The causal organism of mastitis in cattle is? by Sunday | Jul 5 | Agricultural Science WAEC | 0 comments A. fungus B. bacterium C. virus D. protozoan E. worm Correct Answer: Option B – bacterium Users Also Read These:The causal organism of anthrax in farm animals is known as?An organism that habours another organism is referred to as?Mastitis is a disease which affects the?An example of a humpless cattle is?A castrated male cattle is called a?