CAC CAC Livestock & Animal Science

Question 1

Which body condition score (BCS) range is generally considered optimal for beef cows at calving?

Accepted Answer

5–6

Answer

1–2

Answer

3–4

Answer

7–8

Question 2

The gestation length for a beef cow is approximately how many days?

Accepted Answer

283 days

Answer

200 days

Answer

245 days

Answer

310 days

Question 3

Which of the following vaccines is part of a standard pre-breeding vaccination program for beef heifers in the US?

Accepted Answer

IBR/BVD/PI3/BRSV (modified live)

Answer

Rabies only

Answer

Foot-and-mouth disease

Answer

Equine influenza

Question 4

What is the primary purpose of synchronizing estrus in a beef cow herd?

Accepted Answer

Compress the calving season for management efficiency

Answer

Increase milk production

Answer

Reduce feed costs

Answer

Prevent dystocia

Question 5

Expected Progeny Differences (EPDs) are used by beef producers primarily to:

Accepted Answer

Predict the genetic potential of offspring for specific traits

Answer

Calculate feed conversion ratios

Answer

Determine vaccination schedules

Answer

Estimate land carrying capacity

Question 6

Which internal parasite most significantly impacts weight gain in stocker cattle on US pastures?

Accepted Answer

Barber pole worm (Haemonchus contortus)

Answer

Liver fluke (Fasciola hepatica)

Answer

Tapeworm (Moniezia spp.)

Answer

Lungworm (Dictyocaulus spp.)