Abstract
The daily excretion of purine derivatives in urine has been used to estimate the supply of microbial protein to ruminant animals. The method provides a simple and non-invasive tool to indicate the nutritional status of farm animals. However due to the need for complete collection of urine the potential application at farm level is restricted.
Research conducted under the FAO/IAEA Co-ordinated Research Project has indicated that it is possible to use the purine derivatives:creatinine ratio measured in several spot urine samples collected within a day, as an index of microbial protein supply in a banding system for farm application. Some theoretical and experimental aspects in the measurement of purine derivatives:creatinine ratio in spot urine samples and the possible application of the banding system at the farm level are discussed.
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Chen, X.B., Jayasuriya, M.C.N., Makkar, H.P.S. (2004). Measurement and Application of Purine Derivatives:Creatinine Ratio in Spot Urine Samples of Ruminants. In: Makkar, H.P.S., Chen, X.B. (eds) Estimation of Microbial Protein Supply in Ruminants Using Urinary Purine Derivatives. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2844-1_20
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DOI: https://doi.org/10.1007/978-1-4020-2844-1_20
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