Vas Deferens

Vas Deferens– (ductus deferens), the duct derived from the mesonephric duct that connects the tail of the epididymis to the ampulla and transports sperm into the pelvic urethra.



Bovine Virus Diarrhea (BVD)

Bovine Virus Diarrhea (BVD) is a disease caused by a virus, resulting in numerous problems, such as damage to the digestive and immune systems, pneumonia, abortions, calf deformities, and others. Incomplete vaccination programs, such as those omitting a needed booster …

Birth Weight-(beef cattle)

Birth Weight -(beef cattle)The weight of a calf within 24 hours after birth.

  • Estimated Progeny Differences- (EPD’s) of the sire and dam are used to evaluate the genetic performance of the sire and dam to help determine birth weight before

Haemophilus Somnus

Haemophilus Somnus-A bacterial infection.

Clinical Symptoms

  • fever
  • incoordination
  • head-pressing
  • central nervous system signs


  • vaccine (two injections)
    • chlortetracycline, 350 mg/head/day for 28 days
    • oxytetracycline, 3-5 mg/lb daily for 4 days


  • Sulfonamides
  • Oxytetracycline



Outbreeding– The process of continuously mating females of the herd to unrelated males of the same breed.

Forms of Outbreeding:

  • Outcrossing- the mating of unrelated animals
  • Grading up- the mating of purebred sires to nondescript or grade females and