Abstract
Blood samples from 4,427 cows in over 300 commercial dairy herds were examined as part of a health monitoring scheme. Preliminary evidence is presented indicating that marginal concentrations of serum magnesium are related to below mean levels of blood urea nitrogen in such a manner as to suggest that marginal magnesium deficiency is a possible cause of reduced voluntary feed intake in cows managed in commercial dairy farming systems.
References
Adams, R. S., Stout, W. L., Kradel, D. C., Guss, S. B., Jr., Moser, B. L. and Jung, G. A., 1978. Use and limitations of profiles in assessing health or nutritional status of dairy herds. J. Dairy Sci., 61: 1671–1679.
Ammerman, C. V., Chicco, C. F., Moore, J. E., van Walleghem, P. A. and Arrington, L. R., 1971. Effect of dietary magnesium on voluntary feed intake and rumen fermentations. J. Dairy Sci., 54: 1288–1293.
Kronfeld, D. S. and Simensen, M. G., 1970. The hypomagnesemic tetanies. In: W. J. Gibbons, E. J. Catcott and J. F. Smithcors (Editors), Bovine Medicine and Surgery. American Veterinary Publications, Illinois, pp. 399–406.
Lee, A. J., Twardock, A. R., Bubar, R. H., Hall, R. E. and Davis, C. L., 1978. Blood metabolic profiles: Their use and relation to nutritional status of dairy cows. J. Dairy Sci., 61: 1652–1670.
Manston, R., Russel, A. M., Dew, S. M. and Payne, J. M., 1975. The influence of dietary protein upon blood composition in dairy cows. Vet. Rec., 96: 497–502.
Martin, J. E., Arrington, L. R., Moore, J. E., Ammerman, C. B., Davis, G. K. and Shirley, R. L., 1964. Effect of magnesium and sulfur upon cellulose digestion of purified rations by cattle and sheep. J. Nutr., 83: 60–64.
Payne, J. M., Rowlands, G. J., Manston, R. and Dew, S. M., 1973. A statistical appraisal of the results of metabolic profile tests on 75 dairy herds. Br. vet. J., 129: 370–381.
Payne, J. M., Rowlands, G. J., Manston, R., Dew, S. M. and Parker, W. H., 1974. A statistical appraisal of the results of metabolic profile tests on 191 herds in the BVA/ADAS joint exercise in animal health and productivity. Br. vet. J., 130: 34–44.
Payne, J. M., 1977. Metabolic Diseases in Farm Animals. Heineman, London. 206 pp.
Polan, C. E., Miller, C. N., Chandler, P. T., Sandy, R. A. and Boman, R. L., 1970. Interaction of urea, protein and productive factors in lactating cows. J. Dairy Sci., 53: 1598.
Preston, R. L., Schnakenberg, D. D. and Pfander, W. H., 1965. Protein utilisation in ruminants: 1. Blood urea nitrogen as affected by protein intake. J. Nutr., 86: 281–288.
Prewitt, L. R., Kertz, A. F., Lane, A. G., Campbell, J. R. and Weinmann, D. E., 1971. Effects of dietary protein on blood, urine and milk composition. Am. J. vet. Res., 32: 393–397.
Rowlands, G. J., Manston, R., Pocock, R. M. and Dew, S. M., 1975. Relationships between stage of lactation and pregnancy and blood composition in a herd of dairy cows and the influences of seasonal changes in management on these relationships. J. Dairy Res., 42: 349–362.
van Horn, H. H., Jacobsen, D. R. and Graden, A. P., 1969. Influence of level and source of nitrogen on milk production and blood components. J. Dairy Sci., 52: 1395–1403.
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Scott, P.R., Kelly, J.M., Whitaker, D.A. et al. Marginal magnesium deficiency as a possible cause of reduced voluntary feed intake in commercially managed dairy cows. Vet Res Commun 4, 225–229 (1980). https://doi.org/10.1007/BF02278498
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DOI: https://doi.org/10.1007/BF02278498