Dairy Midterm

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Anonymous
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2136
Filename:
Dairy Midterm
Updated:
2009-12-02 19:42:56
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Dairy 1048
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Description:
Dairy 1048 Independent Study
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  1. Dairying is the _________&__________ of _________, _________, and__________ milk and milk products.
    science & business of prodcution, processing, and marketing
  2. What is the primary milk producing mammal in the world?
    Cattle
  3. WHat is the term for the normal secretion of the udder?
    milk
  4. What are 2 reasons why milk is subjected to rigorous checks for quality?
    • 1. perishable
    • 2.it is harvested twice daily
  5. What are 3 criteria used to descirbe the quality of milk and milk products?
    • 1. cleanlines and santation
    • 2. desirable flavor & aroma
    • 3. free from any formo of chemical contamination
  6. What is the primary source of income for dairymen?
    production of raw milk
  7. What is the general recommendation as to where to keep milk in te refrigeratior?
    bottom shelf
  8. Assured and enhanced safety of milk & milk products:
    pasteurization
  9. Paralleled the devlopment of veterinary medicine:
    Tuberculin
  10. Resulted in uniform suspension of fat globules in milk:
    homogenization
  11. Faster turn around time in determination of milk fat:
    electronic milk fat test
  12. Symbolizes that milk is truly a natural product:
    real symbol
  13. When one examines a food label, what 2 major and important items of nutritional information are on the label?
    • 1. percent daily value
    • 2. serving size
  14. What 3 major nutrients in ilk make up most of the total solids?
    carbohydrates, proteins, fats
  15. Name 5 quality acceptance tests done on the milk sample taken by the milk hauler and the reciever of milk at the processing plant.
    • 1. odor & appearance test
    • 2. temperature test
    • 3. acidity test
    • 4. microscopic reading
    • 5. milk fat
  16. What is the relationship between temperature of pasteurization and the exposure time of the milk to that temperature?
    high temperature - short time
  17. The nutrient composition of milk from dairy cattle varies in response to what environmental factor?
    nutrition or feed
  18. Name the most important risk factor that no one can control that is related to incidence of coronary disease. What is the most important risk factor that can be controlled?
    hereditary cannot be controlled, diet can be controlled
  19. What is meant by essential amino acids?
    essential for humans and cannot be synthesized by humans
  20. What is the main reason why some individuals have a problem drinking milk?
    deficiency of the enzyme lactase
  21. Milk is an excellent source of what mineral and what 2 B-complex vitamins?
    Calcium & Riboflavin
  22. What is the major difference betweens weet acidophilus milk and cultured buttermilk?
    the milk is kept cold after the addition of the lactic acid culture until it is consumed
  23. What is responsible for most spoilage in milk and milk products?
    bacterial contamation
  24. What is a major contributor of overrun in ice cream?
    air bubbles
  25. What is the reason for homogenization of the ice cream mix when making ice cream? What is the reason for the blades or dashers inside the ice cream freezer?
    to break the milkfat into smaller particles. The dashers keep the ice cream moving to prevent a fozen solid mass
  26. Cheese Making:
    coagulation of casein
  27. Freeze Branding:
    use of extreme cold to destroy melanocyte
  28. Dehorning at an early age:
    safety & ease
  29. Persistency of Lactation:
    Ayrshire
  30. Carotene-Rich milk
    Guernsey
  31. Highest milk production:
    Holstein
  32. Youngest dairy breed introduced in the US:
    milking shorthorn
  33. highest percentage of milk fat:
    jersey
  34. Uniformity of conformation:
    Jersey
  35. Give 3 examples of workability traits:
    • 1. proper teat size
    • 2. upstanding stature
    • 3. fast milker
  36. WHat is a single deficiency of management that causes loss of income for the dairymen?
    poor record keeping
  37. What are 3 major expamples of records that help dairyment improve the breeding, feeding, & management of the herd?
    • 1. milk & fat production
    • 2. reproduction
    • 3. herd health
  38. What 3 factors affect exposure time when freeze branding?
    • 1. age of heifers
    • 2. refrigerant
    • 3. clipping procedure
  39. Desirable levels of blood cholesterol:
    below 200 mg/dl
  40. Systolic/Diastolc blood pressure:
    <140mm Hg/ <85 mm Hg
  41. Zein:
    Corn protein
  42. Calcium, phosphorus, & magnesium:
    bone-forming minerals
  43. Carotene:
    precursor of vitamin A
  44. 6.5-6.7:
    pH of normal milk
  45. 0.85%:
    all milk protein
  46. 20,000 counts per ml:
    maximum legal standard for bacteria in pasteurized milk
  47. arteriosclerosis:
    hardening of the arteries
  48. Lactose:
    glucose & galactose
  49. Homogenization:
    stabilizes emulsion of fat in milk
  50. 3.25%:
    legal standard for fat in homogenized, Vitamin D added milk
  51. Dr. Louis Pasteur:
    titratable acidity of fermented products
  52. 80%:
    legal fat content of butter
  53. Dairy Conformation:
    angular
  54. Calf replacer:
    useful & harmful bacteria and their control
  55. Fat-free milk contains all of the vitamins originally present in milk.
    False
  56. As the temperature of pasteurization increases, the shorter the exposure time of the milk to that temperature.
    True
  57. The percentage of fat in milk from dairy cows is highest at the peak of the lactation period.
    False
  58. There are not differences in the length of time it takes for newborn mammals to double their birth weights.
    False
  59. As the amount of milk produced by a cow increases, the precentages of fat, lactose, and protein decrease.
    False
  60. It is an excess of cholestrol in the blood and not cholesterol as such that poses danger of coronary heart disease.
    True
  61. The requirement of ruminants for the essential amino acids is met by providindg the animal with high quaility protein in their diet.
    False
  62. All cows of dairy breeds have the same cabability to convert carotene to Vitamin A.
    False
  63. The higher the quality of ice cream, the higher the value for overrun.
    False
  64. Dairy character and not the udder has the higest relationship to milk production.
    True
  65. Cows enrolled in DHI program produce more milk than non-DHI cows.
    True
  66. When screening for somatic cell counts in cow's milk or milk in the bulk tank, the thicker the gel formation, the higher the number of these cells in milk.
    True
  67. Overrun in butter is 1.25 time more than the original amount of fat.
    True
  68. Milk with a freezing point above the legal limit is considered milk with added water.
    True
  69. Why do ruminants not have to be fed high quality protein?
    Because the rumen, the largest compartment of the cows stomach contains symbiotic microorganisms that utilize ammonia from non-protein nitrogen, such as urea or from degradation of natural protein to produce their own micorbial body protein that is of high quality.
  70. Why must milk from cows treated with antibiotics be discarded or withheld from the market milk supply?
    • 1. It cause cause allergic reactions in susceptible cosnsumers
    • 2. inhibiti growth of bacteria necessary in the production of cultured dairy prodcuts.
  71. Why must milk production from cows belonging to different dairy breeds be corrected to fat-corrected milk (FCM) basis?
    It equates the milk producted by each breed into a common 4% milk fat basis so valid comparisions can be made.
  72. What doe sthe Dairy Cattle Unified Score Card describe and represent?
    frame, dairy character, body capacity, feet & legs, udder. It is an attempt to produced a more perfect & beautiful cow.
  73. Milk production of cows in registered DHI records Programs are standardized based on what 3 factors?
    • 1. 2 x (frequency of milking/day)
    • 2. 305d (average length of lactation)
    • 3. ME (mature equivalent age)

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