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				This section includes 75 Mcqs, each offering curated multiple-choice questions to sharpen your Dairy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. | How often do most heifers and cows come into heat? | 
| A. | every 18- 24 days | 
| B. | every 15 days | 
| C. | every 4 days | 
| D. | everyday | 
| Answer» B. every 15 days | |
| 2. | How will a heifer act when she is in standing the heat? | 
| A. | still and permit other animals to mount her | 
| B. | agitated | 
| C. | rolling | 
| D. | lay down | 
| Answer» B. agitated | |
| 3. | What does PDCA stand for? | 
| A. | pure dairy culling association | 
| B. | Pure dairy cattle area | 
| C. | Purebred dairy cattle association | 
| D. | Plant dairy cattle area | 
| Answer» D. Plant dairy cattle area | |
| 4. | What is the average length of standing heat? | 
| A. | 10 hours | 
| B. | 4 hours | 
| C. | 18 hours | 
| D. | 20 hours | 
| Answer» D. 20 hours | |
| 5. | What dairy product is made by heating milk along with a substance called rennet? | 
| A. | milk | 
| B. | curd | 
| C. | cheese | 
| D. | butter | 
| Answer» D. butter | |
| 6. | On the Dairy Cow Unified Score Card, what is not the part of the four divisions? | 
| A. | age | 
| B. | general appearance | 
| C. | dairy character | 
| D. | udder | 
| Answer» B. general appearance | |
| 7. | What are dairy animals that are officially recorded in the breed association herd book called? | 
| A. | unregistered animal | 
| B. | token animal | 
| C. | unlicensed animal | 
| D. | registered animal | 
| Answer» E. | |
| 8. | What are two pieces of information not kept in the Herd Book kept by the breed association? | 
| A. | animals registration name, birth date | 
| B. | registration name and number of its sire and dam | 
| C. | name of the breeder and birth date | 
| D. | no of udders and skin color | 
| Answer» E. | |
| 9. | What type of soap should be avoided when washing a dairy cow? | 
| A. | fragrant soap | 
| B. | soap with antimicrobial activity | 
| C. | soap with herbal treatment | 
| D. | soap with detergent | 
| Answer» E. | |
| 10. | The back of a dairy cow is made up of what two parts? | 
| A. | chine and loin | 
| B. | udder and skin | 
| C. | chine and udder | 
| D. | loin and bone | 
| Answer» B. udder and skin | |
| 11. | Most of what ingredient is removed from skim milk? | 
| A. | protein | 
| B. | carbohydrate | 
| C. | mineral | 
| D. | Fat | 
| Answer» E. | |
| 12. | When the judge is observing the left side of the dairy cow, where should the exhibitor be positioned? | 
| A. | backward | 
| B. | parallel | 
| C. | horizontal | 
| D. | in front of the cow | 
| Answer» E. | |
| 13. | What is one of the two major reasons a cow would be forced culled? | 
| A. | Poor health | 
| B. | Mastitis | 
| C. | Poor health and Mastitis | 
| D. | Healthy cow | 
| Answer» D. Healthy cow | |
| 14. | What are two common baby calf diseases? | 
| A. | fever | 
| B. | typhoid | 
| C. | scour and pneumonia | 
| D. | allergies | 
| Answer» D. allergies | |
| 15. | What is not an example of sources of grain protein supplements? | 
| A. | Soybean | 
| B. | Cottonseed | 
| C. | Linseed oil meal | 
| D. | Coconut oil | 
| Answer» E. | |
| 16. | What two vitamins is milk high in? | 
| A. | A and D | 
| B. | K | 
| C. | E | 
| D. | C | 
| Answer» B. K | |
| 17. | What is the minimum crude protein a good milk replacer should contain? | 
| A. | 10% | 
| B. | 24% | 
| C. | 15% | 
| D. | 35% | 
| Answer» C. 15% | |
| 18. | Name the body parts considered when evaluating dairy character? | 
| A. | legs | 
| B. | calf | 
| C. | udder | 
| D. | neck | 
| Answer» E. | |
| 19. | How many points are given to General Appearance on the Dairy Cow Unified Score Card? | 
| A. | 10 points | 
| B. | 20 points | 
| C. | 35 points | 
| D. | 40 points | 
| Answer» D. 40 points | |
| 20. | What is the average percent protein in cow’s milk? | 
| A. | 2.5% | 
| B. | 3.5% | 
| C. | 5% | 
| D. | 6% | 
| Answer» C. 5% | |
| 21. | What is the name of cheese with holes? | 
| A. | cheddar | 
| B. | cottage | 
| C. | blue | 
| D. | swiss | 
| Answer» E. | |
| 22. | What form of milk is made by the churning of whipping cream? | 
| A. | cream | 
| B. | ghee | 
| C. | curd | 
| D. | butter | 
| Answer» E. | |
| 23. | What is the reproduction cells from the two parents called? | 
| A. | egg and ovule | 
| B. | ovule and sperm | 
| C. | egg and sperm | 
| D. | steroid and egg | 
| Answer» D. steroid and egg | |
| 24. | What is considered nature’s most perfect food? | 
| A. | butter | 
| B. | milk | 
| C. | yogurt | 
| D. | wheat | 
| Answer» C. yogurt | |
| 25. | When should one start recording a heifers heat periods? | 
| A. | 2-3 months before she should be bred | 
| B. | 3-4 months before she should be bred | 
| C. | 4-5 months before she should be bred | 
| D. | 1-2 months before she should be bred | 
