A Sick Sheep is not Always a Dead Sheep
   "A sick sheep is a dead sheep" is a frequently heard statement. To a certain extent, there is some truth to this, but not for reasons commonly believed.
   http://ag.ansc.purdue.edu/sheep/articles/sicksheep.html

Biosecurity in the Sheep Flock
   Questions help determine the risk of disease entering your flock.
   http://www.omafra.gov.on.ca/english/livestock/sheep/facts/health-biosecurity.htm

NAHMS Sheep Reports
   A collection of written reports on the Sheep '95 study conducted by NAHMS.
   http://www.aphis.usda.gov/vs/ceah/cahm/Sheep/sheep.htm

Ontario Ministry of Agriculture - Food and Rural Affairs
   OMAF sheep health information; including information on dealing with diseases, general health, and disposal of dead sheep.
   http://www.omafra.gov.on.ca/english/livestock/sheep/health.html

Reproductive Herd Health
   Springwood Livestock Management Services specializes in herd health, preventative medicine, reproductive problem solving, ultrasounding, synchronization and artificial insemination programs.
   http://www.breedersworld.com/springwood/

Reproductive Problems in Rams
   How to prevent and diagnose reproductive problems of rams in your flock.
   http://ianrpubs.unl.edu/Sheep/g815.htm

Sheep Health & Veterinary Resource Information
   The principal aim of sheepvet.com is to make veterinary resources available to clients in a way which is compatible with them using veterinary services and which will enable them to make best use of those services.
   http://www.sheepvet.com/

Sheep Pregnancy Checking By Ultrasonic Sound
   Ultrasonic sound waves of about 2 million cycles per second can pass through living tissue. Used to determine sheep pregnancy, these sound waves are painless and have no harmful after-effects to the ewe or fetus.
   http://muextension.missouri.edu/xplor/agguides/ansci/g02610.htm

The Use of Vaccines in Sheep
   Provides information on what a vaccine is, what vaccines to use for sheep, how to store vaccines, and when and how to administer vaccines to sheep. For sheep producers and veterinarians.
   http://www.extension.umn.edu/distribution/livestocksystems/DI5749.html

Vaccinations in Sheep Flocks
   Vaccinations are part of a health management program that yields a high return per dollar invested. Considerations and preventive vaccines.
   http://ianrpubs.unl.edu/animaldisease/g849.htm