How to choose and buy Miao pig scientifically?

(agricultural get Rich Network) how to choose and buy Miao pigs scientifically? Scientific selection and purchase of seedlings is a good foundation for lambs. If you want to buy healthy and fast-growing young pigs, experienced farmers have "twelve look" and "six do not buy". Look at the shape of the mouth. The mouth is short and round, large and even, with deep forks, especially a thin jaw. The seedlings that are neat in the lower jaw and maxilla eat more, are not picky, are easy to raise, and grow fast. Two, look at the eyes. The eyes are short, bright, healthy and lively, growing well, most of them are not. Look at the ears and nose. The nostrils should be large enough to match the mouth. The ears are big and thin, the ears are thick and hard, and those with wide distance between the ears can eat long. Look around the neck. Not thick or thin, and has a certain length, can be longer, male appropriate short, fattening pigs should not be too thick. Five, look at the torso. Broad shoulders and backs. The seedling has a high shoulder, a broad back and chest, a flat and straight back, a slightly drooping web, a cucumber belly in the shape of a cucumber belly, exuberant breathing and blood, and rapid growth. Six, look at the tail. As the saying goes, "the tail is like a root nail, it grows one jin a day." The root of the seedling tail is thick, the tail is slightly red, and the tail skin is thin, showing a "T-shaped". It not only grows fast, but also has a gentle disposition. Seven, look at the nipple. Nipples are bright and thin, but not less than 6 pairs. It is best to cross and arrange evenly, sparse in front and dense in later. 7: 6 or 7: 8, and 8: 9 is the most ideal, which has the characteristic of congenital cell division. Eight, look at the limbs. It requires strong, round, straight and thick legs, plump thigh muscles, round and thick toenails, large and obvious forks, moderate ratio of body length to body height, large skeleton and fast growth. Nine, look at the fur. The skin is thin, ruddy and clean, the rib hair is drooping, the coat is neat, and the thin, smooth and shiny seedlings have a good physique and grow fast. If the rough-haired, pale and glossy pigs are mostly pigs and stiff pigs. Ten look at the weight. The weaning of the same litter seedlings, the greater the weight, the faster the weight gain, so it is appropriate to choose and buy heavy Miao pigs, that is, "grab the weight is not light", to facilitate short-term fattening. In full month, the resistance ability of Miao pigs weighing more than 20 jin is stronger than that of less than full month. Look at feces during National Day holiday. Feces are picked out to fall into strips or balls, smooth and loose are healthy seedlings, and the normal color of urine is yellowish. Twelve look at the spirit. Healthy saplings are energetic, stand naturally and walk smoothly. Lift the hind legs of the pig, the pig does not bark or not loud, indicating that the temper is not grumpy, slow to respond to the outside world, and can adapt to the new environment as soon as possible. There is no end to an empty stomach. The belly of the Miao pig is not big, which means that the appetite is not good. Second, do not buy high temperature. Touch the ear root of a young pig with your hand, and most of the hot ones are high-temperature pigs, indicating that they are being made. Three, don't buy diarrhea. This kind of pig has thin dung around its anus and upper hind legs, and the ones with fishy smell are usually pigs. Four, don't buy dehydration. Miao pig dehydrated and listless, yellow urine, drooping eyelids, half-lying but not standing, this kind of pig grows slowly and is easy to give birth. Five, don't buy rotten nipples. Choose a Miao pig in the same litter, preferably choose the first two nipples, and then choose the Miao pig on the penultimate nipple. Six do not buy Eryin is not obvious, poor development, there are foreign bodies excreted. If it is a male for seed use, when watching Eryin, you should also pay special attention to a pair of testes of boars that are obvious, the size is uniform and neat, the vaginal sheath is obvious, and the vaginal sheath should have a few slightly hard obscene hairs. Such genitals are strong in sex and produce more offspring after breeding. The sow's genitals are not deformed.