Dairy Production Systems

Question 1

What breed of cow composes 90% of the US dairy herd?

Answer 1

Black & White Holstein

Question 2

What breed was the predecessor of the Holstein breed?

Answer 2

Friesian

Question 3

What breed of cow constitutes only 7% of the US dairy herd?

Answer 3

Jersey

Question 4

What is the value of the US dairy industry?

Answer 4

$39.7 billion

Question 5

What percentage of total sales does milk and dairy comprise in PA agricultural production?

Answer 5

32.5%

Question 6

How does feeding cows coconut oil/lauric acid affect their milk composition?

Answer 6

Doubles the milk fat composition

Question 7

How does high-oil canola and rapeseed meals affect milk’s fatty acid composition?

Answer 7

Canola oil/rapeseed meal decreases saturated fats and increases MUFAs.

Question 8

How do pasture-raised/grazing cows milk fatty acid composition differ?

Answer 8

• Decreased saturated fats
• Increases CLA
• Increases PUFAs

Question 9

Define tie-stall dairies.

Answer 9

Cows are tied down to stalls for most of the day.

Question 10

Define free-stall dairies.

Answer 10

Cows can freely walk around stalls without being tied down.

Question 11

Define open-lot dairies.

Answer 11

Cows just lay outside.