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              Research 
(Published 
online: 29-12-2014) 
              22. 
              Selenium status in cattle herds in Wallonia (Belgium): overview 
              and health management - 
              Youcef Mehdi, Jean-François Cabaraux, 
              Jean-Luc Hornick, Louis Istasse and Isabelle Dufrasne 
              
              Veterinary World, 7(12): 1144-1149 
                
              
   
                
                
doi: 
              10.14202/vetworld.2014.1144-1149 
                  
              Youcef Mehdi: 
              
              Nutrition Unit, Animal Production Department, Veterinary Faculty, 
              University of Liège, Boulevard de Colonster 20, Bât. B43, 4000 
              Liège, Belgium;
              
              
              ymehdi@doct.ulg.ac.be 
              Jean-François Cabaraux: 
              
              Veterinary Ecology Unit, Animal Production Department, Veterinary 
              Faculty, University of Liège, Boulevard de Colonster 20, Bât. B43, 
              4000 Liège, Belgium;
              
              
              jfcabaraux@ulg.ac.be 
              Jean-Luc Hornick: 
              
              Nutrition Unit, Animal Production Department, Veterinary Faculty, 
              University of Liège, Boulevard de Colonster 20, Bât. B43, 4000 
              Liège, Belgium;
              
              
              jlhornick@ulg.ac.be 
              Louis Istasse: 
              
              Nutrition Unit, Animal Production Department, Veterinary Faculty, 
              University of Liège, Boulevard de Colonster 20, Bât. B43, 4000 
              Liège, Belgium;
              
              listasse@ulg.ac.be 
              Isabelle Dufrasne: Nutrition Unit, Animal Production 
              Department, Veterinary Faculty, University of Liège, Boulevard de 
              Colonster 20, Bât. B43, 4000 Liège, Belgium;
              
              Isabelle.Dufrasne@ulg.ac.be   
              Received: 29-07-2014, Revised: 18-11-2014, Accepted: 22-11-2014, 
              Published online: 29-12-2014   
              
              
              Corresponding author:
              
              Isabelle Dufrasne, e-mail: Isabelle.Dufrasne@ulg.ac.be 
 
              Abstract 
 Aim:
              Monitoring was performed in order to determine the Selenium 
              (Se) status of cattle herds in different agricultural areas in 
              Wallonia (Belgium). 
              Materials and Methods: The study included 114 heifers and 184 
              cows (82 dairy and 102 beef cows) from 66 cattle farms situated in 
              Wallonia. The Se status was assessed by measuring the glutathion 
              peroxydase in red cells and converting it to the equivalent Se 
              blood content. 
              Results: The average blood concentrations of Se were very low. 
              The Ardennes region was an area where the lowest Se status was 
              recorded. The highest levels of Se in dairy cows and beef cows 
              were recorded respectively in the limoneuse region and Famenne 
              areas. The Se content in beef herds was lower compared with that 
              of dairy herds (35 vs. 56 μg/L, 
              p<0.01). 
              Conclusion: On average over all the regions, 87% of animals 
              were classified as deficient and only 13% of the animals were 
              classified as adequate. The heifers from both dairy and beef herds 
              in Wallonia exhibited a deficiency in Se classified as moderate to 
              severe. The beef herds showed larger deficiencies compared with 
              the dairy herds. Selenium deficiency can be prevented by ensuring 
              adequate supplementation of deficient animals in Se deficient 
              regions. An increased consumption of vitamin-mineral supplements, 
              the use of Se-enriched fertilizers and ingredients containing high 
              levels of Se can help to reduce or correct deficiencies recorded 
              in cattle herds in Wallonia. 
              Keywords: cows, glutathione peroxidase, 
              heifers, selenium deficiency. 
 
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