While the focus of our project is Artificial Insemination, our work first focused on the the ram by learning about breeding soundness exams (BSE).  A BSE is a relatively simple test to evaluate a ram’s suitability for breeding. This test is of value to every sheep operation and is essential for rams used in AI.  It consists of a physical examination, an inspection of the reproductive organs, and an evaluation of a semen sample. 

Dr. Craig Zimmerly, DVM  is demonstrating the correct use of a scrotal tape as part of this ram's BSE.  Research has shown that rams with large scrotal measurements not only produce more semen than rams with smaller scrotal measurements but will also have progeny that reach puberty earlier.

 The Society for Theriogenology recommends the following breeding program standard values for scrotal circumference:

Rams 8 months to 14 months

    < 30 cm questionable

    30 - 36 cm satisfactory

    > 36 cm exceptional

Rams > 14 months old

   < 32 cm questionable

   32 - 40 cm satisfactory

   > 40 cm exceptional