Lab exam of milk from mastitis cows

Question 1

Milk from cow suffering from mastitis can show:

Answer 1

High count of somatic cells, decrease in milk fat
Decrease in lactose
Increase of chloride
Decreased casein
Increased whey protein
Decrease in vit C and A
Increase in vit B
Increased catalase and phosphatase

Question 2

Number of somatic cells at 30*C in 1 cm^3 is at most:

Answer 2

400 000

Question 3

Changes of physical properties in milk can be:

Answer 3

Lowering titratable acidity
Increasing pH and electrical conductivity
Lowering refraction of milks whey

Question 4

Tests we can use:

Answer 4

Bacteriological test
Cytological test
Somatic cell count (NK mastitis test, californian mastitis test, Fosomatic, Lactoscan)
Detection of chloride ions
ELectrical conductivity
pH (bromthymol test)