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Semen test

Semen test. BULL BREEDING SOUNDNESS EXAMINATION B.B.S.E. FERTILE. 50 NORMAL, CYCLING, DISEASE FREE COWS 60% (In 3 weeks) and 90% (In 9 weeks) PREGNANT AT 42 DAYS. multifactorial. COW BULL. CYCLING. Nutrition Days since calving Age of puberty. COW.

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Semen test

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  1. Semen test BULL BREEDING SOUNDNESS EXAMINATION B.B.S.E.

  2. FERTILE • 50 NORMAL, CYCLING, DISEASE FREE COWS • 60% (In 3 weeks) and 90% (In 9 weeks) PREGNANT AT 42 DAYS

  3. multifactorial COW BULL

  4. CYCLING • Nutrition • Days since calving • Age of puberty COW • Pestivirus • Vibriosis • Trichmoniasis • Leptrospirosis • ??????????? DISEASE FREE HEALTHY UTERINE TRACT • Infection • Scaring • Cystic Ovary • Freemartin

  5. SOUND BULL • Mount • Penile Erection and extension • Intromission (seeking) • Thrust SERVING ABILITY • Pestivirus • Vibriosis • Trichomoniasis • ?????????? DISEASEFREE SPERMATOZOA • Numbers • Motility • Morphology

  6. COMPONENTS PHYSICAL EXAM EXAMINATION OF REPRODUCTIVE TRACT SCROTAL CIRCUMFERANCE SEMEN COLLECTION AND EXAMINATION SERVING ABILITY / CAPACITY BULL BREEDING SOUNDNESS EXAMINATION

  7. GENERAL HEALTH • WALKING ABILITY • NORMAL FEET • NORMAL LEG STRUCTURE PHYSICAL EXAM

  8. PENIS & PREPUCE • SCROTUM & TESTICLES • SEMINAL VESICLES REPRODUCTIVE TRACT

  9. Penis and prepuce

  10. Scrotum & testicles

  11. SCROTAL CIRCUMFERENCE • TESTICULAR VOLUME OR WEIGHT • DAILY SPERM PRODUCTION (Cells / gm) • BIGGER NOT NECESSARILY BETTER BUT THERE IS A MINIMUM • Bos Taurus - Minimum 34 cm @ 2 yrs (2:1 L:W) • BosIndicus - Minimum 30 cm @ 2 yrs (2.4:1 L:W)

  12. SCROTAL CIRCUMFERENCE

  13. SEMEN COLLECTION • ARTIFICIAL VIRGINA (AV) • MASSAGE • ELECTRO-EJACULATION (EJ)

  14. Semen examination • GROSS MOTILITY (x100) - Score 1 to 5 (Concentration, % Motile & Velocity) • PROGRESSIVE MOTILITY (x200) 0 – 30% Fail 30 – 60% Multi-Sire > 60% Pass • MORPHOLOGY (x1000) 0 - 50% Fail 50 - 70% Qualified Pass (QF) > 70% Pass

  15. SEMEN SCORE & MORPHOLOGY

  16. SERVING ABILITY SERVING CAPACITY

  17. END RESULT • KNOCKS OUT WORST BULLS • DOES NOT RANK BULLS • HIGH PROBABILITY OF BEING FERTILE - NOW • NOT A GUARANTEE, BUT A GOOD INDICATION OF POTENTIAL

  18. THANK YOU

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