Horse Health Glossary

Not sure what that veterinary word means? Look it up below!

Reprinted with permission from the University of California, Davis, The Book of Horses edited by Mordecai Siegal.

ZONA PELLUCIDA:
Thick, transparent outer envelope or casing that surrounds an ovum (egg).
ZOONOSIS, ZOONOTIC DISEASE:
Any disease that can be spread between animals and human beings; examples include plague, rabies, salmonellosis, and ringworm.
ZOOSPORE:
The motile, infective stage of Dermatophilus congolensis, the cause of a skin disorder known as dermatophilosis.
ZYGOTE:
Fertilized ovum (egg).

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