[Epidemiology of the reproduction disorders in dairy cattle. Relation between the characteristics of the sick animal - the disease and production]

abortion aborto artificial insemination avortement cetosas ciclo estral ciclo estrale cisti ovariche classement classificazione cycle oestral dairy cows diagnosi diagnosis diagnostic distocia dystocia dystocie endometrite endometritis fecondazione artificiale grading ketose ketoses kyste ovarien lactation lattazione mammite mastite mastitis milk production oestrous cycle ovarian cysts produzione del latte vacas lecheras