Measurements of Purine Derivatives and Creatinine in Spot Urine Samples of Chinese Yellow Cattle

  • Z. Xing
  • W. B. Xi
  • F. Mo
  • J. W. Liu
  • Y. F. Yang
  • X. B. Chen
Conference paper

Abstract

An experiment was conducted using 18 Chinese Yellow Cattle located in 5 farms to study how supplementation of fermentable energy to low quality straw-based rations would improve rumen microbial protein synthesis. Within each farm, the animals were fed on five diets. Diets 1–2 were typical rice straw + by-products used by farmers and were low in fermentable energy content; Diets 3–5 were more balanced, containing a higher content of fermentable energy. Purine derivatives (PD) and creatinine in spot urine samples were measured. The results showed that the PD to creatinine ratio was significantly higher with Diets 3–5 than with Diets 1–2. Organic matter digestibility and thus organic matter intake was also higher with Diets 3–5 compared to Diets 1–2. The results indicted that the efficiency of microbial protein synthesis could be improved by balancing the diet.

Keywords

Corn Creatinine Straw Purine Bran 

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References

  1. INTERNATIONAL ATOMIC ENERGY AGENCY, Estimation of rumen microbial protein production from purine derivatives in urine. A laboratory manual for FAO/IAEA Co-ordinated Research Programme, IAEA-TECDOC-945, IAEA, Vienna (1997). p22–44.Google Scholar
  2. [2]
    MO F, WANG Y, XING Z, CHEN, X B, YANG, Y., The effect of different feed intake on the urinary excretion of purine derivatives in Chinese Yellow Cattle, This Publication.Google Scholar
  3. [3]
    CHEN, X. B., JAYASURIYA, M. C. N., MAKKAR, H. P. S., Measurement and application of PD:creatinine ratio in spot urine samples of ruminants, This Publication.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • Z. Xing
    • 1
  • W. B. Xi
    • 1
  • F. Mo
    • 1
  • J. W. Liu
    • 1
  • Y. F. Yang
    • 1
  • X. B. Chen
    • 2
  1. 1.College of Animal Science and TechnologyChina Agricultural UniversityHaidian, BeijingChina
  2. 2.International Feed Resources UnitMacaulay InstituteCraigiebuckler, AberdeenUK

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