Effects of Chitooligosaccharide on Pregnant Sows
The health and high production of pregnant sows is a key issue in pig farming. Improving the performance of sows requires the improvement of many factors, such as genetics and environmental factors, and nutritional regulation is one of the most important factors. With the right nutrient supply, it is possible to ensure that the genetically determined performance potential of the sow is fully expressed. The application of chitosan oligosaccharide in sow breeding to improve the reproductive performance and health level of sows is an important breakthrough in research in recent years. It has been reported that the application of chitosan oligosaccharide to the pregnancy stage of sows has found that chitosan oligosaccharide can effectively improve the reproductive capacity of sows. %, the live birth weight increased by 31.3%, and the litter size and litter weight of sows were significantly increased. Similar results were obtained in another study, in which chitooligosaccharide supplementation improved fetal survival at day 35 of gestation and decreased the number of stillborn piglets per litter compared with the conventional diet group. Yang Kaiyun systematically studied the effect of adding chitosan oligosaccharides in the diet on the productivity of sows and found that chitosan oligosaccharides can enhance the immunity and antioxidant capacity of sows, improve the health status of sows, and provide a good internal environment for fetal growth and development. At the same time, it can increase the content of leptin in the serum of sows, and up-regulate the expression of VEGFA gene mRNA in the placenta in early pregnancy, which is beneficial to angiogenesis and fetal growth and survival and improves the reproductive performance of sows.
Effects of Chitooligosaccharide on Lactating Sows
Lactating sows are in the most important position in the entire pig production process. Lactating sows are well managed and fed. After weaning, the sows are easy to come into heat and maintain good reproductive performance. After weaning, the piglets are transferred to the nursery for easy feeding. Lay a solid foundation to improve the breeding rate. A study found that supplementation of chitosan oligosaccharide in lactating sows significantly increased the concentrations of IL-10, IgA and IgM in sow serum, as well as total antioxidant capacity, suggesting that supplementation of chitosan oligosaccharide in late pregnancy and lactation can improve the antioxidant capacity of sows. Ability and humoral immune function, help improve colostrum and milk quality, and ultimately improve piglet growth performance. Jiang Fei systematically studied the effects of chitosan oligosaccharides on lactating sows and newborn piglets, and found that chitosan oligosaccharides could increase the milk production of lactating sows, the conventional nutrient content and the level of immunoglobulins in milk, and chitosan oligosaccharides significantly improved lactating mothers. The immune function and antioxidant levels of pigs and their health are significantly improved, which is also a key factor in improving the production performance of lactating sows.
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