Dairy cattle

Question 1

Holstein

Answer 1

-most common breed
-netherlands
-produces more milk than other dairy breeds
-1300-1600 lbs

Question 2

Red and white Holstein

Answer 2

-netherlands
-strong immune system and heat resistance

Question 3

Jersey

Answer 3

-smallest of dairy breeds
-british chanel
-docile
-most heat tolerant
-high butterfat content in milk (6%)

Question 4

Brown swiss

Answer 4

-oldest breed
-switzerland
-large ears
-ideal for making cheese bc of protein-fat ration
-kind and docile

Question 5

Guernsey

Answer 5

-english channel
-golden colored milk

Question 6

Ayrshire

Answer 6

-scotland
-adapt easily
-less feed same amount of milk

Question 7

Milking shorthorn

Answer 7

-great britain
-large in size
-hoof durability
-high protein- fat ratio

Question 8

when should we AI?

Answer 8

12 hours after heat is detected

Question 9

Where do we collect blood from?

Answer 9

Tail vein

Question 10

How to collect blood from tail vein

Answer 10

-lift the cow tail
-perpendicular to the tail
-once blood is seen, push tube to begin collection

Question 11

how many times a day are cows milked?

Answer 11

2 to 3 times a day

Question 12

parlor milking system

Answer 12

cows come to the parlor to be milked
-all cows prepped at the same time
-

Question 13

robotic milking system

Answer 13

-reduces milking staff
-can acess 24 hours

Question 14

Mastitis

Answer 14

-infection and inflammation of the udder
-treat with antibiotics

Question 15

Ketosis

Answer 15

-metabolic disorder with a negative energy balance
-caused by underfeeding, stress and other infections
-treated with IV glucose injections

Question 16

Displaced abomasum

Answer 16

-“twisted stomach”
-often happens after a difficult birth
-caused by feeding too much silage before birthing

Question 17

Milk fever/ hypocalcemia

Answer 17

-caused by an imbalance of calcium
-muscle paralysis (prevents cow from standing)
-more common with multiple calfs

Question 18

Retained placenta

Answer 18

-placenta not expelled at birth
-quickly becomes infected

Question 19

Metritis

Answer 19

-infection caused by retained placenta
-abnormal discharge
-best treatment is antibiotics

Question 20

Rumen

Answer 20

-largest part
-holds up to 50 gallons of partially digested food

Question 21

Reticulum

Answer 21

(honeycomb shaped)
-the first compartment
- no digestion occurs in this compartment

Question 22

Omasum

Answer 22

-some water absorbed
-cud is pressed and moved down

Question 23

Abomasum

Answer 23

-actual stomach
-food is fully digested here

Question 24

Masticate

Answer 24

chewing

Question 25

Lactating

Answer 25

producing milk

Question 26

TMR

Answer 26

total mix ratio (refering to food)

Question 27

How long does lactation last?

Answer 27

10 months

Question 28

Dry cow

Answer 28

not producing milk ("rest period")