WorksheetsDairy Preliminary Test Bank
Total questions: 100
Worksheet time: 50mins
When did the first cows arrive at the Jamestown Colony?
1607
1611
1674
1632
Who developed the Babcock test?
Gail Borden
S.M. Babcock
Dr. Lindahl
Harvey Thatcher
Which year was the first commercial cheese factory established?
1840
1851
1877
1904
The Morrill Act created what system?
DHIA
Land Grant Colleges
Federal Milk Orders
Cooperative Extension
Hoard's Dairyman was first published in:
1846
1880
1885
1906
What does DHIA stand for?
Dairy Heifer Industry Alliance
Dairy Herd Improvement Association
Dairy Health Inspection Association
Dairy Buying Innovation Association
The Journal of Dairy Science is published by:
ADSA
NMPF
DHIA
DFCFA
The National Dairy Shrine Museum is located in:
Madison, WI
Stratford, IA
Fort Atkinson, WI
Beloit, WI
USDA's research arm is the:
ARS
APHIS
FSA
CCC
Which organization oversees interstate milk shipment standards?
NIFA
NCIMS
FSA
DFA
Which dairy breed originated in Switzerland?
Ayrshire
Brown Swiss
Jersey
Guernsey
Which breed has milk known for its golden color?
Jersey
Guernsey
Ayrshire
Milking Shorthorn
The smallest dairy breed by size is:
Jersey
Ayrshire
Holstein
Guernsey
Holsteins make up what percent of U.S. cows?
50%
70%
90%
60%
The major reason Holsteins dominate the U.S. dairy industry is:
Highest milk volume
Highest components
Smallest body size
Oldest breed
On the unified scorecard, the udder category is worth:
25 points
30 points
35 points
40 points
The hock is used to determine:
Body depth
Udder floor height
Teat length
Breed character
How many animals are in a 4-H judging class?
3
4
5
6
Which leg position is correct for showing a heifer?
Near leg forward
Near leg back
When showing a cow (not a heifer), the rear leg nearest the judge should be:
Back
Forward
Straight
Raised
Colostrum should be fed within how many hours?
1 hour
2 hours
5 hours
12 hours
High-quality colostrum contains at least how many grams of IgG?
25 g/L
50 g/L
100 g/L
75 g/L
Calves should be weaned when consuming how much starter?
1 lb/day
1.5 lb/day
2-3 lb/day
5-6 lb/day
The leading cause of death in young calves is:
Pneumonia
Scours
Bloat
Navel infections
A calf’s rumen is fully functional by:
2 months
4-5 months
6-8 months
8+ months
What is the most limiting nutrient for high-producing cows?
Water
Calcium
Protein
Energy
Which VFA is the precursor for glucose?
Acetate
Butyrate
Propionate
Lactate
A mature cow produces how much saliva per day?
30-40 quarts
20-30 quarts
50-60 quarts
100-140 quarts
The major buffering agent in the rumen is:
Sodium chloride
Bicarbonate
Magnesium oxide
Maximum recommended fat in a lactating ration is:
3-4%
5-7%
10-12%
15%
The rumen makes up what percent of the newborn calf’s stomach?
10%
25%
50%
80%
The primary acid in the abomasum is:
Acetic
Butyric
Hydrochloric
NDF predicts:
Mineral content
Intake
Protein content
Energy density
ADF should be what percent for high-producing cows?
12-14%
15-17%
18-21%
22-24%
Lactic acid is the preferred acid in:
Milk
Rumen
Silage fermentation
Colostrum
Kernel processing in corn silage improves:
Fiber digestibility
Fat content
Starch digestibility
Moisture content
Brown midrib corn has lower levels of:
Starch
Protein
Lignin
Sugar
Ionophores increase which VFA?
A. Acetate
B. Propionate
Milk urea nitrogen (MUN) target range is:
2-4 mg/dL
6-8 mg/dL
8-14 mg/dL
14-18 mg/dL
A cow has how many teeth?
20
28
30
32
Which hormone causes milk letdown?
Estrogen
Oxytocin
Progesterone
IGF-1
Adrenaline interferes with milk letdown for:
5 minutes
10 minutes
30-40 minutes
1 hour
Cows milked 3x daily produce how much more milk?
2-4%
5-7%
10-15%
20-25%
The correct prep lag time before attaching the unit is:
10 seconds
20 seconds
30 seconds
60-90 seconds
A liner should be replaced every:
250 milkings
500 milkings
1,000-1,200 milkings
2,000 milkings
The main reason to post-dip teats is to prevent:
Milk fever
New infections
Lameness
High SCC
Most common cause of high bacteria counts in milk is:
Sick cows
Nutrition
Dirty equipment
Bad ventilation
Mastitis costs roughly how much per cow annually?
$50
$100
$200
$500
The most common type of mastitis is:
Acute
Chronic
Clinical
Subclinical
Forestripping is done to:
Stimulate letdown
Check for mastitis
Flush teat canal
All of the above
The milk line should be washed at what temperature?
