2015 SR Exam Questions Flashcards

1
Q

What breed of dairy cattle comes in colors of red, white and roan?

A

milking shorthorn

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2
Q

Name a factor that that might be considered when establishing milking groups.

A

body condition, lactation number, stage of lactation, production, reproductive status

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3
Q

Which volatile fatty acid is the primary source of energy and milkfat?

A

acetic acid

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4
Q

What are the basic building blocks of carbohydrates?

A

monosaccharides or simple sugars

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5
Q

Which is more expensive: whole milk, reduced fat milk, or fat-free milk

A

whole milk

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6
Q

WHich parent determines the sex of the off spring?

A

sire

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7
Q

What class of milk is used to make butter and milk in dried form?

A

Class IV

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8
Q

COws that are not cycling properly from a reproductive standpoint are called what?

A

cystic

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9
Q

Name the season of the year when retained placenta incidence is highest?

A

summer

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10
Q

WHat term describes a calf that is born where the tail and the butt come first?

A

breach

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11
Q

As the temperature humidity index rises above what degree, do cows become heat stressed?

A

64º - 70º

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12
Q

According to Dairy Herd Management, what substance can be used in place of concrete in the floors of bunker silos? Is it typically cheaper than concrete and lasts many years longer.

A

asphalt

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13
Q

What hormone produced by the corpus luteum is necessary for maintenance of pregnancy?

A

progesterone

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14
Q

What are the 3 places where pathogenic organisms may gain entry into a newborn calf’s body?

A

mouth, nose, navel

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15
Q

What is the enzyme that breaks down butterfat?

A

lipase

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16
Q

What is the hormone released by the pineal gland in response to longer daylight?

A

melatonin

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17
Q

What does the acronym BTSCC stand for?

A

bulk tank somatic cell count

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18
Q

What term is given to the percent of services that result in a pregnancy?

A

conception rate

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19
Q

The Hoard’s Dairy Judging Contest consists of how many classes?

A

5 classes

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20
Q

How many upper front teeth does a cow have?

A

0

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21
Q

Yogurt must contain a minimum of how much fat?

A

3.25%

22
Q

Which mineral is most likely to cause toxicity in dairy cattle?

A

copper

23
Q

You purchased 100 pounds of 8-12-10 fertilizer. How many pounds of nitrogen are in the fertilizer?

A

8 pounds

24
Q

As a plant ages, what happens to the digestibility?

A

decreases

25
Q

In udder anatomy, what is strutting?

A

condition where the teats point out too much

26
Q

Frozen colostrum can be safely stored for how long?

A

1 year

27
Q

What is the most popular milk sold in the U.S.?

A

2% Milk

28
Q

What term describes the cyclic opening and closing of the teat cup liner in a milking system?

A

pulsation

29
Q

What nutrient comprises approximately 75% of a cow by weight?

A

water

30
Q

During the final stages of fermentation, silage should be at what temperature?

A

80-85ºF

31
Q

Name the two classifications of amino acids.

A

essential and non-essential

32
Q

The Department of Public Works in Milwaukee, Wisconsin is using what cheesy new enemy for icy roads?

A

cheese brine

33
Q

What are two heat detection aids that can be used on a dairy farm?

A

heat expectancy charts, tail chalk, pedometers, accelerometers, pressure sensors, electronic heat detection systems, detector animals

34
Q

Most milks are fortified with Vitamin D. Why is Vitamin D important in the diet?

A

builds strong bones and teeth; helps with calcium absorption

35
Q

What part of the animal is used as a reference point to determine the height of the udder floor?

A

hock

36
Q

What mineral is deficient if you see white muscle disease, low fertility, or retained placenta?

A

selenium

37
Q

How many pounds of milk does it take to make one pound of authentic Greek yogurt?

A

4 pounds

38
Q

At what age does a calf begin to chew its cud?

A

2-3 weeks

39
Q

What is the name of the new facility that replaced the old dairy barns at the site of the World Dairy Expo?

A

New Holland Pavilion

40
Q

What is one reason brown midrib corn varieties are desirable in a lactating cow’s ration?

A

decreased lignin content, increased fiber digestibility

41
Q

What is another term for mastication?

A

chewing cud

42
Q

What does PTI stand for in terms of genetics?

A

Production-Type Index

43
Q

What is the proper name for Mad Cow Disease?

A

Bovine SPongiform Encephalopathy

44
Q

Which acid found in milk had been shown to prevent cancer?

A

conjugated linoleic acid CLA

45
Q

Assuming a 100% heat detection rate, how many cows would be pregnant after the third breeding in a 200 cow breeding herd, with a 50% conception rate?

A

175

46
Q

What is often added to fat free milk to whiten it?

A

titanium dioxide

47
Q

A deficiency in this vitamin causes loss of hair and excess salivation?

A

riboflavin (Vitamin B)

48
Q

How many pounds of silage at 50% moisture must be fed to have 1000 pounds of dry matter?

A

2000 pounds

49
Q

On average, what percent of cows experience clinical milk fever, characterized by a blood calcium level less than 5 mg/dL?

A

5%

50
Q

What cells in a cow’s body contain no nucleus?

A

erythrocytes, red blood cells