Animal Science Exam 2 Topics
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What percent of the world beef does the U.S make?
25%
1 meat $ maker
Beef
Most consumed meat in U.S
Chicken
What is milk fortified with?
Vitamin D
Milk is mostly what?
Water 87.7%, lactose 4.9%, fat 3.4%
What part is essential to milk production?
Alveoli
Lobule: 150-225
Alveoli
Alveolus is
Milk production unit
What condition causes milk production?
Birth
Epithelial cells
Synthesis and secretion of milk
Myopithelial cells
Contraction for milk ejection
Milk letdown time
60-90 seconds
Hock flexiblity
Sickle hock preferred
Breeding selection priority
Structure, fertility, eye appeal, muscled
What causes dam to give birth?
Fetus
3 stages of parturition
Uterine contractions, birth, expulsion of placenta
What hormone do we go to and from for birth?
Progesterone to estrogen
Normal calf birth pose
Superman pose
Epididymis
Sperm stored here
Testicles
Make sperm
Vas deferens
Sperm transport
Accessory glands
Additional fluid volume to semen
Scrotum
Support of testicles
Ranking of sperm amount
• Boar (prolonged), 2. Bull 3. Ram 4. Stallion