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Measurement of microbial protein synthesis in Iranian buffalo rumen (Mazandran Province) by purine derivatives excretion method

Published online by Cambridge University Press:  23 November 2017

Yashar Vakil Faraji ,
Mojtaba Zahedifar  and
Jafari Khorshidi Kaveh
Yashar Vakil Faraji
Affiliation:
Islamic Azad University, Branch of Ghaemshahr, Ghaemshahr, Mazandaran, Iran
Mojtaba Zahedifar
Affiliation:
Institute of Animal Science Research, Karaj, Tehran, Iran
Jafari Khorshidi Kaveh*
Affiliation:
Islamic Azad University, Branch of Savadkooh, Ghaemshahr, Mazandaran, Iran
*
Email:kavehjk@yahoo.com
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Extract

Rumen microbes are rich in nucleic acid: around 18% of total nitrogen is present on nucleic acids or 11% in purines. Rumen microbes constitue the major source of protein supply to the ruminant. The purines from the rumen microbes are metabolized and excreted in the urine as their end products: hypoxanthine, xanthine, uric acid and allantoin. In buffalo and cattle because of high xanthine oxidase activity in intestine and blood, hypoxanthine and xanthine convert to uric acid therefore only uric acid and allantoin excreted in urine way (Chen, X. B., Ørskov, E. R., 2003). This research carried out to use excretion of purine derivatives namely allantoin and uric acid as a parameter to estimate the microbial protein synthesis in the rumen of native swamp buffalo in north of iran, Mazandaran Province.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 216
Copyright
Copyright © The British Society of Animal Science 2007

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References

ARC., 1984, Report of the protein group of the agricultural research council working party on the nutrient requirements of ruminants, In: The Nutrient Requirements of Ruminant Livestock. Surrey:: The Gresham Press.Google Scholar
Chen, X. B., Ørskov, E. R., 2003. Research on urinary excretion of purine derivatives in ruminants: Past, Present and future. International Feed Resource Unit, Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH, United Kingdom.Google Scholar