1. Introduction to Animal Science
Part I
All breed photos:

2. Terms Male that has not been castrated Cattle: bull Swine: Boar
Chicken: Rooster
Turkey: Tom

3. Terms Male castrated when young Male castrated after reaching maturity
Cattle: steer
Swine: Barrow
Poultry: Capon
Male castrated after reaching maturity
Cattle/swine: stag

4. Terms Young female that has not given birth
Cattle: Heifer
Swine: Gilt
Older female that has given birth
Cattle: Cow
Swine: Sow

5. Terms
Baby
Cattle: Calf
Swine: Pig
Older poultry females are hens and younger female chickens are pullets

6. External parts Anatomy Conformation Visual observations
science of body structure or parts of an animal
Conformation
How well the parts of an animal fit together
Visual observations
used to select breeding cattle or swine include conformation, breed character, structural soundness of feet and legs, and body capacity

7. Emphasis on parts used to select or evaluate cattle such as the rump, round, loin, shoulder, brisket, switch, poll, flank, hock, ribs, heart girth, and pin bones

8. Emphasis on parts used to select or evaluate swine such as the ham, loin, shoulder, rump, belly, jowl, pastern, side, and hock

9. Emphasis on parts used to select, cull, or evaluate poultry such as:
comb, wattles, beak, eye ring, ear lobe, vent, hock, shank, toes, breast, back, abdomen, and body