First, breeding methods

In terms of production, the breeding times for sows in one estrus period are divided into single, repeated, and double allocations. The sows have the characteristics of continuous ovulation. Repeated or double use can increase the conception rate and litter size.

1 single match. Sows are bred with a boar in one estrus. This method is simple and can reduce the burden on the boar. However, due to the long ovulation time of sows, it is easy to reduce the acceptance rate and the number of litters when they are bred.

2. Repeatedly. Sows are bred twice in the same boar during one estrus period, with two breeding intervals of 8-12 hours.

The estrus sow is distributed once or in the afternoon on the morning and afternoon and once again on the morning of the next day. This method can maintain a vigorous spermatozoa at the site of the oviduct sperm-egg binding for a long time, increase the chance of fertilization of the egg, and increase the acceptability rate and the number of litters. Breeding farms are suitable for this type of approach. They can produce more than one baby and have a clear blood relationship.

3. Double match. Sows are mated with two male boars of the same species or different breeds during one estrus period, with a sow interval of 10-15 minutes. Due to two consecutive matings in a short period of time, the sexual stimulation of the sows can be enhanced, the follicles can be matured, the number of ovulation can be increased, and the ovulation period can be shortened. The piglets are born neatly. The continuous breeding of two boars increased the chance of egg selection for sperm, making the piglet robust and strong. Commercial pig farms can use this method.

Second, breeding methods

Breeding methods are divided into two kinds of handed in and artificial insemination.

1. The pay. When there is little difference between sows and boar individuals and no difficulty in mating, they can be rushed to the breeding site without artificial assistance to allow them to freely mate. If there is a large difference between male and female pigs, manual mating is required. You can choose the terrain on the slope. When boar gilts are large, the boars are standing high. When boar sows are on the ground, the sows are standing high. When the boar crosses the sow, the sow's tail is turned to the side to allow the penis to enter the vagina.

2. Artificial insemination. Artificial insemination is the artificial extraction of boar semen. After treatment, the boar is fed to the sow's womb and the sow is conceived. The boar can inseminate 3-8 sows at one time. The use of artificial insemination can reduce the number of boars to feed, save on feed, reduce feed costs, and increase boar utilization. In areas with inaccessible traffic, excellent boars can be fully utilized, and the contradiction between male and female pigs in physical size and mating difficulties can be solved. Improve the beneficial varieties and reduce the spread of diseases.

K1 Pro Version

Heated Tobacco Products,Heated Tobacco Vs Vaping,Heated Tobacco Device,Heated Tobacco Vs Cigarettes

KOKEN Co., Ltd , https://www.hnb-maker.com