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

A BCS of 5–6 at calving ensures adequate energy reserves for milk production and rebreeding.

Question 2

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

Accepted Answer

283 days

Answer

The average gestation period for beef cattle is approximately 283 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

Modified live IBR/BVD/PI3/BRSV vaccines are routinely used to protect breeding heifers from reproductive diseases.

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

Estrus synchronization tightens the calving window, allowing producers to manage labor, creep feeding, and weaning more uniformly.

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

EPDs express the expected difference in performance of a sire's offspring compared to the breed average for traits like birth weight and weaning weight.

(CAC) Certified Agricultural Consultant Practice Test

(CAC) Certified Agricultural Consultant Practice Test

CAC CAC Livestock & Animal Science