First, increase sow use intensity and increase the number of births per year

The only factors that can be adjusted to increase the number of litters per year are only early weaning and early estrus after weaning. Now we usually use 28 to 35 days of weaning to allow the sow to produce 2.2 to 2.3 litters a year. Weaning takes place 14 to 21 days abroad, and the number of nests per year can reach 2.5 to 2.7 litters. Ensuring that sows have heat within one week after weaning is another factor in increasing the number of nests per year.

1. The control of body weight, the difference between the weight of the sow before and after weaning is controlled within 10 to 15 kilograms, and the estrus will occur as soon as possible after weaning;

2. Shorten the period of breast-feeding, implement early weaning, increase the rate of conception, shorten the interval between estruss;

3. After weaning, the sows can be rushed to the boar to stimulate the heat. If necessary, gonadotropins can be used to arouse the feelings. Prolonging the illumination time is also an effective measure to speed up heat and increase ovulation.

Second, increase sows' birth rate and increase the number of live piglets

1, control the initial match age. Under normal feeding conditions, the initial age and weight of the sows were: 8 to 10 months of introduction, 80 to 90 kg in body weight, 6 to 8 months in local breeds, and 60 to 70 kg in body weight.

2. Improve the fertility rate of pigs on the premise that the semen quality of the boar is better, microscopic examination after selection of fine boars is performed, sperm motility above 0.7 can artificially inseminate estrus sows, can increase fertility rate, and increase litter size Head count.

3. Reduce embryonic death, provide full-priced nutrition reasonably for three death peaks (in the initial stage of mirror attachment on the 9th to 13th days of fertilization, the third week of pregnancy, and the 60th to the 70th day of fertilization), and do not feed mildew, frozen and toxic feed , Reduce the impact of environmental stress and embryonic death, and strive for more productive live pigs.

Third, control the nutritional level during pregnancy and strengthen management during pregnancy

1. For pregnant sows should be established before the low and high nutritional level, that is, to reduce the amount of feed during pregnancy, so that pregnancy weight gain control in 30 to 40 kg.

2, pregnant sows should be appropriate activities to enhance physical fitness, prevent crowding, reduce stress stimuli, prevent stillbirth and miscarriage, do a good job of preventing heat and cold work, reduce embryonic death.

Traditional Wound Care Products

Traditional Wound Care Products,Disposible Gauze Swabs,Disposible Bandages,100% Cotton Bandages

Zhende Medical Co.,Ltd , https://www.zhendemedicals.com