ANSC 1000 Name____________________________________
Exam 1
Fill in the blank with the best word or phrase. All numbers must have units.
DO NOT USE INITIALS.
________________________ 1. The act of parturition by an equine.
________________________ 2. The genus and species of most of the bovines in the U.S.
________________________ 3. The symbol for a castrated male.
________________________ 4. The genus and species of the domestic horse.
________________________ 5. A term that refers to a nonlactating female.
________________________ 6. A castrated, male porcine.
________________________ 7. The adjective for sheep. (i.e., the sheep term
equivalent to "bovine.")
________________________ 8. The term for intact male cattle less than 20 months old.
________________________ 9. A young, female porcine.
________________________ 10. A young, female ovine.
________________________ 11. The best single measure of sow productivity.
________________________ 12. Carcass weight expressed as a proportion of live weight
is commonly called ? .
________________________ 13. What are the units for feed efficiency for dairy cows?
________________________ 14. What do we call the offspring of the mating of a
stallion and a jennet?
________________________ 15. A castrated male sheep.
________________________ 16. The term for the group of young produced by multiparous
females such as swine.
________________________ 17. Genes occur in pairs. Each gene of the pair is called
a (an) ? .
________________________ 18. The location of a gene on the chromosome is called
the ?.
________________________ 19. The term that refers to the genetic make-up of an
individual.
________________________ 20. The general term for a male or female reproductive cell.
________________________ 21. Feed allowed for the young that the dams do not have
access to.
________________________ 22. The process of sperm formation by the testes is called ?.
(Not the type of cell division.)
________________________ 23. Meat from young cattle less than 3 months of age.
________________________ 24. The natural, whole skin covering including the wool,
hair, or fur.
25. List 2 important reasons why we normally do not wean pigs before three weeks of
age. (4 points)
A. _______________________________________________________________
B. _______________________________________________________________
COMPUTER GRADED. Use a No. 2 soft-lead pencil, only one answer per question, erase
mistakes completely.
1. Which of the following is removed from its mother at the youngest age?
A. pig B. beef calf C. colt D. dairy calf E. lamb
2. Pigs weigh approximately ? lb. at birth.
A. 1.5-1.9 B. 2.7-3.3 C. 3.3-3.9 D. 7-9 E. 10-12
3. A pig will gain about ? lb/day from weaning to slaughter.
A. .6-.7 B. 1.5-1.9 C. 2.5-3.0 D. 3.0-3.5 E. 6-8
4. A pig will eat about ? pounds of feed per day.
A. 1.0-1.2 B. 1.5-1.9 C. 3.0-3.5 D. 5.5-6 E. 8-10
5. The feed efficiency of a steer in the feedlot being fed a high-grain diet
is about
A. 1.5-1.9 B. 2.5-3.0 C. 3.0-3.5 D. 6-8 E. 10-12
6. A steer grazing good pasture will gain about ? lb./day over the entire
grazing season.
A. 0.4-0.7 B. 0.9-1.2 C. 1.3-2.0 D. 2.5-3.0 E. 3.0-3.5
7. The normal weaning age for lambs in actual practice is
A. 5-8 weeks B. 3-6 months C. 6-9 months D. 12-14 months
8. The standard age for reporting lamb weaning weights is
A. 8 weeks B. 90 days C. 120 days D. 180 days E. 270 days
9. The standard length of lactation for dairy cows is
A. 120 days B. 205 days C. 305 days D. 365 days
10. A stocker steer that goes to the feedlot following winter grazing will be
how many months old when ready for slaughter?
A. 18-21 B. 24-30 C. 12-15 D. 7-9
11. Which of the following is the most efficient at converting feed to product?
A. pigs B. steers C. lambs D. dairy cows
12. Iowa produces what percentage of all hogs produced in the U.S.?
A. 5 B. 16 C. 25 D. 42 E. 75
13. You have a herd of 200 cows which you have just bred to a bull. If you are
doing a good job managing your herd, how many calves would you expect to have
a year from now?
A. 180-185 B. 140-155 C. 160-165 D. 195-200 E. 200-210
14. A person with a well-managed range flock should expect ? lambs born out of 100
ewes.
A. 80-85 B. 95-100 C. 100-110 D. 120-130 E. 160-180
15. A beef cow will generally produce about ? lb. of milk/day.
A. 8-12 B. 20-30 C. 40-50 D. 60-70 E. 80-90
16. The total per capita edible meat "consumption" in the U.S. is about ? lb.
per year
A. 49 B. 65 C. 100 D. 200 E. 300
17. The per capita "consumption" of pork in the U.S. is about ? lb. per year.
A. 1/4 B. 16 C. 47 D. 64 E. 78
18. For every dollar spent on food, the farmer gets about ? cents.
A. 11 B. 16 C. 24 D. 39 E. 50
19. The term that best describes an animal that needs further feeding prior to
slaughter is
A. weanling B. stocker C. feeder D. steer E. commercial
20. Another term that often is used in other parts of the U.S. for what we call
stocker cattle is
A. weanlings B. grade C. feeders D. yearlings E. shoats
21. The two main types of beef cattle operations in Alabama and the Southeast are
A. cow-calf and feedlot
B. cow-calf and stocker
C. stocker and feedlot
22. As feedlot steers grow from 750 lb. to 1250 lb., daily gains at 1250
will ? compared to the rate of gain at 750 lb.
