Beef Cattle Breeds, Genetics, and Production Concepts Quiz

AG103

Longevity is the length of the breeding season in a breeding herd.

True

False

False

Phenotypes are more accurate at predicting progeny performance than breeding values.

True

False

False

The three major breeds of beef cattle in the United States during the early 1900s were:

Shorthorn, Angus, and Hereford

Shorthorn, Simmental, Hereford

Angus, Hereford, Charolais

Hereford, Charolais, Simmental

Shorthorn, Angus, and Hereford

A two breed crossbreeding system will produce less heterosis than a three breed crossing system.

True

False

True

Angus cattle originated in:

Australia

Scotland

Ireland

New Hampshire

Scotland

Postweaning growth is especially important to packers.

True

False

False

Stayability is especially important to the stocker-yearling industry.

True

False

False

Reproductive performance has the greatest economic importance to beef cattle.

True

False

True

Which of the following is not a terminal breed?

Chianina

Limousin

Hereford

Charolais

Hereford

A terminal crossing system produces females that should be marketed as feeders instead of being retained as replacement heifers.

True

False

True

Which dairy breed has the highest level of milk production?

Brown Swiss

Guernsey

Holstein

Jersey

Holstein

Udder evaluation has the highest weighting factor in determining dairy type.

True

False

True

Which of the following is not one of the major dairy cattle breeds in the United States?

Ayshire

Braunvieh

Brown Swiss

Holstein

Braunvieh

The U.S. dairy industry has been able to increase total milk production mostly by increasing the inventory of dairy cows.

True

False

False

What is the average productive life of a dairy cow?

3-4 years

Greater than 10 years

1-2 years

5-6 years

3-4 years

Most dairy cattle in the United States are purebred rather than crossbred because crossbred cattle do not approach the high level of milk production as purebred Holsteins.

True

False

True

Selection indexes are used extensively in dairy cattle genetic improvement.

True

False

True

Efficiency of milk production per 100 pounds of body weight is about the same for the major breeds of dairy cattle.

True

False

True

Which of the following are descriptive of ideal dairy type (select all that apply)?

Long and lean neck

Hide color

Angularity

Milk veins

Mothering ability

Long lean neck

Angularity

Milk veins

Ayrshires and Brown Swiss produce milk over a fewer number of years than Holsteins and their production levels are higher.

True

False

False

The terminal sire index is an effective tool to select breeding females.

True

False

False

Which breed of pig is red with drooped ears?

Yorkshire

Hampshire

Duroc

Landrace

Duroc

The two basic types of swine crossbreeding systems are rotational and terminal cross systems.

True

False

True

Age is the number one reason that sows are culled.

True

False

True

The genetic evaluation program typically used in the swine industry is referred to as:

AHIR

STAGES

DHIA

PSE

TPR

STAGES

Carcass traits evaluated in swine are fat depth over the first rib, ham score, and carcass muscling score.

True

False

False

Which breed of swine has the highest registration numbers?

Large White

Berkshire

Hampshire

Yorkshire

Yorkshire

The primary purpose of seedstock producers is to provide breeding stock for other seedstock producers.

True

False

False

Which of the following is not a distinguishing characteristic of swine?

Hair color

Erect ears

Body confirmation

Drooping ears

Body confirmation

Why are pigs with the PSS gene considered undesirable?

Slow growth

Too much fat

Poorly muscled

Produce carcasses with undesirable quality

Produce carcasses with undesirable quality

The Nubian breed can be found in many colors and is distinguished by long droopy ears and a roman nose.

True

False

True

The Hampshire is a breed that will typically cycle out of season.

True

False

False

Growth and wool traits are positively correlated.

True

False

False

The Cashmere is a breed of dairy goat.

True

False

False

The age of puberty in goats is how many months?

3-7 months

5-12 months

2 months

5-12 months

Sheep and goats have an average gestation of about 200 days.

True

False

False

Visual appraisal is unimportant in making selection decisions in the sheep industry.

True

False

False

Which of the following is a ewe breed?

Hampshire

Montadale

Corriedale

Shropshire

Corriedale

The average length of the estrous cycle in ewes is approximately how many days?

16 days

36 days

7 days

21 days

16 days

Which of the following enterprise types is most likely to utilize white-faced breeds?

Improved pasture

Open range

Drylot

Open range

Sweeney affects the frog of the hoof.

True

False

False

In a mature horse, a hoof will grow 1/4 - 1/2 inch per month.

True

False

True

Toeing-out has no influence on the way the horse will move its feet when traveling.

True

False

False

Which color pattern is not one of the six patterns of an Appaloosa?

Blanket

Solid

Brown Blanket

Roan Blanket

Brown blanket

A horse is said to have a full mouth at about 3 years of age.

True

False

False

Forging occurs when the hind foot hits the shoe of the front foot.

True

False

True

A blemish is a defect which detracts from the appearance of the horse and interferes with its usefulness.

True

False

False

Running walk is a gait unique to the Tennessee Walking Horse.

True

False

True

Cow-hocked is the term used to describe the hock when it has too much set or bend.

True

False

False

Which of the following is a draft horse breed?

Belgian

Shetland

Warmblood

Welsh

Belgian

Traits with high heritability respond most to crossbreeding.

True

False

False

Most of the benefits of heterosis are associated with carcass traits.

True

False

False

Selecting replacement heifers is a straight forward and easy process.

True

False

False

Less than one-quarter of U.S. dairy cows are enrolled in the National Cooperative Dairy Herd Improvement Programs (NCDHIP).

True

False

False

Which of the following genetic types are most common in commercial swine production?

Crossbreeds

Purebreds

Crossbreeds

Dairy goat enterprises tend to be concentrated in the southeastern United States.

True

False

False

Which is not a category of breeding purpose sheep?

Light wool breeds

Ram breeds

Dual-purpose breeds

Ewe breeds

Light wool breeds

The leading breed for registration numbers is

Belgian

Appaloosa

Arabian

Quarter Horse

Quarter horse