends the penis, the spermator holds the front of the boar penis by hand. Don't let go, and adjust the tightness of your palm so that you can get more quality semen. When the boar just ejaculates, you have to give up the first part. In order to make the boar more ejaculate, you can ejaculate the boar at the right time. Rub the boar's head with your thumb. The boar ejaculation is divided into 2-3 times. After the first ejaculation, do not let go. Apply pressure to the rhythm. Friction the glans. Soon there will be secondary ejaculation. The reserve boar will ejaculate 100-200 ml each time. Pig 150-300 ml or more. Fourth, pay attention to matters needing attention 1, prior to the extraction of sperm to clean up the abdomen of the boar and foreskin, remove dirt, cut off the fur, squeeze out the accumulation of urine. 2, After the first successful cross-cut test, it should be stimulated several times in succession, and 3-5 times of repeated training form a solid conditioned reflex. 3, training staff must be careful and patience, can not be eager to seek success, can not be rough treatment of boars, in the process of training to protect the genitals of boar from injury, prevent boar collision, trampling trainers. 4. The trainers should be fixed. The best tuning time should be fixed every morning when the boar is energetic. The summer should be carried out in the morning when it is cool. 5. Try not to make natural mating of boars.

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