Livestock Breeding Systems

Livestock Breeding Systems

by Thomas Alberts

Review Quiz!!​

​

Multiple Choice

Which of the following is NOT a step when designing a breeding program?

• Setting goals

• Choosing and weighing traits

• Choosing offspring

• Devising a strategy for selecting parents

Multiple Choice

For which of the following EPD figures is a negative number more desirable?

• Days to 250 and Backfat

• Days to 250 and Loin Eye Area

• Backfat and Pounds of Lean

• Pounds of Lean and Days to 250

Multiple Choice

Which of the following is NOT a way to select parents in a breeding program?

• Grading up

• Visual selection

• Pedigree

• Expected Progeny Differences

Multiple Choice

These bulls will be used in a rotational crossbreeding program. Bulls will be mated to both cows and heifers. The producers wants to maintain cow size at 1,150 to 1,250 pounds. Feed and labor are adequate. The top 40 percent of heifer calves will be retained, with the remainder of the cattle finished in a feedlot. Which bull best fits the scenario?

• Bull 1

• Bull 2

• Bull 3

• Bull 4

Multiple Choice

These gilts will be used as replacements in a purebred Yorkshire herd. The profit is mainly from the sale of performance tested boars and gilts to commercial swine operations, however, a few purebred boars are sold as herd sires. Hogs are raised in total confinement. Which gilt best fits the scenario?

• Gilt 1

• Gilt 2

• Gilt 3

• Gilt 4