Organic zinc is a necessary trace element for the synthesis of steroid hormones such as sex hormones. Therefore, zinc plays a unique and important role in reproduction. The lack or excess of zinc will have a negative impact on the reproductive performance of animals. negative effect. Zinc deficiency will affect the entire reproductive process of sows. Long-term intake of feeds with insufficient zinc in sows can cause ovarian dysplasia, atrophy, miscarriage and even dystocia, and early embryonic death. Zou Xiaoting et al. reported that appropriately increasing the dietary zinc content of pregnant sows in the diet can increase the serum albumin level of newborn piglets and the serum progesterone content of sows, and reduce the serum urea nitrogen content. Adding an appropriate amount of zinc to the feed of pregnant sows shortens the interval from weaning to estrus, significantly improves the farrowing ability of sows (P<0.05), increases the re-estrus rate and conception rate after weaning, and advances the first estrus time of gilts; Body weight increased significantly during the estrus period, and litter performance improved significantly (P<0.05).
Todd’s first test proved in 1934Organic zinc element is an essential trace element for animals and has been studied for 80 years. During this period, numerous scientific research works used a large number of test results and data to confirm that zinc is involved in all aspects of the body’s life activities. First of all, zinc is related to the regulation of the structure and activity of more than 300 biological enzymes, such as DNA synthase, alcohol dehydrogenase, and alkaline phosphatase. Secondly, zinc is an essential structural ion for biological membranes and is closely related to protein synthesis. For example, zinc can bind to phosphate groups on sulfhydryl groups and phospholipids on membrane proteins, increasing membrane stability and reducing membrane fluidity. Thirdly, the zinc finger structure composed of zinc has a significant impact on endocrine function regulation and gene expression. Zinc also has a significant effect on cell division. Finally, zinc is also related to many important hormones, including body calciferol (thyroxine), interleukin-C, testosterone and insulin, etc., promoting the development of the body’s sexual organs and sexual functions. Although the amount of zinc required by animal bodies is very small, its physiological and biochemical functions are very important. It is precisely because zinc has such extensive and far-reaching effects that it is called the “life element”.
