caa a22 4500 46912752X CHVBK 20180323133154.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF02356751 doi (NATIONALLICENCE)springer-10.1007/BF02356751 Season and location effects on serum and liver mineral concentrations of Senepol cattle on St Croix, virgin islands [Elektronische Daten] [S. Wildeus, L. McDowell, J. Fugle] Summary: Serum and liver concentrations of selected macro-and trace minerals were determined in Senepol cattle at 8 sites (4 each in a high and low rainfall region) during the dry and wet season on St Croix. At each site an average of 15 mature, lactating cows, grazing native grass/legume pastures without supplementation were blood sampled each season. Liver samples were collected (n=51) at slaughter from mature animals originating from the same sites. A preliminary analysis indicated no differences in serum mineral concentrations between mature lactating cows and growing heifers. There were differences between sites for serum magnesium (Mg) (P<0·001), copper (Cu) (P<0·05) selenium (Se) (P<0·001) and zinc (Zn) (P<0·01) in the dry season, and for Cu (P<0·01), iron (Fe) (P<0·001) and Zn (P<0·01) in the wet season. Higher (P<0·001) serum concentrations of Mg, Cu, Fe and Zn were observed in the dry season, while Se was higher (P<0·001) in the wet season. Liver concentrations of Cu and Fe were lower (P<0·01) and liver molybdenum (Mo) (P<0·001) and Se (P<0·05) higher during the dry season. The seasonal differences in serum Cu, Se and Zn concentrations have not been observed in other studies in the Central American region. More than 50% of serum samples were deficient in phosphorus (P) regardless of season, and in Cu and Zn during the wet season. Mineral supplementation should be considered. Centre for Tropical Veterinary Medicine, 1992 Wildeus S. Agricultural Experiment Station, University of the Virgin Islands, RR2, Box 10,000, Kingshill, 00850, St Croix, Virgin Islands, USA aut McDowell L. University of Florida, 32611, Gainesville, FL, USA aut Fugle J. Agricultural Experiment Station, University of the Virgin Islands, RR2, Box 10,000, Kingshill, 00850, St Croix, Virgin Islands, USA aut Tropical Animal Health and Production Kluwer Academic Publishers 24/4(1992-12-01), 223-230 0049-4747 24:4<223 1992 24 11250 https://doi.org/10.1007/BF02356751 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02356751 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wildeus S. Agricultural Experiment Station, University of the Virgin Islands, RR2, Box 10,000, Kingshill, 00850, St Croix, Virgin Islands, USA aut NATIONALLICENCE 700 1- McDowell L. University of Florida, 32611, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Fugle J. Agricultural Experiment Station, University of the Virgin Islands, RR2, Box 10,000, Kingshill, 00850, St Croix, Virgin Islands, USA aut NATIONALLICENCE 773 0- Tropical Animal Health and Production Kluwer Academic Publishers 24/4(1992-12-01), 223-230 0049-4747 24:4<223 1992 24 11250 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer