The feeding rate of pregnant sows adopts the principle of “low before and after highâ€. It is based on the physiological characteristics of pregnant sows and the laws of embryonic growth and development. The metabolic function of pregnant sows is very strong, the utilization rate of feed is high, and the synthesis of protein is also strong. The same total amount of mixed ingredients is used to feed pregnant sows and empty sows respectively. The total increase of the former is significantly greater than The latter, after subtracting the weight of fetuses and their attachments from pregnant sows, still greatly exceeds the weight of pregnant sows. The growth of fetal pigs is slow and fast before growth, and the weight gain of fetal pigs accounts for about two-thirds of the total weight gain in the month before labor. Therefore, during the first month of pregnancy, sows should avoid feeding high-energy feed and increase the proportion of low-energy roughage so as not to cause embryonic death. For lean pigs, when fed with full-price pregnant sows, the first 30 days of pregnancy, the amount of feed should be controlled to 1.8 kg or less, and then to 80 to 85 days of pregnancy, 2 kg per day, prenatal In one month, the daily feed volume increased to 2.2-2.5 kg. You can feed sow during lactation one week before delivery. The daily feed amount is 3 to 4 kg (half a day or two before delivery) to ensure that there is enough nutrients for fetal pigs. Need for growth and development. The specific feeding amount of pregnant sows is more importantly based on the body condition of the sow and the nutrient concentration of the full-price mixture. The specific adjustment method can be flexibly controlled according to the type of the different sows.
During pregnancy, especially in late pregnancy, sows should not be over-fat or over-skinny. Moderate body condition and over-slaughter sows not only waste feed, increase feeding cost, but often result in excessive accumulation of adipose tissue in the abdominal cavity. The oppression of the uterus affects the development of the fetus and produces weak piglets. It is also easy to produce dystocia, and postpartum is also prone to ill effects such as loss of appetite, lack of lactation, constipation, and too much loss during feeding. Slaughtered piglets, over-fed and over-fed sows are not conducive to the growth of the breast. Too thin sows produce weak piglets due to lack of nutrients that affect the growth and development of the pigs. At the same time, due to less weight gain of the sows during pregnancy, the body does not have enough nutrient reserves, resulting in insufficient lactation and affecting the growth and development of the suckling piglets. Sows are severely emaciated due to excessive consumption of body fluids, affecting normal estrus and breeding after weaning. In addition, at any time to ensure the quality of feed, should not be fed mold, deterioration, corruption, toxic and highly irritating feed, otherwise it will easily lead to miscarriage and stillbirth.
In short, the amount of feed for pregnant sows is based on different varieties, with reference to the relevant feeding standards to determine; Second, adjust the amount of feed according to body condition. The use of unit limit bars to raise pregnant sows is an effective measure to control sow feed intake and body condition. If sows are bred in groups, it is advisable to use ground-feeding methods to reduce sowing and fighting between sows, so that each sow can eat the share of feed that should be obtained. The so-called ground feeding method is to first clean the ground barn, and then spread the feed scattered on the ground.
JRT has been R&D Laser Distance Sensor every year. In this part, we put every new sensor here. To help our customer to find the lastest item. To know the updates we are doing, what's new for laser distance modules. What kind of Laser Distance Meter sensor we can make.
Best Regards
JRT Team
New Laser Distance Sensor,New Laser Distance Module,New Distance Sensor,New Laser Sensor
Chengdu JRT Meter Technology Co., Ltd , https://www.cdlaserdistancemeter.com