See the link: https://vikaspedia.in/agriculture/livestock/general-management-practices-of-livestock/common-animal-diseases-and-their-prevention-and-treatments
in fact there are many diseases can affecting producing cows either reared for milk or for meat production. such diseases can classified as bacterial, viral, parasitic and rickettsia. in addition to mastitis
The most important diseases in dairy cows are subclinical and clinical mastitis, brucellosis, Black quarter, FMD, Bovine Herpes virus infections, endometritis, tympany, milk fever.
Hello, in my opinion, the most important diseases that have a negative effect on the production of dairy cows include mastitis. F.M.D, brucellosis and metritis.