| Answer» B. 3-4 months before she should be bred | |
| 26. | Extra amounts of what vitamin are usually added to milk? | 
| A. | vitamin K | 
| B. | vitamin C | 
| C. | vitamin D | 
| D. | vitamin A | 
| Answer» D. vitamin A | |
| 27. | What is an example of a non protein nitrogen (NPN) used as a protein source in dairy feeds? | 
| A. | nitrogen | 
| B. | phosphorus | 
| C. | magnesium | 
| D. | urea | 
| Answer» E. | |
| 28. | What are the two types of dairy foods? | 
| A. | juice and cream | 
| B. | juice and cheese | 
| C. | cheese and yogurt | 
| D. | soda and cola | 
| Answer» D. soda and cola | |
| 29. | What is the expected daily weight gain of a Holstein heifer calf from 200-800 pounds? | 
| A. | 1.5 pounds per day | 
| B. | 1.65 pounds per day | 
| C. | 1 pound per day | 
| D. | 2 pound per day | 
| Answer» C. 1 pound per day | |
| 30. | Which vitamin helps to stop bleeding by clotting the blood? | 
| A. | vitamin A | 
| B. | vitamin K | 
| C. | vitamin C | 
| D. | vitamin D | 
| Answer» C. vitamin C | |
| 31. | Name a piece of equipment used to fit a dairy animal. | 
| A. | clipper | 
| B. | towel | 
| C. | feather | 
| D. | bells | 
| Answer» B. towel | |
| 32. | What is the name of the milk sugar found only in milk? | 
| A. | Sucrose | 
| B. | Galactose | 
| C. | Lactose | 
| D. | Fructose | 
| Answer» D. Fructose | |
| 33. | Which of the following is not a variety of cheese? | 
| A. | blue | 
| B. | cheddar | 
| C. | buttery | 
| D. | cottage | 
| Answer» D. cottage | |
| 34. | What is a measure of the average additional pounds of milk and fat the bull will transmit to his daughters called? | 
| A. | Predicted difference | 
| B. | Age | 
| C. | Efficiency | 
| D. | Milking capacity | 
| Answer» B. Age | |
| 35. | How much does a bushel of shelled corn weigh? | 
| A. | 20 pounds | 
| B. | 30 pounds | 
| C. | 40 pounds | 
| D. | 50 pounds | 
| Answer» E. | |
| 36. | In relation to the grain of the hair, which direction should the tail be clipped? | 
| A. | opposite to grain of the hair | 
| B. | with the grain of the hair | 
| C. | parallel to grain of the hair | 
| D. | no relation | 
| Answer» C. parallel to grain of the hair | |
| 37. | What is the advantage of blending colostrums from different cows? | 
| A. | wider range of antibodies | 
| B. | wider flavor range | 
| C. | enhanced taste | 
| D. | unhealthy | 
| Answer» B. wider flavor range | |
| 38. | What is the sire rating for milk of a sire with a predicted difference of above 2000? | 
| A. | super less | 
| B. | super extra | 
| C. | super | 
| D. | extra | 
| Answer» C. super | |
| 39. | What is a dairy animal called which has parents or ancestors of different breeds? | 
| A. | herm | 
| B. | calf | 
| C. | same bred | 
| D. | cross bred | 
| Answer» E. | |
| 40. | What’s the major reason a cow may be culled by choice? | 
| A. | high production | 
| B. | diseases | 
| C. | low production | 
| D. | healthy | 
| Answer» D. healthy | |
| 41. | Urea should not be fed to a calf until it is how old? | 
| A. | 3-4 months | 
| B. | 2 months | 
| C. | 1 month | 
| D. | 10days | 
| Answer» B. 2 months | |
| 42. | How much should a calf gain the first month? | 
| A. | 1 pound per day | 
| B. | Half pound per day | 
| C. | 3 pounds per day | 
| D. | 5 pounds per day | 
| Answer» B. Half pound per day | |
| 43. | What is the process called when a calf is switched from milk or milk replaced to water and dry feed? | 
| A. | fertilization | 
| B. | culling | 
| C. | breeding | 
| D. | weaning | 
| Answer» E. | |
| 44. | How many points does dairy character receive on the Dairy Cow Unified Score Card? | 
| A. | 10 | 
| B. | 15 | 
| C. | 20 | 
| D. | 30 | 
| Answer» D. 30 | |
| 45. | Before entering the show ring, what is a question that the exhibitor should be prepared to answer about the animals?I. Birth date and sireII. Dam and breeding rateIII. Date use to calveIV. Age | 
| A. | I. and II | 
| B. | II. And III | 
| C. | I, II, III, and IV | 
| D. | IV only | 
| Answer» D. IV only | |
| 46. | What role does fiber have in the calf starter ration? | 
| A. | digestion | 
| B. | metabolism | 
| C. | respiration | 
| D. | heat tolerance | 
| Answer» B. metabolism | |
| 47. | What is the condition in which large amounts of gas are trapped in a calf’s stomach and the stomach gets big? | 
| A. | Float | 
| B. | Tloat | 
| C. | Bloat | 
| D. | Piles | 
| Answer» D. Piles | |
| 48. | What is the organ that produces cow’s milk called? | 
| A. | limb | 
| B. | rumen | 
| C. | calf | 
| D. | udder | 
| Answer» E. | |
| 49. | What is a sign that a heifer is coming into heat? | 
| A. | Attempt to go under leaves | 
| B. | Calm | 
| C. | Itchy | 
| D. | Attempts to mount other animals | 
| Answer» E. | |
| 50. | At what age should a heifer have her first calf? | 
| A. | 12 months | 
| B. | 8 months | 
| C. | 24 months | 
| D. | 9 months | 
| Answer» D. 9 months | |