2013 JR Exam Questions

Question 1

The “Red Bloodlines” is the breed publication of which breed?

Answer 1

Red and White Holstein

Question 2

The practice of flushing an embryo from one cow and placing it in another is known as what?

Answer 2

embryo transfer

Question 3

What milk component affects the amount of cheese one can get from a pound of milk?

Answer 3

protein

Question 4

What dairy breed is known for producing milk with a golden color?

Answer 4

guernsey

Question 5

What is another name for twisted stomach?

Answer 5

displaced abomasum

Question 6

Which breed of dairy cattle produces milk witht the highest percent of butterfat?

Answer 6

Jersey

Question 7

What is green chop?

Answer 7

forages harvested in the field and fed directly to livestock (not stored like silage)

Question 8

The walls of the rumen are lined with tiny projections called what?

Answer 8

papillae

Question 9

What logo is found on dairy products to show they are true dairy products?

Answer 9

real seal

Question 10

What vitamin is added to milk during processing to help prevent rickets?

Answer 10

vitamin D

Question 11

What do the initial A.I. stand for when talking about breeding cows?

Answer 11

artificial insemination

Question 12

What is the most common type of milking parlor in use today?

Answer 12

herringbone

Question 13

What is used to identify Brucellosis in cattle?

Answer 13

milk ring test

Question 14

What is another name for the corpus luteum?

Answer 14

yellow body

Question 15

What is the main function of the omasum?

Answer 15

dehydration of feed

Question 16

Undigested feed and waste is excreted through where?

Answer 16

anus

Question 17

In which country did the Ayrshire breed originate?

Answer 17

Ayr, Scotland

Question 18

In the rumen, carbohydrates are converted into VFA’s. What does VFA stand for?

Answer 18

volatile fatty acid

Question 19

What is the only part of the milking system that touches the cow?

Answer 19

teat cup liner

Question 20

Who is the current Secretary of Agriculture?

Answer 20

Tom Vilsack

Question 21

What city holds the National 4-H Dairy Conference?

Answer 21

Madison, Wisconsin

Question 22

What is the normal respiratory rate for a cow?

Answer 22

30 breaths per minute

Question 23

What is the primary digestive process in the rumen?

Answer 23

fermentation of feedstuffs

Question 24

The main type of mastitis that is characterized by visible abnormalities in the udder or in the milk is called what?

Answer 24

clinical mastitis

Question 25

What do the letters USDA stand for?

Answer 25

United Sates Department of Agriculture

Question 26

The process that destroys disease producing bacteria is called what?

Answer 26

pasteurization

Question 27

How long after birth should a calf be fed colostrum?

Answer 27

3 days

Question 28

What is a record of ancestry?

Answer 28

pedigree

Question 29

What is the primary protein found in milk

Answer 29

casein

Question 30

Wrapped round bales of silage are called what?

Answer 30

baleage

Question 31

What breed is the smallest dairy breed?

Answer 31

Jersey

Question 32

What is the name for the clusters of milk secreting cells in the udder of the dairy cow?

Answer 32

alveoli

Question 33

What are two structural carbohydrates that the dairy animal can use as a source of energy?

Answer 33

cellulose and hemicellulose

Question 34

What is the process that turns cream into butter?

Answer 34

churning

Question 35

On average, how many days are there between heat periods in a dairy cow?

Answer 35

21 days

Question 36

As soon as the cow leaves the milking parlor is a peak time for cuncumption of what nutrient?

Answer 36

water

Question 37

Why do farmers put a K-Mar patch on the rump of their cows?

Answer 37

to detect heat

Question 38

What is the method of permamnent ID for the Ayrshire breed?

Answer 38

photo or sketch

Question 39

When is the most effective time to treat mastitis infections?

Answer 39

at dry off

Question 40

How many teeth does a mature cow have?

Answer 40

32

Question 41

Which of the cow's stomach compartments is the largest?

Answer 41

rumen

Question 42

Where is the correct place to give an intramuscular shot/

Answer 42

neck

Question 43

What category receives the most points under the PDCA Dairy Cow Unifed Scorecard?

Answer 43

udder (40)

Question 44

Approximately how much blood must be pumped through the udder to produce one pound of milk?

Answer 44

400 pounds

Question 45

Classification is the term used when you compare a cow or a doe to what?

Answer 45

the ideal for her breed

Question 46

When showing a dairy animal, which direction should you parade before the judge?

Answer 46

clockwise

Question 47

Name three methods one can use to change a population's genetic make-up.

Answer 47

migration, mutation, selection

Question 48

What three colors are found in registered Holsteins?

Answer 48

red, black, white

Question 49

What is the normal body temperature of a haelthy calf?

Answer 49

102.5 degrees

Question 50

What state has the highest number of dairy cows?

Answer 50

California