Factors involved in mastitis control: a comparative study between high and low incidence herds.
D000367:Age Factors; D000818:Animals; D002417:Cattle; D005260:Female; D006799:Housing, Animal; D006920:Hygiene; D007774:Lactation; D008321:Mammary Glands, Animal / Q000293:injuries; D008414:Mastitis, Bovine / Q000453:epidemiology / Q000517:prevention & control*; D008892:Milk / Q000032:analysis / Q000382:microbiology; D011247:Pregnancy; D013290:Streptococcal Infections / Q000662:veterinary; D013292:Streptococcus agalactiae / Q000302:isolation & purification