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.

 

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Haemophilus Somnus

Haemophilus Somnus-A bacterial infection.

Clinical Symptoms

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

Prevention

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

Treatment

  • Sulfonamides
  • Oxytetracycline

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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

Outbreeding

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

Sigmoid Flexure

Sigmoid Flexure– The s-shaped curvature of the penis when it is retracted in the body. During sexual excitation, and erection, the sigmoid flexure disappears when the penis straightens.