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Dairy 2017 > 1-50 > Flashcards

1-50 Flashcards

1
Q

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

A

Dairy Farmers of America (DFA)

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2
Q

Hairy Heel Wart is scientifically known as what?

A

Digital Dermatitis

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3
Q

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

A

Milk on Demand

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4
Q

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

A

12-14 weeks

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5
Q

All milking equipment must be sanitized:

A

After each use

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6
Q

Why is fat added to dairy rations?

A

To add a concentrated form of energy

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7
Q

The annual sale of dairy semen exceeds_________straws.

A

20,000,000

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8
Q

What is the average production lifetime of a dairy cow?

A

3 years

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9
Q

A cow’s gestation period is_________long?

A

282 days

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10
Q

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

A

When it is proven that she will breed

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11
Q

The letters FSIS stand for what?

A

Food Safety and Inspection Service

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12
Q

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

A

The influence of the sire of the cow on calving ease

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13
Q

98% of somatic cells are:

A

Leukocytes

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14
Q

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

A

No less than 60% moisture

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15
Q

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

A

Sodium

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16
Q

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

A

Vibriosis

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17
Q

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

A

Enteritis

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18
Q

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

A

Back flushing

19
Q

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

A

Total Digestible Nutrients

20
Q

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

A

Concentrated Animal Feeding Operations

21
Q

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

A

Brucellosis

22
Q

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

A

85

23
Q

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

A

Increase, 5

24
Q

Cows produce pheromones which:

A

Attract the opposite sex

25
Q

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

A

Pass from animals to human and vice versa

26
Q

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

A

50-80%

27
Q

Jersey cattle are characterized by having a ________ face:

A

Dished face

28
Q

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

A

Udder

29
Q

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

A

Two

30
Q

What is the scientific term for birth?

A

Parturition

31
Q

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

A

18

32
Q

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

A

Digestive

33
Q

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

A

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

34
Q

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

A

10

35
Q

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

A

30

36
Q

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

A

70% moisture

37
Q

What is the largest cost on most dairy farms?

A

Feed

38
Q

What hormone is responsible for maintaining pregnancy?

A

Progesterone

39
Q

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

A

Esophageal groove

40
Q

What mineral is necessary for hemoglobin formation?

A

Copper

41
Q

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

A

Epinephrine

42
Q

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

A

Four or more times

43
Q

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

A

Intravenous injection of calcium gluconate

44
Q

What is an anion?

A

A negatively charged ion

Dairy 2017 (2 decks)

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