100°F
120°F
140°F
160°F
Which is a contagious mastitis pathogen?
Klebsiella
E. coli
Staph aureus
Trueperella
What is the food safety agency responsible for milk inspection?
FDA
USDA
APHIS
EPA
What structure produces keratin?
Rumen papillae
Teat canal lining
Udder alveoli
Omasal folds
A cow's milk letdown is triggered by:
Massaging her tailhead
Exposure to sunlight
Suckling stimulation
Starting the pump
Which parlor has cows standing parallel to each other?
Herringbone
Rotary
Parallel
Side opening
The most common rotary platform speed is:
2 sec/stall
5 sec/stall
Milk stone is caused by buildup of:
Protein
Minerals
Bacteria
Fat
The unit should be attached within how long after stimulation?
30 seconds
10 seconds
1 minute
2 minutes
Rough, chapped teat ends increase risk of:
Lameness
Mastitis
Ketosis
Milk fever
A forage sample should be taken from how many square bales?
5
10
20
40
Which is a by-product feed?
Alfalfa
Corn silage
Soybean meal
Distillers grains
Relative feed value (RFV) combines:
Protein & fiber
Digestibility & intake
Minerals & vitamins
Fiber & energy
Which feed has the highest energy density?
Minerals
Carbohydrates
Fat
Protein
Peak milk production occurs:
At walking
6-8 weeks after peak intake
Before peak intake
After peak intake
Heifers should be bred at what % of mature weight?
30%
40%
55%
75%
Transition milk comes from which milkings?
1st
2nd-4th
5th-7th
After 10th
Cold housing for calves means:
Heated barn
Temperature varies with outdoors
Fans for ventilation
Raised heat flooring
A calf begins chewing cud at about:
1 week
2-3 weeks
6 weeks
3 months
Extra teats are also known as:
Warts
Nodules
Supernumerary teats
Blind teats
Which is a macromineral?
Copper
Cobalt
Selenium
Calcium
Which vitamin affects blood clotting?
A. A
B. D
C. E
D. K
Water makes up what % of a cow's body weight?
30%
45%
56%
70%
Most water consumption occurs:
While lying
After milking
At midnight
Before calving
A cow losing water fastest will lose performance due to lack of:
Protein
Vitamins
Energy
Water
The rumen's ideal pH is:
5.0-5.5
5.9-6.2
Which part of the stomach is called the honeycomb?
Rumen
Omasum
Reticulum
Abomasum
Hardware disease occurs in the:
Rumen
Omasum
Reticulum
Abomasum
Which organism digests fiber in the rumen?
Viruses
Bacteria
Worms
Yeast only
The omasum's primary function is:
Acid production
Fermentation
Water absorption
Filtration of nutrients
Which feed analysis method uses infrared light?
Wet chemistry
NIR
Chromatography
Electrophoresis
DM stands for:
Direct Milk
Dry Matter
Dairy Management
Digestibility Measure
Which fatty acid source is common in rations?
Corn oil
Fish oil
Coconut oil
Olive oil
A total mixed ration (TMR) advantage is:
More sorting
Less efficiency
Consistent ration
Higher labor
The transition period spans:
Calving day only
3 weeks before to 3 weeks after calving
1 month after calving
8 weeks before calving
The main purpose of DCAD diets is to prevent:
Mastitis
Milk fever
Ketosis
Bloat
Which feedstuff increases dietary cations?
Calcium chloride
Calcium sulfate
Sodium bicarbonate
Ammonium sulfate
Sodium bentonite is used as a:
By-product
Buffer
Protein source
Vitamin supplement
The leading expense on dairy farms is:
Labor
Feed
Vet bills
Bedding
Which mineral is required in the greatest quantity?
Phosphorus
Sodium
Copper
Potassium
Foremilk is:
Last milk out
First streams removed
Only from rear quarters
Only for beef calves
Chronic mastitis is characterized by:
Sudden swelling
Long duration
Fever and shock
Black quarter
Residual milk is:
Milk after pasteurization
Milk remaining after milking
Milk left in bulk tank
Milk with high SCC
The teat sphincter is a:
Nerve
Muscle
Vein
Lymph node
The alveoli are responsible for:
Milk storage
Milk synthesis
Filtration
The recommended contact time for pre-dip is:
10 sec
30 sec
45-90 sec
65 sec
The recommended contact time for pre-dip is:
10 sec
30 sec
45-90 sec
65 sec
A strip cup is used to detect:
Milk fever
SCC's
Mastitis
Reproductive heat
BTSCC stands for:
Bulk Tank Somatic Cell Count
Bacterial Total SCC
Bovine Tank SCC
Bulk Tank Safety & Cleanliness Code
A cow calving in which months produces the most milk?
May-July
August-September
November-January
February-March
