1-50

Question 1

Which one of the following is the largest dairy milk marketing cooperative in the U.S.?

Answer 1

Dairy Farmers of America (DFA)

Question 2

Hairy Heel Wart is scientifically known as what?

Answer 2

Digital Dermatitis

Question 3

New computerized robotic milk stations are becoming a reality today. They have different names but one common one is MOD system. MOD means:

Answer 3

Milk on Demand

Question 4

On average, how many weeks after freshening does a cow’s dry matter intake peak?

Answer 4

12-14 weeks

Question 5

All milking equipment must be sanitized:

Answer 5

After each use

Question 6

Why is fat added to dairy rations?

Answer 6

To add a concentrated form of energy

Question 7

The annual sale of dairy semen exceeds_________straws.

Answer 7

20,000,000

Question 8

What is the average production lifetime of a dairy cow?

Answer 8

3 years

Question 9

A cow’s gestation period is_________long?

Answer 9

282 days

Question 10

When can a heifer calf born twin to a bull be registered?

Answer 10

When it is proven that she will breed

Question 11

The letters FSIS stand for what?

Answer 11

Food Safety and Inspection Service

Question 12

In a sire’s proof, daughters’ calving ease measures ____________.

Answer 12

The influence of the sire of the cow on calving ease

Question 13

98% of somatic cells are:

Answer 13

Leukocytes

Question 14

Corn silage stored in sealed upright silos should ensiled at what moisture?

Answer 14

No less than 60% moisture

Question 15

Which mineral functions in maintaining osmotic pressure, acid-base balance, and body fluid balance?

Answer 15

Sodium

Question 16

A disease transmitted through natural mating which causes abortion, low conception rates, and irregular heat cycle is ___________.

Answer 16

Vibriosis

Question 17

Coccidia infection can occur when calves are 4-8 weeks old. Coccidia causes:

Answer 17

Enteritis

Question 18

In the standard protocol for cleaning milking equipment, which of the following is not one of the four phases of cleaning?

Answer 18

Back flushing

Question 19

When evaluating a dairy ration, what do the letters TDN stand for?

Answer 19

Total Digestible Nutrients

Question 20

Most dairies in Texas are considered to be CAFO’s. A CAFO is:

Answer 20

Concentrated Animal Feeding Operations

Question 21

Abortion in the last trimester of pregnancy is often caused by________.

Answer 21

Brucellosis

Question 22

Dairy herds have historically used artificial insemination. Currently approximately _________% of all dairy pregnancies results from A.I.

Answer 22

85

Question 23

If you add sugar to a milk product, you must________the minimum pasteurization temperature by ____ Fahrenheit.

Answer 23

Increase, 5

Question 24

Cows produce pheromones which:

Answer 24

Attract the opposite sex

Question 25

Dairy producers are particularly watchful for zoonotic diseases in their heard. Zoonotic diseases are defined as those that:

Answer 25

Pass from animals to human and vice versa

Question 26

When using sexual semen, conception rates________% of the conception rates achieved when using unsexed semen under the same conditions?

Answer 26

50-80%

Question 27

Jersey cattle are characterized by having a ________ face:

Answer 27

Dished face

Question 28

Which trait is worth the most points according to the Dairy Cow Unified Score Card?

Answer 28

Udder

Question 29

In the reproductive tract of a dairy cow, how many uterine horns are there?

Answer 29

Two

Question 30

What is the scientific term for birth?

Answer 30

Parturition

Question 31

Crude fiber in a dietary ration must be at least _________% or milk fat percent will decrease.

Answer 31

18

Question 32

Which system of the cow's body is most affected by paratuberculosis?

Answer 32

Digestive

Question 33

Dairy cows produce milk that is relatively high in B complex vitamins. Because they are ruminants:

Answer 33

It is not necessary to supplement the intake of Vitamin B complex

Question 34

How many grams of lactose are in an 8oz. glass of milk?

Answer 34

10

Question 35

How many chromosomes does the nucleus of each reproductive cell have in dairy cattle?

Answer 35

30

Question 36

What percent moisture should corn silage be chopped at when stored in horizontal bunker silos?

Answer 36

70% moisture

Question 37

What is the largest cost on most dairy farms?

Answer 37

Feed

Question 38

What hormone is responsible for maintaining pregnancy?

Answer 38

Progesterone

Question 39

What pathway in young calves directs milk into the abomasum, bypassing the rumen, reticulum, and omasum?

Answer 39

Esophageal groove

Question 40

What mineral is necessary for hemoglobin formation?

Answer 40

Copper

Question 41

Fear can disrupt milk letdown in a cow. The hormone released that causes this disruption is:

Answer 41

Epinephrine

Question 42

Recent research traits have shown that dairy cows prefer to be milked ______times/day if they are able to choose.

Answer 42

Four or more times

Question 43

Dairy cattle frequently develop milk fever shortly after calving. They become immobile, comatose, and may die w/o treatment. The treatment typically involves:

Answer 43

Intravenous injection of calcium gluconate

Question 44

What is an anion?

Answer 44

A negatively charged ion