Purine derivatives excretion in lactating ewes fed straw diets with different levels of fish meal

Animal Feed Science and Technology

Volumn 63, Issue 1-4, 1996, Pages 341-346

  Martin Orue S M ^a   Dapoza, C ^a   Balcells, J ^a   Castrillo, C ^a  

^a UNIVERSIDAD DE ZARAGOZA   (Spain)

Author keywords

Ewe; Milk; Purine derivatives

Indexed keywords

OVIS;

EID: 0000383459     PISSN: 03778401     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0377-8401(96)01022-X     Document Type: Article

References (12)

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2. Balcells, J., Guada, J.A., Castrillo, C. and Gasa, J., 1991. Urinary excretion of allantoin and allantoin precursors by sheep after different rates of purine infusion into the duodenum. J. Agric. Sci. Camb., 116: 309-317.
3. Balcells, J., Guada, J.A., Peiró, J.M. and Parker, D.S., 1992. Simultaneous determination of allantoin and oxypurines in biological fluids by high-performance liquid chromatography. J. Chromatogr., 575: 153-157.
4. Chen, X.B., Hovell, F.D. DeB., Ørskov, E.R., and Brown, D.S., 1990. Excretion of purine derivatives by ruminants: effect of exogenous nucleic acid supply on purine derivative excretion by sheep. Br. J. Nutr., 63: 131-142.
5. Giesecke, D., Ehrentreich, L., Stangassinger, M. and Ahrens, F., 1994. Mammary and renal excretion of purine metabolites in relation to energy intake and milk yield in dairy cows. J. Dairy Sci., 77: 2376-2381.
6. Lux, O., Naidoo, D. and Salonikas, C., 1992. Improved HPLC method for the simultaneous measurement of allantoin and uric acid in plasma. Ann. Clin. Biochem., 29: 674-675.
7. MAFF, 1992. Feed composition. Ministry of Agriculture, Fisheries and Food Standing Committee on Tables of Feed Composition. Chalcombe Publications, Canterbury.
8. Ortin, A., López-Pérez, M.J., Muiño Blanco, M.T. and Cebrián Pérez, J., A., 1991. Extraction of xanthine oxidase from milk by counter-current distribution in an aqueous two-phase system. J. Chromotogr., 558: 357-367.
9. Rosskopf, R., Rainer, H. and Giesecke, D., 1991. Purine and pyrimidine metabolites for the evaluation of rumen metabolism: HPLC analysis in milk and blood plasma (In German with English abstract). Arch. Anim. Nutr., 41: 411-426.
10. Rosskopf, R. and Giesecke, D., 1992. Investigations in cows on the influence of energy intake on rumen metabolism by means of allantoin excretion in the milk (In German with English abstract). J. Vet. Med. A., 39: 515-524.
11. Surra, J.C.E., 1994 Purine derivatives excretion in sheep (In Spanish). PhD Thesis. University of Zaragoza.
12. Tiemeyer, W., Stohrer, M. and Giesecke, D., 1984. Metabolites of nucleic acids in bovine milk. J. Dairy Sci., 67: 723-728.