2017 SR Written Exam Questions

Question 1

What category on the PDCA Dairy Cow Unified Scorecard receives the most points?

Answer 1

Udder

Question 2

Breed of dairy cattle originated in Scotland?

Answer 2

Ayreshire

Question 3

Of the three major contagious pathogens, Strep ag., Staph aureus, and Mycoplasma sp., which should be suspected in herds when multiple cows have clinical mastitis in more than one quarter, but show few if any symptoms?

Answer 3

Mycoplasma sp.

Question 4

Acetic, Butyric and Propionic acid are produced in what part of the ruminant digestive system?

Answer 4

Rumen

Question 5

Is the vulva becoming red and swollen is a sign of what in cattle?

Answer 5

Calving or heat

Question 6

What is the liquid used in freezing and storing semen?

Answer 6

Nitrogen

Question 7

What percentage of solids is in whole milk?

Answer 7

12.6%

Question 8

What type of storage facility stores liquid manure?

Answer 8

lagoon

Question 9

What body system does Johne’s disease attack?

Answer 9

digestive

Question 10

What is the enzyme that breaks down butterfat?

Answer 10

lipase

Question 11

What disease in cattle is caused by a bacterium of the genus Brucella?

Answer 11

Brucellosis

Question 12

A locus is the position that a given gene occupies on what?

Answer 12

chromosome

Question 13

Inbreeding can decrease mature equivalent (ME) milk production by how many pounds per lactation for each percent increase in inbreeding?

Answer 13

60-80 pounds

Question 14

What mineral deficiency causes anemia?

Answer 14

Iron

Question 15

Name the unit of measure of energy in a feed, also known as the amount needed to raise 1 g of water 1°C?

Answer 15

Calorie

Question 16

Of the nine essential nutrients found in milk, which one helps build red blood cells that carry oxygen from the lungs to working muscles in a human?

Answer 16

Vitamin B12

Question 17

Semen for artificial insemination should be thawed in clean water heated to what temperature?

Answer 17

90-95º

Question 18

What is the name of the international Bull evaluation service based in Uppsalla, Sweden?

Answer 18

INTERBULL

Question 19

How many teeth does an adult dairy cow have?

Answer 19

32

Question 20

Name one of the two most limiting amino acids in dairy cattle nutrition?

Answer 20

lysine, methionine

Question 21

What genetic defect has been discovered in the Holstein breed denoted by the letters HCD?

Answer 21

Haplotype for Cholesterol Difiency

Question 22

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

Answer 22

heat expectancy chart, tail chalk, pedometers, accelerometer, pressure sensors, electronic heat detection systems, detector animals

Question 23

Discussing fertilizer recommendations, P2O5 is the abbreviation for what nutrient?

Answer 23

phosphate

Question 24

Cellulose and hemicellulose are examples of what type of carbohydrates that the cow can use as a source of energy?

Answer 24

structural

Question 25

How many pounds of milk does it take to make 1 pound of authentic Greek yogurt?

Answer 25

4

Question 26

Name the most common cause of high standard plate counts?

Answer 26

dirty milking equipment, poor cleaning of milking systems

Question 27

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

Answer 27

mouth, navel, nose

Question 28

What disease is caused by Mycobacterium Paratuberculosis?

Answer 28

Johne’s

Question 29

You should remove how many inches of silage from the silage face daily to reduce spoilage?

Answer 29

6 inches

Question 30

High grain diets are typically fed in the United States. Starch digestion is the key to optimizing what 2 nutrients?

Answer 30

protein and energy

Question 31

What is the 18-carbon fatty acid present in milk, particularly in grazing cattle, which has been found to have cancer prevention effects?

Answer 31

CLA - conjugated linoleum acid

Question 32

Where is bile stored in a dairy cow?

Answer 32

gall bladder

Question 33

Name two of the four phases of a fly’s life cycle?

Answer 33

egg, larvae, pupa, adult

Question 34

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

Answer 34

5%

Question 35

When breeding in cold weather, thawed semen should be kept warm. What should an inseminator do with the AI gun between thawing the semen and breeding the cow or heifer?

Answer 35

Tuck AI gun under clothing to keep warm

Question 36

What is the difference between essential amino acids and non-essential amino acids?

Answer 36

essential amino acids ARE NOT produced by the cow and need to be fed, non-essential amino acids ARE produced by the cow and do not need to be fed in the diet

Question 37

What year was the first national dairy show held in Chicago?

Answer 37

1906

Question 38

Milk processors may ensure a quality product by using this test, which measures bacteria not killed by heating milk to 143°F for 30 minutes?

Answer 38

LPC laboratory pasteurization count

Question 39

What is the common term for leukocytes?

Answer 39

white blood cells

Question 40

What is the most common grain fed to dairy cows in the United States

Answer 40

corn

Question 41

What is the thickening of the skin that lines the teat canal and surrounds the external orifice called?

Answer 41

hyperkeratosis

Question 42

What does TLC stand for in regards to harvesting forages?

Answer 42

theoretical length of cut

Question 43

Name one of the two kinds of on-farm practices that Coliform counts in milk directly reflect?

Answer 43

hygiene, sanitation

Question 44

What is the predominant class of immunoglobulins found in bovine colostrum?

Answer 44

IgG

Question 45

Throughout the world what number is used as an indicator of milk quality?

Answer 45

SCC somatic cell count

Question 46

Which former Maryland 4-H’er was recently hired as the Director of Animal Care for the National FARM Program?

Answer 46

Emily Yeiser Strepp

Question 47

What does APHIS stand for?

Answer 47

Animal Plant Health Inspection Service

Question 48

Name the only breed of dairy goat developed in the United States?

Answer 48

LaMancha

Question 49

Name 2 cultured dairy products.

Answer 49

yogurt, sour cream, buttermilk, acidophilusilus milk, cheese

Question 50

Fertilization takes place in which part of the reproductive system?

Answer 50

oviduct (fallopian tube)