ND FFA Dairy Cattle CDE
DAIRY MANAGEMENT WRITTEN EXERCISE
2014
Use the Dairy Herd Records found on back
1. Which cow has the lowest mature equivalent for milk?
a.
105
b.
405
c.
667
d.
524
2. Which first lactation cow is having the great impact on the somatic cell count in the bulk tank?
a.
368
b.
524
c.
620
d.
641
3. Which cow is the most underweight?
a.
110
b.
354
c.
401
d.
402
4. Which cow has the highest index value that selects for the improvement of milk, fat and protein
yield, somatic cell score and productive life?
a.
132
b.
404
c.
539
d.
641
5. Which cow has the highest mature equivalent for fat production?
a.
308
b.
403
c.
524
d.
641
6. Which cow will be the next one to calve after the testing date, assuming normal gestation length?
a.
105
b.
324
c.
642
d.
743
7. Which cow should be the next one to be dried off after the testing date, assuming that breeding dates
are accurate?
a.
409
b.
515
c.
700
d.
751
8. This first lactation cow has the lowest expectation among the cows for the value of future lactation
production, relative to the herd average?
a.
132
b.
368
c.
524
d.
658
9. Which cow is having the least impact on somatic cell counts?
a.
640
b.
630
c.
528
d.
405
10. This cow will transmit the lowest expected breeding value to her offspring for milk?
a.
132
b.
589
c.
620
d.
405
GENERAL QUESTIONS
11. A test used to detect high somatic cell counts is called?
a.
The NDSU Mastitis Test
b.
Blood analysis
c.
California Mastitis Test
d.
All of the above
12. If an animal is extremely sick the dairymen should:
a.
Double-dose the recommended antibiotic
b.
Use longer needle to reach more tissue
c.
Immediately call his veterinarian
d.
all of the above
13. Feeding a ration that does not have the correct calcium – phosphorus ratio can cause:
a.
Ketosis
b.
Leptospirosis
c.
Bloating
d.
Milk Fever
14. The average gestation period for dairy cows is:
a.
21 days
b.
15 days
c.
383 days
15. Solid state backflushing units can help prevent the spread of:
a.
Footrot
b.
Mastitis
c.
Arginine
d.
283 days
d.
Milk fever
16. Registered breeds are those animals that are the result of mating a registered bull with a native cow
or one of mixed breeding?
a.
true
b.
false
17. When do lactating dairy cows most often acquire mastitis?
a.
dry period
b.
early lactation
c.
mid lactation
d.
late lactation
18. The hormones produced by the posterior pituitary which stimulates “milk letdown is called?
a.
oxytocin
b.
petrissin
c.
adrenalin
d.
thyroxine
19. American Milking Shorthorn is considered a dual-purpose breed as is the Brown Swiss.:
a.
true
b.
false
20. Government at local, state and national levels influence the dairy industry:
a.
true
b.
false
21. The ruminant digestive system consists of four compartments that make up the stomach and the
large and small intestine. Which of the following is no t a compartment of the ruminant stomach.
a.
Abomasum
b.
Reticulum
c.
Esophagus
d.
Omasum
22. A cow will consume 90 pounds of excellent quality ryegrass per day (with 2-3 hours grazing). If
the ryegrass were 10% dry matter, how many pounds dry matter will a cow consume?
a.
9 pounds
b.
20 pounds
c.
89 pounds
d.
80 pounds
23. The Ayrshire breed of cattle originated in?
a.
Switzerland
b.
c.
Scotland
d.
Holland
England
24. Poisonous compounds produced by molds are referred to as:
a.
Pathogens
b.
Mycotoxins
c.
Allergens
d.
Vaccinations
25. The most desired and economical breeding age of heifers is:
a.
2 years
b.
7-10 months
c.
20-23 months
d.
13-15 months