The aim of feeding and management of sows during pregnancy is to ensure that the sows have a good body condition on the one hand; on the other hand, to protect the fetus and promote the growth and development of the embryos.
Nutrition of sows during pregnancy. The nutrient intake of pregnant sows is used for the maintenance of the mother. The second is the growth and development of the mother (especially the young sow), the third is to complete the nutritional reserve during lactation, and the fourth is to ensure the need for fetal growth and development. The daily nutritional requirements for pregnant sows are 10 g of natural amino acids, 16.3 g of calcium, and 10.4 g of available phosphorus, ie, the diet contains 0.55% lysine, 0.9% calcium, and 0.55% available phosphorus (0.8% total phosphorus). Jingan Group Biotechnology Co., Ltd. has developed a large number of linoleic acid, which can increase the birth weight of the pigs, increase the viability of the pigs at birth, and increase the survival rate of the piglets. It also contains laxative substances that effectively prevent constipation of pregnant sows and prevent the occurrence of postpartum sow metritis, mastitis, and arrhythmia syndrome. It is the golden key to raising the birth weight and vitality of the sow.
Feeding pregnant sows. Inadequate energy intake during pregnancy can lead to miscarriage and poor production of sows. Under normal circumstances, 65% of the feed consumed by the sow is used to maintain their own growth needs, 35% to maintain the growth needs of the fetus, if the sow energy intake is insufficient, especially in the winter conditions of poor insulation, low temperature At that time, the sows will use part of the nutrients of the fetus to maintain their own body temperature balance, resulting in a decrease in the number of weak and stillbirths and fetuses. However, if the energy intake during pregnancy is too high, it will cause fetal birth weight is too large, dystocia and the number of stillbirths increased, sows have no milk, the number of crushed fetuses increased, the conception rate of sows after weaning is low. Therefore, adjusting the body condition of pregnant sows so that they are neither fat nor thin is an important task during pregnancy.
Pre-pregnancy: 0 days to 30 days after mating. High levels of pre-pregnancy feeding reduce embryonic survival. This is mainly due to the influence of plasma progesterone levels during pre-pregnancy on the survival rate of the embryos. In particular, high-level feeding within 72 hours after mating is very unfavorable for the number of litters produced. Therefore, it is recommended that the sow feed intake be controlled within 1.8 kg to 2.0 kg per day within three days of breeding. Four days to 30 days after breeding, the daily feed intake was controlled at 2.0 kg per day.
Mid-pregnancy: 30 days to 80 days after mating. The main goal of this period is to adjust the sow's body condition. The principle is to limit the feeding and watching the feeding. According to the general conditions of the sow, the average feeding amount of the large group was determined, but each individual should be treated specially. Try to make the sow's sows reach a uniform level within 30 days to 60 days after the match. Studies have shown that increasing the intake of sows during the second trimester has no effect on the number of embryos, placenta, fetal weight, and body length. It is recommended that daily intake be controlled between 2.0 and 2.5 kg during this period. In addition, we must fully consider the seasonal factors, such as the ambient temperature is based on 18 °C, every 1 °C drop in ambient temperature, the pig's intake increased by approximately 50 grams. Therefore, when the winter sow house temperature is low, it is appropriate to increase the amount of feeding during this period. In addition, in order to increase the gastrointestinal volume of pregnant sows in order to facilitate the increase of feed intake of lactating sows, pregnant sows are considered to be fed once more every day.
Late pregnancy: feeding in late pregnancy should pay attention to two phenomena, one is 70 days of pregnancy to 100 days, this stage is an important period of breast development, feeding too much energy feed will cause breast fat accumulation, resulting in decreased secretion of breast cells , causing sows to lose milk during lactation. Therefore, avoid feeding too much feed during this time. After 80 days of pregnancy is the period of rapid fetal growth, about 70% of the fetal weight is growing during this period, therefore, this stage must increase the amount of feeding, otherwise it will result in a smaller pig birth weight. There has been a little conflict between the two phenomena. If the amount of feeding is increased too early, it will help increase the birth weight, but it will not be conducive to the development of the mammary gland. Increasing the amount of feeding too late will take care of the development of the mammary gland, and it will lead to childbirth. Pigs are born low. Considering all aspects, it is more appropriate to add feed from the 90th day of pregnancy. Therefore, it is appropriate to feed 3.0 kg to 3.5 kg per day for 90 to 110 days of pregnancy. The amount of feeding was reduced 3 days to 4 days before the onset of labor and fed between 2.0 kg and 2.3 kg per day.
Management during pregnancy. The basic task of pregnant sow management is to ensure the normal development of the fertilized egg and fetus in the mother's body, prevent the occurrence of abortion, and obtain a large number of pigs with good constitution. It is generally believed that there are three peaks in the death period of pig embryos. The first is the early stage of phytaxis at the 9th to 13th day of fertilization. It is susceptible to death from various factors, and the second is about the third week after pregnancy. Organ formation period. The embryonic death in these two periods accounted for about 30% to 40% of the zygote. In the late pregnancy from 60 days to 70 days, the placenta ceases to grow, and the fetus grows rapidly. At this time, fetal death may also occur. During the first month of pregnancy, feed high-quality feed to prevent mechanical irritation and high-grade fever. Minimize the impact of the external environment, such as preventing crushing, falling, and fighting, and at the same time strictly forbid drastic driving and whipping. The three peak times of death should be carefully taken care of. In summer, it is necessary to do a good job of preventing the heat and cooling. Conditional farmers can use the water curtain to cool down, which can solve the problem of high temperatures in summer. If the curtain is not installed, it is necessary to make full use of spray, electric fan and negative pressure ventilation to reduce the temperature in order to reduce the impact of the high temperature season on the sow. In addition, sows that are pregnant should not be fed with mold, spoilage, deterioration, and frozen feeds. Feeds should not be changed frequently.
Brewed from non-GMO soybeans,Lishida Light Soy Sauce is mainly used for dipping dumplings,spring rolls,seasoning noodles and soup,marinating chicken,pork,beef and so on.
We have passed the Quality Standard Certificate,ISO9001 Quality Management System Certificate,HACCP System Certificate and so on to maintain strict quality assurance.
Not only exported our own brand,We accept well-known brands for consigned OEM business.We are looking forward to your contact for great cooperation!
Light Soy Sauce
Light Soya Sauce,Premium Light Soy Sauce,non GMO Light Soy Sauce,Best Light Soy Sauce
KAIPING CITY LISHIDA FLAVOURING&FOOD CO.,LTD , https://www.lishidafood.com