China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (11): 4197-4206.doi: 10.16431/j.cnki.1671-7236.2022.11.010

• Nutrition and Feed • Previous Articles     Next Articles

Research Progress on Threonine in Pekin Duck

JIA Wenqian, ZHUANG Zhong, BAI Hao, WANG Zhixiu, CHANG Guobin, CHEN Guohong, JIANG Yong   

  1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
  • Received:2022-03-28 Online:2022-11-05 Published:2022-11-04

Abstract: Threonine is the third limiting amino acid for poultry, which has important regulatory effects on growth and development, intestinal health, immune function and fat metabolism of Pekin ducks.Peking duck is a meat duck breed bred independently in China.It has the characteristics of fast growth and good fattening performance, and is the raw material for the famous "Peking Roast Duck".The author summarizes the research of threonine on the nutritional and physiological functions of Peking duck in recent years, including the effect of threonine on growth performance, slaughter performance, immune function, intestinal health and fat metabolism in different strains of Peking duck, and the mechanism of threonine regulation on lipid metabolism.Based on the research results of threonine requirement in recent years, the threonine requirements are evaluated with the quadratic curve break-line model and the straight-line-break line model, to meet daily weight gain, average daily feed intake, breast muscle rate, feed-to-weight ratio.It is recommended that the threonine requirement to meet the maximum daily weight gain and meat production of 1-21 day old Peking duck is 0.60%-0.67%.However, there is little research on the threonine requirement of Peking duck in the late growth stage, and further research is needed.In addition, it is necessary to further study the molecular mechanism of threonine regulating fat metabolism, intestinal health and immune function in Peking duck.

Key words: Pekin duck; threonine; biological function

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