University of Teramo, University of Perugia, University of Perugia, University of Teramo, University of Padua, University of Turin - Department of Veterinary Sciences, University of Naples Federico II, University of Parma, University of Milan, University of Foggia, affiliation not provided to SSRN, University of Teramo - Department of Veterinary Medicine, University of Teramo, University of Teramo, affiliation not provided to SSRN, Boehringer Ingelheim Animal Health and University of Teramo