The cold weather in winter and spring and the short sunshine time have adversely affected the normal growth and development of pregnant sows, and attention should be paid to strengthening feeding and management.
First, reduce the number of embryos died. After the sow became pregnant, the zygote was susceptible to various factors and died in the initial period of the 9-13 days. The second death peak occurred on the third day after pregnancy. The two deaths accounted for 30-40 of the total number of zygotes. %; The third peak of death occurs 60-70 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 full-price quality should be guaranteed; keeping the house clean and hygienic in order to reduce infection Opportunity.
Second, choose the appropriate feeding method. Generally, the following three methods can be used: One is to grasp the middle between the two, this method is suitable for the poor 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. . The second is rough after the fine. This method is suitable for mating sows with good precursors. That is, in the early pregnancy more green feed, and later feed fine material. The third is to climb up step by step. This method is suitable for the production of sows and breeding sows during lactation. That is to say, in the early stages of pregnancy, mainly the roughage, gradually increase the proportion of concentrates, and accordingly increase the protein and minerals in the feed. However, care should be taken to reduce the diet by 10% to 20% in the week before the sow is born.
Third, supply mothers 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 sows, it should also ensure that Vitamins And Minerals are met.
Fourth, the use of reasonable feeding technology. The diets fed to pregnant sows, in addition to hygiene and quality assurance, must also have a certain amount of green roughage, so that sows can feel full after eating, and they will not oppress the fetus. Green roughage is rich in amino acids, vitamins and traces. Elements are conducive to the normal growth and development of the fetus, while providing adequate drinking water. In addition, it is forbidden to feed mildewed, frozen, poisonous and irritating feeds, otherwise it is easy to cause miscarriage; at the same time, feedstuffs are not to be changed at will. Feeding green roughages should be fed less frequently, and sows should be allowed to drink clean water at any time.
Fifth, feeding before and after 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, the fetus’s weight increases dramatically. Need a lot of nutrients, on the other hand due to the increase in the volume of the uterus, digestive organs are squeezed, easily lead to insufficient feed intake of pigs. Therefore, nutrient-rich diets, especially protein feeds, should be fed.
Sixth, strengthen management. The focus of management of pregnant sows is to do a good job. In the daily management should pay attention to the following points: (1) pregnant sows best single-circle feeding, the dough should be flat, dry and clean, keep cool in winter and cool in summer. The compost pit should be shallow and the slope should not be too steep. (2) Within 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, she should exercise more during the second trimester, and she should reduce the amount of exercise so that her sows can move freely during the second trimester. Activities should be stopped 1 week before childbirth. (3) In the rain, snow or too cold weather, exercise should be stopped to prevent slipping or abortion due to severe contraction of the uterus caused by freezing. (4) It is forbidden to whip, cross the ditch to cross the gate more slowly, prevent crowding and rapid eviction, sharp turn and so on. (5) Progesterone should be injected promptly if there are signs of abortion.
7. Prepare prenatal preparations. 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 must be warm and dry, the humidity should be maintained at 65-75%, comfortable and quiet, with plenty of sunshine, fresh air, and a temperature of 22-23°C. For gilts with well-developed 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 green-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 sow is rushed to the delivery room 3 to 5 days before delivery, and is ready for delivery and adequate litter.
To increase Animal Nutrition; mainly used to supple the body needs such as a variety of vitamins, minerals, increase the body disease resistance and immunity.;Mainly including injection .powder.tablet.solution,stc.Usually used in the form of injection or oral,ntravenous injection, intramuscular injection, subcutaneous injection, etc.used in Horse, cattle, sheep, pig, dog, cat and rabbit.
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Animal Nutrition Medicine,Animal Nutrition,Nutritional Supplements,Chicken Nutrition
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