NORTHDAKOTATSTATE FFA CDE
DAIRY MANAGEMENT WRITTEN EXERCISE
2009
Work individually to answer the following multiple choice questions. Mark your answers on your grademaster answer card #25420. Make dark marks with a number 2 lead pencil, erase completely to change.
DHI HERD SUMMARY QUESTIONS
1.How many dollars were lost to this dairy farmer during this test period due to a high somatic cell count?
A. $520B. $1,105C. $210D. $1,000
2.Which group of cows had the highest percentage of high somatic cell counts?
A. 1st lactationB. 2nd lactationC. 3rd lactationD. none of the above
3.In which month was the percentage fat the highest?
A. MarchB. AugustC. FebruaryD. September
4.The projected milk production for cows in their second lactation is?
A. 25232B. 22369C. 24032D. 29329
5.Did this farmer increase or decrease the number of cows in his herd?
A. increaseB. decrease
6.The average number of days dry for all cows this test period was?
A. 84 daysB. 66 daysC. 79 daysD. 73 days
7.What percentage of the cow herd was diagnosed as open for over 100 days?
A. 11 %B. 5 %C. 0 %D. 22%
8.In which month will the largest number of cows be dry?
A. JanuaryB. FebruaryC. AugustD. April
9.This herd produced the most milk during which stage of lactation (days)?
A. 41-100B. 101-199C. 200-305D. 306+
10.In which month did 10% of the herd have somatic cell counts over 1,130,000.
A. FebruaryB. MayC. JulyD. September
GENERAL QUESTIONS
11. The form of mastitis that is hidden from sight is known as ______
A. InfectiousB. Clinical C. Acute D. Sub-clinical
12. The pasteurized Milk Ordinance regulates what?
A. Grade A milkB. Manufacturing grade milkC. Grade B milkD. Grade C milk
13. Chemical sanitizers containing ______are most widely used for sanitizing milking equipment.
A. BromineB. SalineC. ChlorineD. Iodine
14.Which of the following is a program designed exclusively by America’s dairy farmers for the benefit of dairy farmers, who are doing their seventh dairy buy this year?
A. CWTB. PPDC. FSAD. MILC
15.What percent of milk produced is used for Frozen products?
A. 20B. 15C. 8.5D. 12
16.In the linear classification system, the classifier evaluates depth of body by looking primarily at the:
A. bone structureB. rib cageC. pelvic areaD. all of the above
17.Feeding a ration that does not have the correct calcium – phosphorus ratio can cause:
A. KetosisB. LeptospirosisC. BloatingD. Milk Fever
18.Cows with chronic mastitis infection that do not respond to treatment should be?
A. treated againB. culled from the herd C. fed moreD. none of the above
19.When do lactating dairy cows most often acquire mastitis?
A. dry periodB. early lactationC. mid lactationD. late lactation
20.Forty percent of all dairy cattle have an extra nonfunctional teat that is called:
A. intermamary teatB. olfactory teatC. super numerary teat D. intramenial teat
21.To produce one pound of whole milk cheese takes about _____ pounds of whole milk of average milkfat test.
A. 5B. 10C. 20D. 30
22.Which dairy breed on the average produces the highest butterfat?
A. AyrshireB. Brown SwissC. HolsteinD. Jersey
23.The most desired and economical breeding age of heifers is:
A. 2 yearsB. 7-10 monthsC. 20-23 monthsD. 13-15 months
24.The hormones produced by the posterior pituitary which stimulates “milk letdown is called?
A. oxytocinB. petrissinC. adrenalinD. thyroxine
25.The heritability of milk production is:
A. 15%B. 25%C. 55%D. 70%
NORTHDAKOTATSTATE FFA CDE
DAIRY MANAGEMENT WRITTEN EXERCISE
2009 KEY
1.B
2.A
3.A
4.C
5.A
6.D
7.C
8.C
9.A
10.D
11.D
12.A
13.C
14.A
15.C
16.B
17.D
18.B
19.B
20.C
21.B
22.D
23.D
24.A
25.B