The key to raising money in the pig industry is the management of sows, which is a fact recognized by current farm owners and professional technicians. In order to improve the production level of pigs and obtain the best economic benefits under the same conditions, it is necessary to manage the breeding of sows. In recent years, in guiding the production practice of large-scale pig farms, we have adopted targeted management measures according to the physiological characteristics of sows, and obtained good results and economic benefits. 1 feeding management of gilts For gilts, it is required to start breeding at 50 to 70% of the weight of adult pigs at 6 to 8 months of age, but to prevent over-fertilization and cause reproductive failure. In the diet structure, we must first ensure the nutritional needs of bone and muscle growth and development, control the use of high-energy feed, and use high-quality green and dry powder. After weighing 50 kg, a limited-time quantitative restriction method should be used. In order to ensure the normal development of the skeletal and muscles of the gilts, to maintain a well-balanced body shape, enhance physical fitness, and induce sexual activity, exercise must be strengthened. In the design of the pig house, there must be 5 to 6 times the playground of the pig bed area. According to the requirements of the gilts, the body weight is once a month, and the body size should be measured at the age of 6 months. If the body weight and the variety requirements are too large, the pigs should be adjusted in time to adjust the feed formula and feed amount. Ensure the normal growth and development of gilts. 2 feeding management of pregnant sows 2.1 Choosing the right way to raise pregnant sows 2.1.1 "Catch the middle of the two heads" feeding method. This method is suitable for sows that are thin after weaning. This type of sow has a large amount of physical exertion after childbirth and a lactation period. In order to carry out the next stage of breeding tasks, it is necessary to strengthen nutrition in the early stage of breeding to restore the reproductive condition. After the recovery of the body condition, the transition to the green roughage is gradually carried out until 80 days after the pregnancy, and then the concentrate is added to meet the nutritional needs of the rapid growth of the fetus. This feeding method forms high-low-high nutrient levels, but the nutritional level in late pregnancy should be higher than in the early stage. 2.1.2 "Step by step" feeding method. This method is suitable for sows with primiparous sows and lactating. The nutritional level throughout the pregnancy is gradually increased as the weight of the fetus increases. Generally, in the early stage of pregnancy, the green roughage is the main factor. Later, the proportion of concentrate is gradually increased, and the protein and mineral feed are increased. By 3 to 5 days before the birth, the diet is reduced by 10% to 20%. 2.1.3 "pre-rough and fine" feeding method. This method is suitable for sows with better breeding conditions, and the nutritional level is appropriately reduced in the early pregnancy period, and then raised to the feeding standard in the late pregnancy to meet the needs of rapid growth of the fetus. It is better to use restricted feeding for pregnant sows. The daily feeding amount should be based on the weight, age, ambient temperature and the feeding method of the sow. The sows are required to increase their body weight by 25-35 kg throughout the pregnancy (including fetal weight and uterine contents); primiparous sows are required to increase their body weight by 30-45 kg. For this reason, it is appropriate to feed 1.5-2.5 kg per day. . 2.2 pregnant sow management The central task is to do a good job of preventing miscarriage, ensure the normal development of the fetus, and prevent mechanical abortion. 2.2.1 After breeding, the sow becomes calm and active, the rest time increases, and about 70% to 80% of the time rests in the late pregnancy, so the daily management should prevent the startling and harassment. 2.2.2 Reasonable grouping, preferably in single or single column breeding. Even if the group is fed, they should be grouped at the time of breeding so that they are familiar with each other before pregnancy. The stocking density is not too large, and the space occupied by each sow should be determined according to the weight of the sow. The average area of ​​the sow is not less than 1.6-1.7 square meters. 2.2.3 Pregnant sows have a large amount of water, and it is necessary to supply adequate and clean drinking water, especially in the hot summer months. Drinking water is more important. 2.2.4 The feed of pregnant sows should pay attention to quality and hygiene. All mildew, spoilage, frozen, toxic and irritating feeds should not be fed to sows to prevent miscarriage. The feed supply should be balanced and stable and cannot be changed frequently. Pregnant sows have strong metabolism and good appetite. They can use green roughage, but avoid excessive volume and excessive fiber. Attention should also be paid to the processing and modulation of the feed to increase the number of feedings. 2.2.5 When the summer climate is hot, pay attention to the heatstroke prevention and cooling work. In winter rainy or snowy weather or cold weather, stop exercising to prevent slipping and cold. 2.3 Determination of the date of delivery of pregnant sows For the wonderful pictures and hot comments on the management of sow feeding, you may be interested in the following recommended contents, welcome to read. Uterine Manipulator,Gynecology Cup-Type Uterine,Multifunction Uterine Manipulator,Cup Uterine Manipulator ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.shendasiaomed.com
