A rut, identification
Sow vulva corrugation of estrus swelling, mucus become strong pale white, have stared, QiaoWei, upright ears, micturition, back stiff, stunned and external performance. Hand back and ride a quiet pressure standstill, indicates that the sow mating with strong desire, explain the sow has set up a file in WangQi estrus, the most suitable for lose fine.
Second, after buying semen transportation and storage
Buy semen should buy now now lose, safety transportation, keep extend survival time, ensure sperm sperm live rate. The transportation of semen should be preserved three ", that is, to the shock, to avoid light save, will keep temperature control in 15-20 ℃.
Three, timely lose fine
Timely lose fine time. Morning found to have stayed put the reaction sow, lose a fine afternoon, day 2 afternoon again on the second lose accuracy; Afternoon found to have stayed put sows reaction, the morning of the second day lose one, the second day morning on the second lose fine.
Four, lose high technology
1, lose fine preparation. Lose should be fine before sow the genitals rinsing with water, and clean disposable paper towel, prevent fine will lose when bacteria into the vagina.
2, the choice of the vas. Currently use disposable vasectomy, a spiral head type and sponge head type, length of about 50 cm, spiral head suitable for backup sow lose essence, sponge head suitable for the production of the sows lose fine. Choose the sponge vasectomy, attention shall be paid to sponge head whether firmly fixed, not firm is easy to fall off the sow the womb, sponge head had fixed the tips of general 0.5 cm place. In the sponge head had inside cannot contain too much, prevent fine filled too hard to lose when and damage the sow vaginal and uterus. For sponge head too soft to be inserted, sponge head had also contain in too little, too little is difficult to lose fine.
3, lose fine method. Lose fine, first will lose fine sponge head with semen lubrication, so as to facilitate the vas deferens insert, with the hand will sow labia minora separate, will be a bit above the vasectomy along the inclined Angle slowly into vagina, when insert 25 to 30 cm, will feel a resistance, right now, the top already to vasectomy cervix mouth, with the hand to rotate around vasectomy, a little hard, top into the uterine wall 2-3 ruffled place, good heat will sow vasectomy lock, pull back when will feel a certain resistance, at this time to lose it pure. With fine bottle of lost when lose, when insert vasectomy after, will lose with scissors to cut the top fine bottle, had inserted into the fine can be lost. Normal lose fine time natural mating with the average for 3-10 minutes, time is too short, go against the absorption of semen, too long is unfavorable to the work. In order to prevent sperm flow back, lose my fine, don’t rush to pull out the vasectomy, but will lose fine bottle take down, will the vas a sale, insert to cover the semen of bottle inside, such not only can prevent air to access, and can prevent the reverse flow of semen.