›› 2019, Vol. 46 ›› Issue (3): 740-746.doi: 10.16431/j.cnki.1671-7236.2019.03.012

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

pplication and Mechanism of Glucosamine in Regulating Birth Weight and Uniformity of PigletsA

FENG Tao1,2, WEI Shangli2, CAO Xin3, TIAN Jianhui4, LIU Yan1   

  1. 1. Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
    2. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    3. Experimental Teaching Department, Northwest Minzu University, Lanzhou 730030, China;
    4. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
  • Received:2018-10-09 Online:2019-03-20 Published:2019-03-20

Abstract:

Litter size and birth weight are the two important factors for sows breeding productivity in pig industry,but litter size and birth weight show negative correlation.Recently,one of the research hot spots is how to improve birth weight and decrease its variation of piglets.Glucosamine is one of the feed stuffs and is widespread in nature.Published papers have showed that late pregnancy feed supplementation with glucosamine can regulate the birth weight and placenta development of piglets.This paper introduced the application effects of nutrients including amino acids and proteins,energy sources and functional additives on regulation of birth weight and variation of piglets,described the characteristics,source and synthetic method of glucosamine,mainly expounded the effect of glucosamine added in late pregnancy of sows on fructose concentrations stabilization in fetus,promotion placental development and placental function improvement,and analyzed the potential mechanisms of glucosamine regulation on placental development,birth weight and variation through increasing placental stroma development,improving placental folded bilayer extension,stimulating pig placenta trophectoderm cell proliferation,and enhancing placental function,and then raised the future research directions of glucosamine regulation on birth weight and variation in piglets.This review expected to supply a theoretical and practical basis for controlling birth weight and uniformity of piglets in pig industry.

Key words: glucosamine; piglets; birth weight; uniformity; placental development

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