Milk Quality Flashcards
What is the main way to test for antibiotic residues In milk
Bulk tank testing
Delvotest
What does MRL stand for
Maximum residue limit
Name the 4 main sources of bacteria in milk
Cow environment
Udder infections
Teat preparation routine
Bacteria from the milking machine and bulk tank itself
How to reduce bacteria contamination when cows are at pasture
Minimising poaching of gateways and around water troughs
Rotate access to fields
Make sure gateways and tracks are cleanish
How to reduce bacterial contamination of cows when housed inside
Clean bedding
Lots of space
Having outside yard access reduces bacterial contamination of beds
Air quality good
Clean passageways
How to stop bacterial contamination via water
Only drinking quality water should be used in the milking parlour
UV treated from the source
Proper storage to stop contamination
What does the Total Bacteria Count (TBC) actually measure
TBC measures live bacteria and is a count of colonies growing on a plate
What does a Bactoscan actually measure
Bactoscan is an automated count of viable and non-viable bacteria as well as those that would not grow when using the TBC method
What can bulk tank bacteriology tell us (x3)
Indication of like source of the problem
What bacteria are present
How many bacteria are present
What does a hugely increased psychrotrophic count, and presence of Pseudomonas fluorescens suggest the contamination is coming from
Contaminated water source in the parlour
Is the teat prep isn’t good, what type of bacteria will be present
Coliform
if the environmental management is poor, which type of bacteria will be high
Coliform
If water quality is causing the problem, which types of bacteria will be high
Coliform and psychotropic
If the bacteria is coming from clinical mastitis, which type of Bactria will be high
Streptococci
If the wash-up routine is poor, which bacteria will be high
Thermoduric
