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Key research X-Zelit Research Thilsing-Hansen, T., and R.J. Jorgensen. 2001. Hot Topic: Prevention of parturient paresis and subclinical hypocalcemia in dairy cows by zeolite A administration in the dry period. J. Dairy Sci. 84:691-693. Kerwin, A.L., C.M. Ryan, B.M. Lenon, M. Jakobsen, P. Theilgaard, D.M. Barbano, and T.R. Overton. 2019. Effects of feeding syn- thetic zeolite A during the prepartum period on serum mineral concentration, oxidant status, and performance of multiparous Holstein cows. J. Dairy Sci. 102: W. Frizzarini, J. Diniz, A. Vang, P. Monteiro, and L. Hernandez. 2022. Effects of 3 different prepartum diets on dry matter intake, beta-hydroxybutyrate, and mineral concentrations in multipa- rous Holstein cows. J. Dairy Sci. (abstr) Suppl. 1 105:350. Thilsing, T., T. Larsen, R.J. Jorgensen, and H. Houe. 2007. The effect of dietary calcium and phosphorus supplementation in ze- olite A treated dry cows on periparturient calcium and phospho- rus homeostasis. J. Vet. Med. 54:82:89. Pallesen, A., F. Pallesen, R.J. Jorgensen, and T. Thilsing. 2008. Effect of pre-calving zeolite, magnesium and phosphorus sup- plementation on periparturient serum mineral concentrations. Vet. J. 175:234-239. Grabherr, H., M. Spolders, M. Furll, and G. Flachowsky. 2009. Effecct of several doses of zeolite A on feed intake, energy metabolism and on mineral metabolism in dairy cows around calving. J. Anim. Phys. and Anim. Nutr. 93:221-236. Grabherr, H., M. Spolders, P. Lebsien, L. Huther, G. Flachowsky, M. Furll, and M. Grun. 2009. Effect of zeolite A on rumen fer- mentation and phosphorus metabolism in dairy cows. Arch. Of Anim. Nutr. 63:4, 321-336. R. Souza Saraiva de Oliveira. 2017. An alternative strategy to prevent hypocalcemia by adding zeolite A to the prepartum diet of dairy cows. MS Thesis. Kansas State University, Manhattan, KS. Jørgensen R.J., Hansen T, Jensen M.L., and Thilsing Hansen T. 2001. Effect of oral drenching with zinc oxide or synthetic zeolite A on total blood calcium in dairy cows. J. of Dairy Sci. 84:609–613. Thilsing-Hansen, T., R.J. Jorgensen, J.M.D. Enemark, and T. Larsen. 2002. The effect of zeolite A supplementation in the dry period on periparturient calcium, phosphorus and magnesium homeostasis. J. Dairy Sci., 85:1855-1862. Dietary Phosphorus Research Cohrs. I., M.R. Wilkens, and W. Grunberg. 2018. Short communi- cation: Effect of dietary phosphorus deprivation in late gestation and early lactation on the calcium homeostasis of periparturient dairy cows. J. Dairy Sci. 101:9591-9598. Grünberg, W., P. Scherpenisse, P. Dobbelaar, M. J. Idink, and I. D. Wijnberg. 2015. The effect of transient, moderate dietary phos- phorus deprivation on phosphorus metabolism, muscle content of different phosphorus-containing compounds, and muscle function in dairy cows. J. Dairy Sci. 98:5385–5400. Peterson, A. B., M. W. Orth, J. P. Goff, and D. K. Beede. 2005. Periparturient responses of multiparous Holstein cows fed differ- ent dietary phosphorus concentrations prepartum. J. Dairy Sci. 88:3582– 3594. Wachter, S., I. Cohrs, L. Golbeck, M.R. Wilkens and W. Grunberg. 2022. Effects of restricted dietary phosphorus to dry cows on periparturient calcium status. J. Dairy Sci. 105:748-760. Wachter, S., I Cohrs, L. Golbeck, T. Scheu, K. Eder, and W. Grun- berg. Effects of restricted dietary phosphorus supply during the dry period on productivity and metabolism in dairy cows. J. Dairy Sci. 105:4370-4392. Julien, W.E., H.R. Conrad, J.W. Hibbs, and W.L. Crist. 1976. Milk fever in dairy cows. VIII. Effect of injected vitamin D3 and calcium and phosphorus intake on incidence. J. Dairy Sci. 60:431-436. Anderson, S. T., L. J. Kidd, M. A. Benvenutti, M. T. Fletcher, and R. M. Dixon. 2017. New candidate markers of phosphorus status in beef breeder cows. Anim. Prod. Sci. 57:2291–2303 Keanthao, P., Goselink, R.M.A.; Schonewille, J.T. Dijkstra, J. and W.H. Hendriks. 2019. Effect of phosphorus intake during the transition period on plasma phosphorus content and hypocalce- mia in dairy cows. Proc. of the 17th Inter. Conf. on Prod. Disease in Farm Anim. (abstr), P 191. Barton, B.A., Jorgensen, N.A., DeLuca, H.F., 1987. Impact of prepartum dietary phosphorus intake on calcium homeostasis at parturition. J. of Dairy Sci. 70, 1186–1191. FGF-23 Reviews Crenshaw, T.D., L.A. Rortvedt and Z. Hassen. 2011. A novel pathway for vitamin D-mediated phosphate homeostasis: Implications for skeleton growth and mineralization. J. Anim. Sci. 89:1957-1964. Shimada, T., H. Hasegawa, Y. Yamazaki. 2004. FGF-23 is a potent regulator of vitamin D metabolism and phosphate homeostasis. J. of Bone and Mineral Res. 19:429- VK221101 / Rev. 29.11.22 info@vilofoss.com www.vilofoss.com