Milk sampling in primary milk production

Question 1

Individual milk samples:

Answer 1

Visual testing for quality of first milk
Mastitis California test
Conductivity of milk
Antibiotic residues (after withdrawal period)

Question 2

Bulk milk samples:

Answer 2

Before milk collection and transport
Residues for milk inhibitors (antibiotics)

Question 3

Bulk milk samples that should be done twice a month:

Answer 3

Residues of milk inhibitors
Total bacteria count
Basic milk constituents

Question 4

Bult milk samples that should be done once a month:

Answer 4

Somatic cell count
Freezing point

Question 5

Types of control at the processing establishment:

Answer 5

Input control of raw milk: temperature and ATB residues
Intermediate control: fat, heat treatment efficacy, DM, acidity
Output control: sensory, physico-chemical, microbiology

Question 6

What does agitation ensure?

Answer 6

That the bulk milk sample will represent all the milk in the tank.
Temp lower than 5*C
Record date, time, milk temperature and farm name

Question 7

Explain shipping bulk tank milk samples:

Answer 7

Primary container = sample, leak-proof
Secondary container = absorbant material (zip-lock bag)
Tertiary container = styrofoam container
Zip-lock bag and outer container (cardboard)

Question 8

Tests based on flow cytometry to detect bacteria/cell:

Answer 8

Bactoscan TM FC+ for total bacteria in raw milk
Fossomatic TM FC - somatic cell count in raw milk
Residue testing (Copan, Delvo)
Cryoscope - freezing point determination

Question 9

Plate count should be:

Answer 9

less than 100 000 per ml