A. be slower
B. be faster
C. remain about the same
23. Most sheep in the U.S. are found
A. in the Rocky Mountain region.
B. in the Pacific Northwest.
C. in the plains states.
D. in the corn belt.
E. in the eastern and northeastern farming region.
24. The top 3 states (in order) for beef cow numbers are
A. Texas, Missouri, Nebraska
B. Texas, Nebraska, Kansas
C. Texas, California, Missouri
D. Texas, Oklahoma, Missouri
E. Texas, Missouri, Oklahoma
25. Alabama has generally ranked about number ? in total beef cow numbers.
A. 8 B. 14 C. 23 D. 35 E. 49
26. The top 3 dairy states are
A. New York, Wisconsin, California
B. Wisconsin, California, New York
C. Wisconsin, New York, Minnesota
D. Wisconsin, New York, California
E. New York, Wisconsin, Pennsylvania
27. Which of the following has not contributed to the movement of packing plants
away from Chicago?
A. obsolete structures
B. interstate highways
C. mergers of meat packing companies
D. irrigation
E. all of these have contributed
28. The percent lamb crop is lower for a range flock than for a farm
flock primarily because
A. of the breeds of sheep used by range flock operators.
B. overall nutrition and management are not as good for range flocks.
C. range operators generally are not as knowledgeable about sheep.
D. fewer rams per 100 ewes used.
29. Purebred animals have to be full blooded.
A. true B. false
30. The main purpose of the purebred breeders is
A. to support the various breed associations.
B. to support livestock shows to help promote breeds.
C. To develop breeding stock having high genetic potential for production
traits.
D. to make use of full blooded (not crossbred) animals having high genetic
potential so the breed doesn't become extinct.
31. Frame score in cattle is based on
A. hip height and age
B. hip height and weight
C. height at the shoulder and age
D. height at the shoulder and weight
E. age and weight
32. Which type of swine operation is most prominent in the U.S.?
A. feeder pig production
B. feeder pig finishing
C. farrow-to-finish
D. purebred/seedstock
33. Your textbook lists and discusses at length 3 primary factors that affect
profitability of a commercial cow-calf operation. Which of the following
is not one of those three factors?
A. calf weaning weight
B. percent calf crop
C. libido and mating capacity of the bulls
D. annual cow cost
34. If a lactating dairy cow is fed too much grain relative to the amount of
roughage (fiber) in her ration, which of the following is the most likely
problem that can occur?
A. over-production of milk leading to tissue damage in the mammary glands
B. liver damage because of the excess energy being absorbed from the
intestinal tract.
C. The cow will stop eating and get thin.
D. The amount of fat in the milk will decrease, milk production will decrease,
and the cow will get fat.
E. Because of her genetic ability to produce lots of milk, "too much" grain
relative to the amount of roughage is not a problem.
35. Sheep normally will breed during what season of the year?
A. late summer and fall
B. late winter to early spring
C. late spring to early summer
D. Sheep may be bred any time during the year, depending on when the
producer would rather have the lambs born to match desirable weather
and feed availability.
36. In which of the following livestock enterprises would you most likely have
a "parlor?"
A. beef cattle
B. dairy cattle
C. sheep
D. swine
37. Calving interval refers to
A. the time from when a calf is born and when the cow is re-bred.
B. the time between the birth of the calf and when it is weaned.
C. the time between when this year's calf is weaned and next year's calf
is born.
D. the time from the birth of one calf until the birth of the next.
E. the time between the birth of the first calf and the birth of the last
calf for a particular cow.
38. Coat color in shorthorn cattle is an example of
A. complete dominance B. epistasis C. overdominance
D. lack of dominance
39. The polled trait is an example of
A. complete dominance B. lack of dominance
C. overdominance D. epistasis
YOU MUST SHOW HOW YOU WORKED THE FOLLOWING PROBLEMS AND HAVE
UNITS WITH ALL NUMBERS TO GET FULL CREDIT. (15 points....3 points each)
You own 80 crossbred cows that were bred between June 1 and July 25. Your
veterinarian pregnancy checked your cows and found that 75 had conceived.
On October 1 (the following year), 69 calves were weaned and averaged 435
lb. You put the calves on cool-season grazing at weaning for 135 days after
which they weighed an average of 705 lb. After pasture, they were placed in a
feedlot for 140 days and gained 395 lb. each while consuming 20 lb. of feed
each day. The cattle then were slaughtered at a local packing house and the
average carcass weight was 671 lb.
A. What was the pregnancy rate of the cows?
B. What was the percent calf crop?
C. What was the dressing percentage?
D. What was the ADG of the calves on pasture?
E. What was the feed efficiency of the calves in the feedlot?
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