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    • Correlation Between Milk and Blood Urea Nitrogen in High and Low Yielding Dairy Cows 

      Sosa Puente, Irene Beatriz; Leyton Barrientos, Ludwing Vladimir; Corea Guillén, Elmer Edgardo; Elizondo Salazar, Jorge Alberto (2010)
      A study was carried out in two dairy farms (Olocuilta and Los Conacastes) in the central region of El Salvador. Sixty Holstein cows were grouped according to milk yield and days in milk: high yielding (HY, 30–90 d in ...