References
- AOAC. 1990. Official Methods of Analysis. Association of Official Analytical Chemists, Arlington, Virginia, USA
- Bakshi, M. P. S., V. K. Gupta and P. N. Langar. 1986. Fermented straw as a complete basal ration for ruminants. Agric. Wastes, 16:37-46 https://doi.org/10.1016/0141-4607(86)90035-1
- Bakshi, M. P. S. and P. N. Langar. 1994. Utilization of naturally fermented urea-crop residues in buffalo production. Buffalo J. 10:19-27
- Bakshi, M. P. S. and M. Wadhwa. 2001. Nutritive evaluation of inoculated fermented wheat straw as complete feed for buffaloes. Indian J. Anim. Sci. 71:710-711
- Bakshi, M. P. S. and M. Wadhwa. 2004. Evaluation of forest tree leaves of semi-hilly arid region as livestock feed. Asian-Aust. J. Anim. Sci. 17:777-783 https://doi.org/10.5713/ajas.2004.777
- Barnett, A. J. G. and R. L. Reid. 1957. Studies on the production of volatile fatty acids from the grass in artificial rumen. 1. Volatile fatty acid production from fresh grass. J. Agric. Sci. 48:315 Biosphere Programme. pp. 131-161 https://doi.org/10.1017/S0021859600031671
- Broster, W. H. and P. D. Oldham. 1981. Recent developments in ruminant nutrition. In: (Ed. W. Hariesign and D. J. A. Coles), Butterworths, London, pp. 194-199
- Chen, X. B., E. R. Orskov, F. D. Hovell and B. De. 1990. Excretion of purine derivatives by ruminants: endogenous excretion, differences between cattle and sheep. Br. J. Nutr. 63:121-129 https://doi.org/10.1079/BJN19900097
- Chen, X. B., A. T. Mejia, D. J. Kyle and E. R. Orskov. 1992. Evaluation of the use of purine derivative:creatinine ratio in spot urine and plasma samples as an index of microbial protein supply in ruminants: Studies in sheep. J. Agric. Sci. 125:137- 143 https://doi.org/10.1017/S002185960007458X
- Chen, X. B. and M. J. Gomes. 1995. Estimation of microbial protein supply to sheep and cattle based on urinary excretion of purine derivatives- An Overview of the Technical details Occasional Publication. Rowette Research Institute, Aberdeen. pp. 1-21
- Chen, X. B. and M. C. N. Jayasuria. 1997. "Purine Nitrogen Index, a potentially new parameter for rapid feed evaluation in ruminants". In vitro techniques for measuring nutrient supply to ruminants, Proc. International Symposium of Br. Soc. Anim. Sci. University of Reading, UK
- Chen, X. B., D. B. Subba, E. R. Orskov and M. C. N. Jayasuria. 1999. Purine Nitrogen Index, a potentially new parameter for rapid feed evaluation in ruminants. IAEA-TECDOC-1093
- Cline, J. H., T. V. Hershberger and O. G. Bentley. 1958. Utilization and/or synthesis of valeric acid during digestion of glucose, starch and cellulose by rumen micro-organisms in vitro. J. Anim. Sci. 17:284-292 https://doi.org/10.2527/jas1958.172284x
- Crampton, E. W. and L. A. Maynard. 1938. The relation of cellulose and lignin content to the nutritive value of animal feeds. J. Nutr. 16:383-395
- Dahiya, S. S., B. S. Punia and T. R. Chauhan. 1998. Voluntary feed intake and nutrient utilization in buffalo bullocks fed untreated and urea (ammonia) treated berseem and oat straw. Indian J. Anim. Nutr. 15:93-96
- Duncan, D. B. 1955. Multiple range and multiple F tests. Biometrics 11:1-42. https://doi.org/10.2307/3001478
- Gonda, H. L. 1995. Nutritional status of ruminants determined from excretion and concentration of metabolites in body fluids. Ph.D. Dissertation. Swedish Univ. of Agricultural Sciences. Department of Animal Nutrition and Management, Uppsala
- Hawk, P. B., B. L. Oser and W. H. Summerson. 1976. Physiological Chemistry. (14th Ed). McGraw Hill Publishing Company Ltd., London
- Kanjanapruthipong, J. and R. A. Leng. 1998. Purine derivatives excreted in urine as an indicator estimating microbial yield from the rumen: A review. Aust. J. Agic. Res. 11:209-216
- McDonald, P., R. A. Edward and J. F. D. Greenhalgh. 1977. Nutritive value of foods for ruminants. In Animal Nutrition. English Language Book Society ang Longman. pp. 432-435
- Moscardini, S., M. L. Haddi, B. Stefanon and P. Susmel. 1999. Measurement of purine derivatives in the urine of some ruminant species. IAEA-TECDOC-1093
- Nath, D. K., C. S. Barsaul and M. L. Meheshwari. 1990. Chemical composition and nutritive value of berseem straw in Haryana calves. Indian J. Anim. Nutr. 7:305-306
- Pimpa, O. and J. B. Liang. 2002. Estimation of microbial protein supply of lactating dairy cows under small-holder farms in north-east Thailand using urinary purine derivatives technique. Paper presented at the joint IAEA/FAO 4th RCM, 6-10 May 2002, University of Agriculture and Forestry, Hue, Vietnam
- Ranjhan, S. K. and N. N. Pathak. 1979. Average nutritive value of common feeding stuffs. In 'Management and feeding of buffaloes'. Vikas Publishing House, New Delhi. pp. 255-256
- Robertson, J. A. and P. J. Van Soest. 1981. The detergent system of analysis and its application to human food. In: (Ed. W. P. T. James and O. Theander), the analysis of Dietary Fibre in Food. Marcel Dekker Inc., New York, pp. 123-158
- Snedecor, G. W. and W. G. Cochran. 1994. Statistical Methods. Oxford and IBH Publications, New Delhi
- Susmel, P., B. Stefanon, E. Plazzota, M. Spanguero and C. R. Mills. 1994. The effect of energy and protein intake on the excretion of purine derivatives. J. Agric. Sci. 123:257-266 https://doi.org/10.1017/S0021859600068532
- Topps, J. H. and R. C. Elliott. 1965. Relationship between concentrations of ruminal nucleic acids and excretion of purine derivatives by sheep. Nature 205:498-499
- Trivedi, R. C., L. Rebar, E. Berta and L. Stong. 1978. New enzymatic method for serum uric acid at 500 nm. Clin. Chem. 24:1908-1911
- Valadares, R. F. D., G. A. Broderick, S. C. Valadares Filho and M. K. Clayton. 1999. Effect of replacing alfalfa silage with high moisture corn on ruminal protein synthesis estimated from excretion of total purine derivatives. J. Dairy Sci. 82:2686- 2696 https://doi.org/10.3168/jds.S0022-0302(99)75525-6
- Young, E. G. and C. F. Conway. 1942. On the estimation of allantoin by Rimini-Schryver reaction. J. Biol. Chem. 142:839- 852