Pig farmers pay attention, teach you a few tricks breeding pig on-site shopping skills, not afraid to buy "bad pig"!

Breeding pigs are divided into two kinds: boars and sows, which are male (breeder boar) and female (breeder sow) parent pigs in domestic pigs. So the quality of breeding pigs is determined by the quality of the next generation of piglets. Let's talk about the skills of on-site selection and purchase of breeding pigs and how to buy good breeding pigs. The vast number of pig farmers have to look carefully.

I. in line with the characteristics of the variety

Breeding pig production is mainly the production of purebred pigs, so the breeding pig breeds required to be selected have obvious characteristics, which are in line with the main characteristics of this breed (for example, when you encounter a straight-ear Duroc, you should give up decisively). At present, the mainstream breeds of breeding pigs in China are Landrace, Landrace and Duroc, and Petrand also has a certain share.

2. Ideal body structure and good health

The body structure of breeding pigs requires a straight back, strong limbs, square and strong hooves, symmetrical body parts, long and deep body. The requirements of body shape and appearance of breeding pigs for different uses are slightly different. for example, for patrilineal breeding boars, in addition to the overall requirements for breeding pigs, they are also required to be physically strong and sturdy, while for maternal breeding pigs, it is more required to have a well-proportioned individual, reasonable structure and strong coordination.

Third, have ideal external genitalia

The reproductive organs of breeding pigs are closely related to the reproductive performance of breeding pigs, and the reproductive organs of breeding pigs are also heritable traits. Therefore, the testes of breeding boars are required to be large and symmetrical on both sides to prevent prepuce effusion and soft whips that affect the breeding behavior of boars; the selection of sows requires moderate size of the vulva to prevent small vulva, upward warping vulva, these vulvar performance often indicates that the reproductive performance of sows is relatively low, there will be some reproductive obstacles.

IV. The structure and quantity of nipples meet the requirements

The ventral line (nipple and breast) of breeding pigs is closely related to the reproductive performance of breeding pigs, especially the lactation ability and lactation ability of breeding pigs. The number of effective nipples of breeding pigs is generally 6-7 pairs, the structure requires moderate size, and evenly arranged on both sides of the ventral line, and the space distance between nipples is uniform and sufficient. Prevent abnormal nipples such as blind nipples, small nipples, inverted nipples, inverted nipples, etc. The requirements for the evaluation of the ventral line of maternal breeding pigs are more stringent, the lactation performance of breeding pigs with good ventral line will be better, and the sows with more nipples will have more offspring. For paternal breeding pigs, the conventional ventral line evaluation can meet the requirements of on-site breeding. There is no rigid requirement on the number of nipples for parents to breed boars that are used to produce commercial pigs.

Fifth, have a well-developed limb and hoof structure

The overall requirement of the leg and hoof structure of breeding pigs is that the limbs take a natural posture, showing a natural posture of walking, and preventing the limb structure of bad structures such as lying and bending legs. The ideal forelimb should be a straight line from the shoulder to the hoof with an angle at the knee. Defective limb types such as O-shaped or X-shaped legs should be prevented, and the department should naturally have a certain curve to prevent the department from excessively upright to form a hoof-tip walk, and at the same time to prevent the department from overlying and forming a recumbent system. The ideal hoof should be a uniform toe, normal shape, reasonable position and no excessive cracks between the two hooves. Prevent defects such as uneven toe, too large gap between two hooves or too long hooves.

VI. No genetic defects

Attention should be paid to the birth records, but should not be selected if there are hereditary defects such as umbilical hernia, scrotal hernia, cryptorchidism, single testis, anal atresia, impure coat color, inverted nipple, bisexual pig and so on.

It should also be noted that there are some misunderstandings in the selection of breeding pigs, which often cause economic losses, or even introduce diseases, resulting in the destruction of the whole army.

1. Ignore the health status of the selected breeding pigs.

2. Put too much emphasis on physique

3. Overweight or underweight is required.

4. Introduction from several pig farms.

Before the selection and purchase of breeding pigs, the introduction farm should have an isolation house. The isolation house should be thoroughly cleaned and disinfected 30 days (at least 7 days) before the breeding pigs arrive, and the disinfection effect should be tested. There must be a pig loading platform, and pig transport personnel can unload pigs into the yard without entering the yard.