Semen test

SEMEN TESTBULL BREEDING SOUNDNESS

EXAMINATIONB.B.S.E.

• 50 NORMAL, CYCLING, DISEASE FREE COWS

• 60% (In 3 weeks) and 90% (In 9 weeks) PREGNANT AT 42 DAYS

FERTILE

COW BULL

MULTIFACTORIAL

COWCYCLING • Nutrition

• Days since calving• Age of puberty

DISEASE FREE

• Pestivirus• Vibriosis• Trichmoniasis• Leptrospirosis• ???????????

HEALTHY UTERINE TRACT

• Infection• Scaring• Cystic Ovary• Freemartin

BULLSOUND

SERVING ABILITY • Mount• Penile Erection and

extension• Intromission (seeking)• Thrust

DISEASE FREE • Pestivirus• Vibriosis• Trichomoniasis• ??????????

SPERMATOZOA • Numbers• Motility• Morphology

COMPONENTSBULL BREEDING SOUNDNESS EXAMINATION

1. PHYSICAL EXAM

2. EXAMINATION OF

REPRODUCTIVE TRACT

3. SCROTAL CIRCUMFERANCE

4. SEMEN COLLECTION AND

EXAMINATION

5. SERVING ABILITY / CAPACITY

• GENERAL HEALTH

• WALKING ABILITY

• NORMAL FEET

• NORMAL LEG

STRUCTURE

PHYSICAL EXAM

• PENIS & PREPUCE

• SCROTUM & TESTICLES

• SEMINAL VESICLES

REPRODUCTIVE TRACT

PENIS AND PREPUCE

SCROTUM & TESTICLES

• 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)– Bos Indicus - Minimum 30 cm @ 2 yrs (2.4:1 L:W)

SCROTAL CIRCUMFERENCE

SCROTAL CIRCUMFERENCE

• ARTIFICIAL VIRGINA (AV)

SEMEN COLLECTION

• ELECTRO-EJACULATION (EJ)

• MASSAGE

• 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

SEMEN EXAMINATION

SEMEN SCORE & MORPHOLOGY

SERVING ABILITY

SERVING CAPACITY

1. KNOCKS OUT WORST BULLS

2. DOES NOT RANK BULLS

3. HIGH PROBABILITY OF BEING FERTILE - NOW

4. NOT A GUARANTEE, BUT A GOOD INDICATION OF POTENTIAL

ENDRESULT

THANK YOU