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Ansc 3010 dairy nutrition
lactating cows and dry cows
Exam with Answers Graded A+
Feed cost is an important consideration, as feed usually accounts for
___________ of the cost of operating the dairy farm enterprise Ans: 45-55%
To achieve profitable milk production, it is important to feed dairy cows Ans:
sufficient amounts of nutritionally balanced diets at reasonable costs
Nutrient needs of dairy cows vary tremendously throughout the _______ and
________ cycle Ans: lactation , dry period
At peak production,
a dairy cow may need ____ to ___ times as much protein & energy as
during late gestation Ans: 3 to 10
Grouping Considerations: Ans: -Production level
-Age or lactation number
-Days in milk (DIM or stage of lactation)
-Body condition score
-Reproductive status
Grouping Considerations Production level: Ans: -High versus lower
production
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-Nutrient needs are different based on production
Grouping Considerations Age or lactation number- Ans: 1st calf heifers are
still growing also producing milk
Grouping Considerations Days in milk (DIM or stage of lactation): Ans: -This
parallels production
-Early lactation cows are in peak production versus late lactation cows, lower
production
Grouping Considerations Body condition score- Ans: Low condition, may
need different diet
Grouping Considerations Reproductive status- Ans: may affect nutrient needs
Body Condition Scoring 1 - 5 Ans: •1 Severe under-conditioning
•2 Frame obvious
•3 Frame and covering well balanced
•4 Frame not as visible as covering
•5 Severe over-conditioning
Stage of Lactation Body Condition Score Drying-off- Ans: 3.5 - 4.0
Stage of Lactation Body Condition Score Calving (older cows)- Ans: 3.5 - 4.0
Stage of Lactation Body Condition Score One-month postpartum- Ans: 2.5 -
3.0
Ansc 3010 dairy nutrition
lactating cows and dry cows
Exam with Answers Graded A+
Feed cost is an important consideration, as feed usually accounts for
___________ of the cost of operating the dairy farm enterprise Ans: 45-55%
To achieve profitable milk production, it is important to feed dairy cows Ans:
sufficient amounts of nutritionally balanced diets at reasonable costs
Nutrient needs of dairy cows vary tremendously throughout the _______ and
________ cycle Ans: lactation , dry period
At peak production,
a dairy cow may need ____ to ___ times as much protein & energy as
during late gestation Ans: 3 to 10
Grouping Considerations: Ans: -Production level
-Age or lactation number
-Days in milk (DIM or stage of lactation)
-Body condition score
-Reproductive status
Grouping Considerations Production level: Ans: -High versus lower
production
, 2|Page
-Nutrient needs are different based on production
Grouping Considerations Age or lactation number- Ans: 1st calf heifers are
still growing also producing milk
Grouping Considerations Days in milk (DIM or stage of lactation): Ans: -This
parallels production
-Early lactation cows are in peak production versus late lactation cows, lower
production
Grouping Considerations Body condition score- Ans: Low condition, may
need different diet
Grouping Considerations Reproductive status- Ans: may affect nutrient needs
Body Condition Scoring 1 - 5 Ans: •1 Severe under-conditioning
•2 Frame obvious
•3 Frame and covering well balanced
•4 Frame not as visible as covering
•5 Severe over-conditioning
Stage of Lactation Body Condition Score Drying-off- Ans: 3.5 - 4.0
Stage of Lactation Body Condition Score Calving (older cows)- Ans: 3.5 - 4.0
Stage of Lactation Body Condition Score One-month postpartum- Ans: 2.5 -
3.0
