[Against bovine viral diarrhoea routine diagnosis is necessary [dairy cows; BVD]]

age aislamiento allevamento degli animali animal husbandry antibodies anticorpi anticorps anticuerpos antigene antigeni antigens arn artificial insemination bovine diarrhoea pestivirus bulls control de enfermedades controllo delle malattie dairy cows diagnosi di laboratorio diagnostic de laboratoire disease control disease surveys disease transmission edad elisa encuestas sanitarias epidemiologia epidemiologie epidemiology età fecondazione artificiale feto foetus gestation gravidanza immunity immunità indagini sulle malattie infection infezione inmunidad isolamento isolation isolement laboratory diagnosis morbidite morbidity morbilità morbosidad pcr pestivirus de la diarrea bovina pestivirus della diarrea bovina pestivirus maladie des muqueuses pregnancy rna semen sintomi sperma sperme symptome symptoms taureau test elisa tori toro transmission des maladies trasmissione delle malattie vacas lecheras vacche lattifere