(I) Reduce the number of embryonic deaths After the sow became pregnant, the zygote was susceptible to various factors and died at the initial stage of the 9th to 13th day of the planting. The second death peak occurred in the 3rd week after the pregnancy and the 2 deaths accounted for 30% of the total number of the zygote. 40%; The third peak of death occurred 60 to 70 days after mating. Production can be improved by feeding and management to improve the environment of the pig house and minimize the loss of embryos. The temperature of the pig house is maintained at 16-22°C and the relative humidity is maintained at 70%-80%. The amount of feed after mating should be reduced to the original low level, but the full price should be guaranteed. Keep the pens clean and reduce the chance of infection. (b) choose the appropriate feeding method 1. Grab the middle of the two: This method is suitable for poorly sow sows. That is, after 20 days before mating and 10 days after mating, the concentrate is fed. When the body condition is restored, it is mainly fed with green fodder. Feeding is carried out according to feeding standards until 80 days after the pregnancy, and then feeding the concentrate, but the nutritional level in the later period should be higher than the previous period. . 2. Pre-coarse and refined: This method is suitable for breeding sows with good precursors. That is, in the early pregnancy more than feed green fine feed, later feeding fine material. 3. Step-by-step "climb": This method is suitable for sows that are born and the sows that are bred during lactation. In the early stages of pregnancy, Lord, gradually increase the ratio of concentrates and increase the protein and minerals in the feed. Care should be taken to reduce the diet by 10% to 20% in the first week of sow production. (3) Supplying mothers with adequate nutrition The nutrients that the pregnant sows obtain from the diet first satisfy the growth and development of the fetus, then supply their own needs, and store some nutrients for breastfeeding. Therefore, satisfying the supply of nutrients is necessary to ensure normal growth and development of sows and fetuses. Therefore, in addition to supplying enough energy and protein feed for the sows, the pregnant sows need to be provided with sufficient reproductive nutrients. The addition of 1% of the fate can ensure that they meet their reproductive and nutritional needs. (d) Using reasonable feeding techniques The diet fed to pregnant sows, in addition to stressing hygiene and quality assurance, must also have a certain amount of green roughage, so that the sow will feel full after eating, and will not oppress the fetus. Green roughage is rich in amino acids, vitamins and trace elements, which is conducive to the normal growth and development of the fetus. At the same time provide enough water. In addition, it is forbidden to feed mildewed, frozen, poisonous and irritant feeds, otherwise it is easy to cause miscarriage; Feeding green roughage should be less frequently fed, and sows should be allowed to drink clean water at any time. (v) Rearing of the pregnancy About 20 days after the sow is pregnant, the embryo is easily affected by environmental conditions. Special care is required for feeding and management, and high-quality full-priced feed is given. In the last month of pregnancy, on the one hand, the weight of the fetus increases rapidly and requires a large amount of nutrients. On the other hand, due to the increase in the volume of the uterus, the digestive organs are squeezed, and the feed intake of the pig is likely to be insufficient. Therefore, to moderately increase feed nutrient concentration, the prenatal 1 month added the No. 1 for the sow to provide the key reproductive nutrients, and can promote fetal intestinal, immune organ development and weight gain. (VI) Effectively strengthen management The gestating sows are best kept on a single lap and the dough should be flat, dry and clean to keep it cool in winter and cool in summer. The compost pit should be shallow and the slope should not be too steep. During the first month after a sow is pregnant, she should eat well, sleep well, and exercise less in order to restore her strength and sensation. However, her sows should be allowed to exercise more during pregnancy and exercise should be reduced in the later period. One week before labor should stop activities. Rain, snow, or too cold weather should stop exercising to prevent slipping or abortion due to severe contraction of the uterus caused by freezing. It is strictly forbidden to whip the sow, do not drive it away, prevent crowding and make quick turns. If there are signs of miscarriage, progesterone should be injected promptly. (7) Doing preparatory work The cold winter and spring seasons require good weather protection. It is advisable to set up a special delivery room for the sow. The maternity room is required to be warm and dry. The humidity is kept between 65% and 75%. It is comfortable and quiet with plenty of sunshine and fresh air. The temperature is maintained at 22 to 23°C. To ensure the control of temperature and humidity, In the delivery room and on the sow bed, the nursing caress is sprayed to remove the dampness and dehumidify, inhibiting the reproduction of pathogenic microorganisms and reducing the occurrence of diseases. For sows with good lyrical and well-developed breasts, 3-5 days before birth should be reduced, gradually reduced to 1/2 or 1/3 of the feeding level during pregnancy, and the green and blue juicy feed should be stopped. For those sows with poor body condition and poor breast development, not only do they not reduce the material before giving birth, they should also feed some feed rich in protein and vitamins. The sows are rushed to the delivery room 3 to 5 days before delivery, and are ready for delivery and adequate bedding. Double Door Safe Box,Home Safe Box,Ammunition Safe Box,Gun Safe Hebei Tiger Brand Group Jia Bao Cabinet Industry Co. LTD , https://www.cntigersafe.com
How to raise pregnant sows in winter