Knowledge about breeding of Tibetan mastiff

1, male and female mastiff body condition is quite different auxiliary personnel squat on the left rear side of the female mastiff, left hand to grasp the tail and left hind leg knee of the female mastiff, right hand to hold the female mastiff vulva, according to the angle of penis insertion properly adjust the female mastiff vulva up and down, so that the male mastiff penis and female mastiff vagina are at the same level position, forming a "space alignment" until breeding is successful. When the female mastiff body is small and the male mastiff body is large, a convex and concave place should be selected in the breeding field to make the female mastiff hind limbs stand on the convex place. A thick wooden board can also be laid on the flat ground of the breeding field to make the female mastiff hind limbs stand on it. After fixing, the male mastiff will mate. If the body condition is too different, the female mastiff's hind body should be supported by hand or left knee to prevent it from being overwhelmed. On the contrary, if the male mastiff is small and the female mastiff is large, fix the female mastiff in the recess or block board to make the male mastiff stand high and ensure its space alignment.

2, the male mastiff timid or low sexual desire for the courage of the male mastiff, one is to be matched with female mastiff into the male mastiff house, male mastiff in their own house generally has a relatively high sexual desire; second, the male mastiff first lead to a very quiet breeding ground, and then the female mastiff lead into the breeding ground, surrounded by no one to watch, so that you can successfully complete mating. For male mastiff with low sexual desire, before breeding, make female mastiff stand still, technician pulls male mastiff to walk around female mastiff, and makes it smell the special smell of female mastiff, when it is interested in female mastiff, pull male mastiff to female mastiff side, when male mastiff licks female mastiff vulva, slowly pull female mastiff away, so as to arouse male mastiff's sexual desire; for male mastiff with climbing behavior, but low sexual desire, when climbing, restrain male mastiff, make it climb empty several times, trigger its sexual desire. Although a breeding after several trials, are not successful, should first let the male mastiff rest for a while, and then move the female mastiff position, stimulate male mastiff sexual desire. At the same time, for timid, low libido male mastiff to strengthen exercise, timely find the reasons for low libido.

3, nerve type strong and neurotic female mastiff excitable female mastiff before breeding should wear a mouth cage or with a rope tied to the mouth, to prevent biting male mastiff; for old and unmated female mastiff, long years do not exercise and touch female mastiff, usually show special neuroticism, in estrus also afraid of male mastiff mating. The skin is particularly sensitive during artificial mating. Due to excessive contraction of the pudendal dilators and vaginal muscles, it is difficult for the male mastiff to insert the penis to complete ejaculation. For such mastiff, 5ml of 2% procaine can only be injected into the upper part of the pudendal region and the deep muscles on the left and right sides before mating. After 15~25 minutes, the extensor muscles of vulva and vaginal muscles are not contracted by finger inspection, and then the mating species is carried out. This method does not affect the conception rate and litter size.

The best breeding period is the key to improve conception rate. The best breeding time must be calculated according to the female's estrus period. The first day is when the female dog's vulva is obviously swollen, flushed and the first drop of blood is seen. The 9~13 days are the best mating days. At this point, the blood secretions from its vulva become thin and the labia soft. The best mating date can also be determined according to the color change of its vaginal secretions, that is, the color of vaginal secretions changes from red to straw-like yellow for 2 to 3 days. At this point, its labia soft, the original vertical state of the vaginal vestibule becomes flat. There are a few female dogs, due to hormone secretion imbalance, in proestrus or estrus no blood secretion from the vagina; some female dog blood secretion has been able to continue to the end of estrus, and even can continue to estrus for several days. For such female dogs, it is not possible to determine the breeding date by observing vaginal bleeding alone. Male dogs can be used for testing. The best breeding period is 1~3 days after the female is willing to accept male dogs. Generally, for every 2 years of age or 2 litters of bitches, first mating occurs 1 day earlier. Tibetan mastiff breeding-scientific breeding to adopt scientific breeding, can improve the fertility rate, each litter can be born 8-12, more than 15.

In general, from the female dog vaginal outflow of the first drop of blood within the 10-13 days is the most suitable breeding period. But also because of the dog individual and advance or delay. Accurately judge the best breeding time of the female dog can be judged according to the following external behavior characteristics: first, vulva swelling, softening, outflow of mucus becomes light, blood drops reduce or stop; second, press the waist of the female dog or stroke the tail, the dog stands still, the tail is raised to one side; third, the female dog actively approaches the male dog, when the male dog climbs, the female dog actively steps down the waist, the buttocks face the male dog, the tail is biased to one side, the vulva frequently opens and closes, allowing mating.

Second, the principle of selection and selection of male and female dogs with common advantages for mating, male and female dogs with the same shortcomings can not mate; the most ideal is strong age with strong age, strong age with old age; inbreeding is prohibited.

Third, the breeding method repeated breeding: in a female estrus period, in the same male dog has been matched twice, the first time after the breeding interval of about 24-48 hours to match again, so as to improve the conception rate of the female dog. The practice shows that the conception rate of only one mating is 58%, that of two mating is 72%, and that of three mating is 83%. The repeated mating method can increase the litter size without confusing the blood relationship. Double mating: In one estrus of the female, two males mate with one female one after another, with an interval of about 24-48 hours. With 2 male dogs mated twice, when mated with the second male dog, can cause the female dog to supplement the reflex sexual excitement, so that the female dog more litters. This method is often used in breeding meat dogs, which can obtain multi-breed heterosis and improve growth advantage.

4. Breeding precautions 1. Breeding time is generally morning, the best time for mental state, winter is at noon, when the weather is warmer. 2. Feeding is not allowed before mating and within 2 hours after mating to avoid reflex vomiting during mating. 3. Breeding is best selected in the place where the female dog is raised. When the male and female dogs mate, it is a stimulus to other female dogs, which can promote the female dog to estrus at the same time and facilitate feeding management.