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In the first 20 days after the pregnancy, the raising sow should be given special care in feeding, giving high-quality full-rate feed, and feeding 1.5-2.0 kg per day, which can guarantee embryo implantation, reduce stillbirth, and increase production. Numbers. From the 4th week to the 80th day of pregnancy, low-energy and low-protein feeds should be fed. Generally, the crude protein is lower than 14%, the digestive energy is 3000 kcal/kg, and the daily feed is 1.8-2.3 kg. At this time, the sows should be suitable. Lyricism.
Feeding methods can be used in the following three ways: First, to grasp the middle of the two, this method is suitable for mating sows with poor body condition at the time of mating; Second, the former rough after the fine way, this method is suitable for good body condition The sows are produced; the third is the step-by-step method of climbing. This method is suitable for sows that are born and the sows whose fertility is particularly high.
Nutrition requires that pregnant sows obtain nutrients from the diet, first to meet the fetus's growth and development, and then to supply their own needs, and to stock up some nutrients for breastfeeding. Therefore, in addition to supplying enough energy and protein feed, the supply of vitamins and minerals should also be guaranteed.
Feeding Technology The sow diet must have a certain amount of green roughage, so that the sow will feel full after eating, and will not oppress the fetus. The 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 sufficient drinking water.
In the second trimester of pregnancy, from the 80th day of pregnancy to the farrowing period, on the one hand, the weight of the fetus increases dramatically 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 it is easy to cause pigs. Insufficient food intake. Therefore, sows should be fed high-energy, high-protein diets, or they can start feeding lactating sow feeds, generally more than 16% of crude protein, digestive energy greater than 3100 kcal/kg, and daily doses of 2.3–2.8 kg.
Pay attention to the temperature in the piggery is 18 °C -23 °C, winter early spring should be warm and damp, summer should be to prevent heatstroke, it is strictly prohibited inside the house high temperature, high humidity, icing, slipping, to prevent miscarriage.
Carefully manage pre-pregnancy with a small group of 3-5 heads to raise, but must be raised in a single circle in the later period. The dough should be flat, dry and hygienic, sunny, and the pigs should be regularly disinfected; within the first month after pregnancy, let Sow less exercise, exercise should be appropriate during the second and third trimester of pregnancy, stop exercise before labor, this is conducive to promoting sow health, fetal growth and development of postpartum lactation and improve the ability of sows; to ensure feed quality, must not be fed mildew, deterioration, frozen Or toxic feed to prevent stillbirth and miscarriage; In short, to be careful in management to prevent mechanical abortion, if there is abortion omen, progesterone should be injected, pregnant sows should also be injected before the injection of yellow piglet vaccine piglets, piglets In the case of vaccines such as Hung Hom vaccine and pseudorabies, pigs were found to be diagnosed and treated in time.
Prenatal preparation is best to set up a special delivery room for the sow, the production room requires warm and dry, comfortable and quiet, sunny, if the sow need to change the real estate Aberdeen, in the prenatal 5-7 days should be sows into the delivery room, easy The sow is familiar with the environment, and at the same time pays attention to the brushing of the breasts and the vulva. For sows with good pubic 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 Stop feeding green and blue juicy feed. 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.
Feeding and management of pregnant sows
The quality of gestation sow feeding and management is directly related to the growth and development of the embryo, the number of litter size, the birth weight, the survival rate of the piglet, the daily gain, the milking force, and the estrus breeding of the next cycle. Therefore, the following points should be made: