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Letter to the Editor

      Dear Editor-in-Chief of AAS:
      The October 2019 issue of AAS had an invited review by
      • Fischer A.J.
      • Villot C.
      • van Niekerk J.K.
      • Yohe T.T.
      • Renaud D.L.
      • Steele M.A.
      Invited Review: Nutritional regulation of gut function in dairy calves: From colostrum to weaning..
      . On page 501 the authors misapplied a value from the citation of
      • Walker W.L.
      • Epperson W.B.
      • Wittum T.E.
      • Lord L.K.
      • Rajala-Schultz P.J.
      • Lakritz J.
      Characteristics of dairy calf ranches: Morbidity, mortality, antibiotic use practices, and biosecurity and biocontainment practices..
      , stating that “…54% of cow-calf operations administer antibiotics to prevent illness.” The cited article actually was referring to dairy calf ranches, not beef breeding herds typically considered “cow-calf” operations. The 2 production systems differ significantly in conditions, health challenges, and industry scope, and few beef cow-calf herds would use antibiotics as a routine preventive strategy.

      LITERATURE CITED

        • Fischer A.J.
        • Villot C.
        • van Niekerk J.K.
        • Yohe T.T.
        • Renaud D.L.
        • Steele M.A.
        Invited Review: Nutritional regulation of gut function in dairy calves: From colostrum to weaning..
        https://doi.org/10.15232/aas.2019-01887
        Appl. Anim. Sci. 2019; 35: 498-510
        • Walker W.L.
        • Epperson W.B.
        • Wittum T.E.
        • Lord L.K.
        • Rajala-Schultz P.J.
        • Lakritz J.
        Characteristics of dairy calf ranches: Morbidity, mortality, antibiotic use practices, and biosecurity and biocontainment practices..
        https://doi.org/10.3168/jds.2011-4727
        22459866
        J. Dairy Sci. 2012; 95: 2204-2214