Dairy Cattle Nutrition: Milk Fat Drop

Question 1

What kind of problem is it if milk fat is constantly below the average for the breed (0.3% below)?

Answer 1

Likely a nutritional problem

Question 2

TMR in each layer

• Upper sieve
• Middle sieve
• Lower sieve
• Bottom pan

Answer 2

• Upper sieve -> 2 to 8
• Middle sieve -> 30 to 50
• Lower sieve -> 10 to 20
• Bottom pan -> 30 to 40

Question 3

6 non-nutritional factors for milk fat drop

Answer 3

1) Season of the year
2) Stage of lactation
3) Genetics, breed, and selection
4) High somatic cell counts
5) Milking equipment problems
6) Improper handling of samples

Question 4

How does one evaulate particle size distribution for TMR?

Answer 4

Use of Penn state shaker box

Question 5

8 nutritional/management factors to milk fat drop

Answer 5

1) Low fiber intake
2) Low forage intake
3) High non-fiber carb intake
4) Ration particle too fine
5) Ration particle too coarse
6) Protein deficiency
7) Mineral deficiency
8) Energy deficiency