UNDERSTANDING - 1 - COW_Milk Production

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* 1. Enter your First and Last Name

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* 2. _________ is the first feed for neonates after the parturition and provides them with all necessary nutrients for their first days of life.

Casein

Albumin

Globulin

Colostrum

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* 3. Milk is synthesized in secretory cells arranged as spherical structures called alveoli, in the interior of the cow’s udder.

True

False

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* 4. The concentration of antibodies in colostrum averages

12%

24%

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* 5. Approximately _____ liters of blood must pass through the udder to produce 1 liter of milk.

50L

500L

5000L

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* 6. Select all that apply. Milk-producing epithelial cells:

Take ingredients from the blood brought by the blood capillaries

Increase milk production as a result of mastitis

Produce some components that will be part of the milk

Causes a cow to have a positive energy balance early in lactation

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* 7. Casein is the main carbohydrate present in milk.

True

False

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* 8. Ideally, lactation will be interrupted after _____ months, so that the cow’s udder can ‘rest’ and start a new lactation with her next parturition.

4-6

10-12

14-16

6-8

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* 9. To get more milk from each cow, dairy farms usually manage herds so that each cow gives birth about once every two years and restart its production after a ‘break’ called a “stimulation-period”.

True

False

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* 10. Milk production depends on:

Breed

Genetic potential

Health

Age

Stage of lactation

All of the above

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* 11. When a cow has ______, her milk production decreases during the infection and becomes compromised for the rest of the lactation.

Mastitis

Parturition

Guernsey

Myoepithelium

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* 12. In order to dry a cow off, it is necessary to stop milking her and hence stop stimulating her to produce milk.

True

False

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* 13. Right after being ‘dried off’, and right before parturition, cows are very vulnerable to the infection of the mammary gland.

True

False

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* 14. Select all that apply. A cow generally gains weight during:

In early lactation (up to the 10th week after parturition)

In later lactation (after the 10th week after parturition)

During the dry period

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* 15. In order to make good management decisions and improve the efficiency and profitability of dairy systems, it is necessary to understand and manage cows throughout their lactation and dry period.

True

False