Ethical Statement
The authors confirm that the ethical policies of the journal, as noted on the journal’s author guidelines page, have been adhered to the European Directive 2010/63/EU and the study was approved by the ethical committee of the Department of Veterinary Medicine of the University of Bari, Italy (Prot. Uniba 7/17) and of Ministry authorization (ISPRA Prot 73267; 31/12/2019).