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Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question. |
| | 1. | In a commercial egg laying operation, the producer strives to produce a dozen table eggs on how many pounds of feed? | a. | 2 | b. | 3 to 3.5 | c. | 7 or fewer | d. | 1.75 to 2.25 | | | | | | | | | | |
| | 2. | At what point in time is temperature highest for a hatching egg? | a. | at lay | c. | during pre-warming before setting | | b. | in the farm egg room | d. | during incubation | | | | | | |
| | 3. | Improper pre-warming of hatching eggs before setting may: | a. | increase variation in hatch time | | b. | promote condensation, thus encouraging mold growth | | c. | be related to air circulation | | d. | All of these are correct | | | | |
| | 4. | Most setters run at approximately__degrees F and__%relative humidity. | a. | 30 and 60 | b. | 102.5 and 50 | c. | 99.5 and 50 | d. | 101 and 60 | | | | | | | | | | |
| | 5. | During incubation, the egg loses approximately what percent of its weight? | a. | 12 | b. | 16 | c. | 6 | d. | 8 to 10 | | | | | | | | | | |
| | 6. | Age of eggs plays an important role in determining incubation or “setting” time. When hatching eggs have been “stored” more than __days, incubation time should be extended__hour(s) each day of extended storage | a. | 5, 1 | b. | 6, 1 | c. | 4, 0.5 | d. | 8, 1.5 | | | | | | | | | | |
| | 7. | “Clears” are normally: | a. | detected and removed at setting | | b. | detected and removed at transfer | | c. | disposed of in a disinfectant container | | d. | detected and removed at transfer AND disposed of in a disinfectant container | | | | |
| | 8. | Which of the following is an important factor regarding the required transportation temperature for baby chicks from hatchery? | a. | age of the chick | | b. | availability of feed and water | | c. | construction material of the chick boxes | | d. | age of the driver | | | | |
| | 9. | For hatchery operations, what is the recommended sanitation procedure for delivery vehicles unshed to transport chicks to the farm? | a. | apply disinfectant and sanitizer before each return of the farm | | b. | power wash with detergent/disinfectant on each return to the hatchery | | c. | soak in detergent after hatchery | | d. | detergent sanitize weekly | | | | |
| | 10. | According to the Broiler Breeder section of the Poultry Science Manual, female broiler breeders should be targeted to reach sexual maturity at: | a. | 15 weeks age | b. | 20 weeks age | c. | 25 weeks age | d. | 30 weeks age | | | | | | | | | | |
| | 11. | When brooding and rearing male and female broiler breeders, a target body weight would be for the males to be how much heavier than the females at 24 weeks of age? | a. | 40 to 50% | b. | 140% | c. | 130% | d. | 30% | | | | | | | | | | |
| | 12. | Which of the following “reasons for broiler downgrades” accounts for 50% to 60% of those carcasses that are downgraded? | a. | blisters | b. | rejects | c. | poor feathering | d. | bruises | | | | | | | | | | |
| | 13. | Which of the following production practices accounts for over 70% of the British Thermal Unit (BTU) energy used in poultry production? | a. | incubation and hatching | c. | “Range” grow out of turkeys | | b. | breeder operations | d. | brooding | | | | | | |
| | 14. | When diagnosing hatching problems in newly hatched chicks, which of the following conditions may cause unhealed navels? | a. | improper egg storage | c. | high temperature (day 1 to day 19) | | b. | high humidity (day 20 to day 21) | d. | These are all correct | | | | | | |
| | 15. | Regarding market broiler nutrition and “recommended nutrient levels” which of the following statements is accurate? | a. | the recommended percent protein content level is highest for a starter ration. | | b. | the recommended kilocalories of metabolizable energy (kcal M.E.) level is highest for a grower ration. | | c. | the recommended percent calcium (Ca) level is lowest for a starter ration. | | d. | the recommended percent added fat level is lowest for a grower ration. | | | | |
| | 16. | Broiler breeders are normally moved to laying houses at __ weeks of age, and first eggs are normally produced __ days following light stimulation. | a. | approximately 20 to 28 to 29 | c. | approximately 20 and 21 to 28 | | b. | approximately 30 to 20 | d. | approximately 27 to 30 | | | | | | |
| | 17. | A general guide for determining litter moisture is to squeeze a handful and observe if it forms a ball ( too wet), breaks up on release, or does not adhere ( too dry). Too dry would be moisture content below____. | a. | 50% | b. | 20% | c. | 30% | d. | 12% | | | | | | | | | | |
| | 18. | Water consumption monitoring is a very important management practice in poultry production. Depending on the temperature, a chick drinks about how many pounds of water for each pound of feed consumed? | a. | 1 to 2 | b. | 2 to 3 | c. | 4 to 5 | d. | 6 to 7 | | | | | | | | | | |
