Meat breeder selection and breeding techniques

1, the choice of meat breeders. The requirements for meat-breeding dogs are large and well-proportioned, robust in body, rapid in growth and development, strong in libido, high in fertility, strong in disease resistance, and good in tune-up performance. Yellow and white dogs are generally preferred, followed by canines and black dogs. When asked for, the head shape is correct, the nose is moist and cool, the teeth are neat, the shoulder muscles are plump, the back is straight, the chest is deep and wide, the ribs are open well, the buttocks are slightly higher than the shoulders, the hips are full, and the abdomen is tight. Straight and drooping, with strong limbs. When selecting a bitch, it requires more litter size, higher milking power, gentle temperament, good motherhood, and strong motherhood; choosing a male dog requires strong sexual desire, rapid growth, large body size, strong disease resistance, and good dog training performance. For the father, such as the Chinese Tibetan mastiff, Japanese Wolf Green, German Shepherd and so on. This can give full play to the advantages of hybridization, increase production levels and increase economic efficiency.
2, breeding habits of dogs. (1) Meat dogs are seasonal breeding animals. Each year is limited to estrus in the spring and autumn. Therefore, it is necessary to seize the season and provide timely breeding. (2) The dogs have multiple fertility and strong fertility. There are 4-6 litters per birth, and the large dogs have as many as 10 litters per litter. As long as you master the reproductive technology, you can fully develop the reproductive potential of meat dogs. (3) The gestation period of meat dogs is short, generally 58-64 days, with an average of 62 days, which is 1/2 and 1/5 shorter than those of pigs and cattle. Therefore, bitches are rich in nutrients and care should be taken when nursing. (4) Newborn puppies have weak activity, imperfect development, and no independent living ability. Newborn puppies belong to early adulthood, but do not blink, relying on bitches for care. A slight negligence will result in death. Therefore, the care of puppies should also be particularly meticulous.
3, meat dog estrus and breeding (1) estrus: bitch sexual maturity is generally 8-12 months, depending on the region, breed, body size varies. The small size of 6-8 months, 10-12 months of sexual maturity. In general, the second estrus is best for breeding. Because the bitches are mature, some organs of the body are not mature yet, so sexual reproduction should not be performed immediately after breeding so as not to affect the reproductive performance. In general, bitches are in heat in the spring from March to March and fall from September to November. The estrus manifested itself as excitement, love, irritability, love, loss of appetite, raising the tail of the arch, frequent urination, flushing and swollen vulva, and early outflow of red mucus accompanied by blood, like to approach a male dog.
(2) Breeding: The common bitch's estrus duration is 7-14 days. Ovulation begins 48-60 hours after estrus. The vulva secretions turn red from red and colorless and transparent. They are willing to accept cross-breeding. This period is the best mating. opportunity. After 24 to 48 hours, repeat the mating again. The mating environment should be quiet to prevent the bitch from being surprised and refuse to mate. Male penis is inserted into the vagina soon after ejaculation, and the phenomenon of vaginal contraction of the penis bulbous cavernous congestion occurs. Male and female dogs are in tail-to-tail position and can be released after 15-20 minutes. Don't be alarmed before loosening, and leave for 15-20 minutes before leaving.

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