China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (3): 771-779.doi: 10.16431/j.cnki.1671-7236.2020.03.015

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Advances in Research on Calcium Metabolism and Regulation Mechanism in Pregnancy-Lactating Sows

YANG Li1,2, MA Longteng1, HE Zhixiong2, CHEN Yuguang1   

  1. 1. College of Animal Science and Technology, Hunan Agricultural University, Hunan Cooperative Innovation Center for Livestock and Poultry Safety Production, Changsha 410128, China;
    2. Hunan Provincial Key Laboratory of Animal Nutrition Physiology and Metabolism Process, Institute of Subtropical Agriculture, Chinese Academy of Science, Changsha 410125, China
  • Received:2019-10-28 Online:2020-03-20 Published:2020-03-17

Abstract: The performance of sows is affected by many factors,among which dietary mineral level is one of the main factors.Calcium plays an important role in regulating the performance of sows.There are three ways of calcium absorption,i.e.active transport,passive transport and vesicle transport.Hormones or other factors that affect calcium absorption mostly affect the utilization of dietary calcium by regulating calcium absorption.On the one hand,the appropriate dietary calcium level can promote the sow to play the maximum production potential and improve the breeding efficiency;on the other hand,when the dietary calcium level is insufficient or the utilization rate of calcium is low,first of all,the potential production performance of the sow cannot be fully developed,such as the number of litter or live litter is low,and the growth speed of the piglet is slow.Secondly,the lack of calcium utilization in sows leads to the occurrence of bone diseases,especially in the late pregnancy and lactation period,which ultimately leads to a high elimination rate,which ultimately leads to a significant reduction in the production efficiency of the breeding industry.In recent years,scholars at home and abroad have made a lot of research on the factors affecting the utilization of dietary calcium by sows,and made great progress.For example,the feeding time of calcium,the ratio of dietary calcium to phosphorus,vitamins,hormones and pH all affect the absorption and utilization of dietary calcium by sows.Therefore,it is of great practical significance to study the calcium absorption characteristics of sows and the influencing factors to improve the performance of sows.In this paper,the mechanism of calcium absorption in the body and the main factors affecting calcium absorption in sows are briefly introduced in order to provide theoretical basis for the feeding of dietary calcium in sows.

Key words: sows; calcium; absorption characteristics; regulatory mechanism

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