livestock reproduction

What two things are needed for reproduction?

1. A sperm

2. A timely egg

What are 5 advantages of artificial insemination ?

1. Control infectious disease

2. Control genetics

3. Control fertility

4. Reduce injury

5. Eliminate danger

What are 5 disadvantages of artificial insemination?

1. Expensive

2. Records

3. Hormones

4. More labor

5. Equipment

Semen collected should be examined for what three things ?

Morphology

Motility

Concentration

What 3 should penis be examined for during semen collection ?

Injury

Warts

Abnormality

How is semen for bulls preserved

Liquid nitrogen

How long can boar semen he refrigerated for

7 days

T/f stallion semen doesn’t preserve well so use ASAP

True

Why do bulls exhibit more aggressive behavior than steers

Testosterone

What is flehmen

Olfactory reflex curls lip up after smelling urine

What is proestrus vs estrus

Getting ready for heat and in heat

What are 3 reproductive behaviors of swine?

Females seek out boar

Lock legs

Pop up ears

What do horses do when they ejaculate

Flag his tail lower it down

Carole ovulate how many hours after heat

24-30

What are three things a bull may do to a. Female ?

Lose interest

Guard her

Nuzzle her

How long prior to ovulation should cattle be inseminated

6-8 hours

Identify these secondary abnormalities

Coiled tail

Bent tail

Proximal droplet

Translocating droplet and bent tail

Identify these secondary abnormalities

Abaxial midpiece

Double midpiece

Coiled midpiece

Identify these primary abnormalities

1. Pyriform head

2. Tapered head

3. Small head