| | 19. | Feed consumption monitoring is also important. A rule of thumb in calculating the amount of feed (pounds) that 100 broilers will consume each week is to multiply the age of the birds( in weeks) times____ |
| | 20. | A “standard vaccination schedule” for egg-strain pullets includes vaccinating the pullets against various strains of Newcastle disease at: | a. | 1 day, 8 weeks, and 14 weeks of age | | b. | 10 days, 12 weeks, and 14 weeks of age | | c. | 10 days, 5 weeks, and 14 weeks of age | | d. | 5 weeks, 12 weeks, and 14 weeks of age | | | | |
| | 21. | In proper nest management of broiler breeders using conventional nest (not mechanical),which item is not a recommended practice? | a. | floor eggs should be blended through the flats and racks to avoid concentration of bacterial load in one location within the incubator and hatcher | | b. | gather eggs at least 4 times a day | | c. | pack eggs large end up | | d. | since most eggs are laid in the morning, collect all eggs before noon and close upper tier nest during afternoons. Close bottom tier nests overnight to prevent roosting on the nests and perches. | | | | |
| | 22. | From the information provided in the Broiler Breeder Management section of the Poultry Science Manual, what would be the reasonable and correct approach for young flock of female breeders that are overweight and exceed the target standard for their age? | a. | Reduce feed consumption gradually until birds reach recommended target weight for their age | | b. | reduce nutrient concentration in their diet until the birds reach the recommended weight for their age | | c. | reduce both feed consumption and dietary energy concentration until the birds reach the recommended weight for their age | | d. | maintain the weight excess until the pullets reach the onset of lay; however feed to target rate of weight gain | | | | |
| | 23. | In the preparation of a vaccine water mixture, what might be the purpose for adding powdered skim milk (1-1/6 cups to 5 gallons of water) | a. | precipitate fluorine | | b. | neutralize chlorine | | c. | enhance the flavor to insure drinking | | d. | cloud mixture to enhance the appearance of the vaccine | | | | |
| | 24. | A hatchery ventilation system must ensure that the movement of air is: | a. | circular | | b. | coming from all directions simultaneously | | c. | in the same direction as the eggs move ( that is, from setters to hatchers) | | d. | such that the air supply for the setters is 10 cfm/1,000 eggs. | | | | |
| | 25. | Grit is fed primarily to achieve which of the following objectives? | a. | increase body weight to increase grower payment | | b. | replace oyster shell | | c. | assist in grinding feed in the gizzard | | d. | increase fertility | | | | |
| | 26. | During winter-feeding, a broiler flock should receive an additional 2.5 kilocalories of energy per hen per day for each degree of in-house temperature below 68 degrees F. This may be achieve by either increasing feed consumption or by increasing dietary energy concentration. Assume a flock being fed a breeder diet containing an energy level of 3,000 kilocalories per kilogram of feed is consuming 0.33 pound(150 gram) of feed per hen per at an in-house temperature of 72 degrees F, and the average in-house temperature drops to 60 degrees F. To achieve adequate energy consumption to this diet each hen should now consume _________ grams of feed per day. | a. | 144 | b. | 150.6 | c. | 156.7 | d. | 166.6 | | | | | | | | | | |
| | 27. | For the broiler breeder flock described in question number 26, assume the average in-house temperature has now dropped to 58 degrees F. Based on this change in temperature, how many kilocalories per day should a hen receive ( a kilogram equals 1000 grams) | a. | 25 | b. | 475 | c. | 2500 | d. | 450 | | | | | | | | | | |
| | 28. | In broiler grow-out operation the house floor space provided is increased from 0.7 square foot per bird during winter, spring, and fall months to 0.8 square foot per bird during the summer months. So, a broiler house that is 50 feet wide by 550 feet long has the capacity to house ___broilers during the winter, spring, and fall months, and ___ broilers during the summer months. | a. | 19250, 22000 | b. | 16000,14000 | c. | 39286, 34375 | d. | 22000, 19250 | | | | | | | | | | |
| | 29. | Assume that one pound is equal to 463.59 grams. A case of eggs ( 30 dozen eggs) weighing 56 pounds (case weight) is set in an incubator. For these eggs, fertility and hatch of fertile eggs is 95%. At hatch the chicks weigh approximately 67% of the original egg weight at setting. What is a good estimate of the weight of an individual chick that hatched from these eggs? | a. | 2.5 ounces | b. | 70.9 grams | c. | 63.7 grams | d. | 1.67 ounces | | | | | | | | | | |
| | 30. | A 12 ton load of fresh litter is sampled and determined to be 20% moisture( water). We wish to dry the litter to 10% moisture. For the litter to be dried to 10% moisture, how many pounds of moisture must be removed through dehydration? | a. | 2000 lbs. | b. | 2667 lbs. | c. | 1778 lbs. | d. | 1800 lbs. | | | | | | | | | | |