Dairy Flashcards
Holstein cows weight and origin
1500lbs, from the Netherlands
Most common dairy breed
Holstein
Highest Milk Production
Holstein
Jersey cows weight and origin
800-1,200lbs, from the aisle of Jersey in the English Channel
Oldest of the dairy breeds
Brown Swiss
Brown swiss cows weight and origin
1300lbs, from Switzerland
Ayrshire cows weight and origin
1200lbs, from Switzerland
What 2 cow breeds are from Switzerland
Brown Swiss Cows & Ayrshire Cows
Guernsey cows weight and origin
1200lbs, Island of Guernsey
Dairy Lactation Cycle (5 steps)
1.Partuiton
2.Rebreeding
3.Gestation
4.Dry
5.Partuiton
Dairy Cattle Reproductive Cycle
Calving, 82 days
Pregnant, 283 days
Dairy Cattle Lactation Cycle
Lactation, 305 days
Calving, 60 days
Internal Udder Structure includes…
Alveoli, Lobuoles, Duct System, Gland Cisterm, Teats
List the 2 parts of the teats
Cistern and Streak canne
___ is the internal udder structure
Alveoli
List the 4 components of the internal udder structure
Epithelial Cells, Lumen, Myoepithelial Cells, Capillary System
Epithelia Cells function
Milk synthesis and secreation
Lumen Function
Collects milk components and water
Myoepithelial cells
Milk ejection
Capillary system
Supply milk components
What hormone lets milk down?
Oxytocin
The 2 Milk Production grades include
Somatic Cell Count and Bacterial Count
What are the 2 grades
A grade and B grade
A grade is also known as
Fluid or “Manufacturing”
B grade is also known as
“Manufacturing Only”
Grade A is likely
not an infection
Grade B is likely
An infection
Grade A has _____ Bacteria/Ml
More than 1000
Grade B has _____ Bacteria/ML
Less than 1000
Grade A classes include
Butter, Cheese, Fluid Milk, and Soft Products
Soft Products would include
yogurts, icecream, sour cream
Processing milk is the ___ and ___
Pasteurization and homogenization
List the 5 parts of the average milk composition
Water, 87.7
Fat, 3.6
Protein, 3.2
Lactose, 4.8
Ash/Minerals, 0.7
What are some ways to diagnose mastitis
Visual, pH, Electrical conductivity, Bulk tank SCC, Culture testing, Electronic SC counters, CMT
What is the California Mastitis Test highly sensitive to
Somatic cells in milk
