ANS2L- 7.03- Performance Records

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Performance Records

Understanding Livestock Production Data of Cattle, Swine & Poultry

Multiple Choice

The EPD trait that predicts the average size of calves is:

• maternal milk.

• yearling weight.

• weaning weight.

• birth weight.

Multiple Choice

If the percent heritability of calving interval for a female beef cow is 10 percent, selecting females whose mother has outstanding calving interval records would affect calving intervals of the herd very:

• fast.

• little.

• much.

• slowly.

Multiple Choice

If four bulls have the same pedigree and look the same but their Expected Progeny Differences (EPD) for weaning weight are –34.2,–18.0, +10.5, and +36.9, the bull with which EPD should be selected as the sire to most improve the calf weaning weight in the herd?

• –34.2

• –18.0

• +10.5

• +36.9

Multiple Choice

A bull with an Estimated Breeding Value (EBV) of +60 pounds for yearling weight would have an Expected Progeny Difference (EPD) of +30 pounds because:

• all this trait comes from the mother.

• half the trait comes from the mother.

• percent heritability is 30 percent.

• percent heritability is 50 percent.

Multiple Choice

If the percent of heritability for birth weight is 40, weaning weight is 30, tenderness is 60, and ribeye area is 70 in beef cattle, which trait can be improved the most through selective breeding?

• Birth weight

• Ribeye area

• Tenderness

• Weaning weight

Multiple Choice

Which performance data is a measure of reproduction performance for beef cows?

• Birth weight related to calving difficulty

• Carcass grade

• Efficiency of gain

• Rib eye area

Multiple Choice

The formula that includes number of pigs born alive and adjusted 21-day litter weight for individual sows compared to a contemporary group of sows is the:

• general gilt index.

• growth rate index.

• heritability estimates index.

• sow productivity index.

Multiple Choice

In poultry performance data, a breeding test or a progeny test to determine the ability of a bird to transmit genes for desired characteristics to most of its progeny is an example of:

• future performance. 
• past performance. 
• present performance. 
• rate of gain performance. 

Multiple Choice

In poultry performance data, a breeding test or a progeny test to determine the ability of a bird to transmit genes for desired characteristics to most of its progeny is an example of:

• future performance.

• past performance.

• present performance.

• rate of gain performance.

Multiple Choice

If each bird in the flock is a high performer, the most effective present performance selection method for breeding stock is:

• culling.

• family selection.

• individual selection.

• pedigree.