The most important genital diseases of cattle (control, treatment and the hygiene of semen collection)*

This report reviews the infectious diseases (bacterial, protozoal and viral) of cattle which are transmissible by mating or insemination, with reference to pathological consequences, diagnosis and effective prophylactic measures. While brucellosis, campylobacteriosis and trichomoniasis are generally under good control (although sporadic outbreaks may still occur), each disease has its diagnostic problems, which are discussed. The difficulty of controlling IBR/IPV is emphasised. Although chlamydiosis and mycoplasmosis cause only sporadic trouble, these infections should not be disregarded. Health risks associated with embryo transfer are discussed. Hygienic precautions to minimise the health risk of contaminated semen (with occasionally pathogenic bacteria) are discussed.