Milk: quality of milk and dairy products - Residues of medicine and somatic cell count
3 important questions on Milk: quality of milk and dairy products - Residues of medicine and somatic cell count
What happens with subclinical mastitis in cows?
Subclinical mastitis is an inflammation of the mammary gland, but no visual symptoms
- somatic and bacterial cell count are higher
- high plasmin activity
- degredation of milk components -> cause acid formation in the milk
What happens with milk and the cow with mastitis?
- Threshold is 10^3 CFU/ml (colony forming unit)
- when threshold is exceeded ->
- antibiotics are used
- cow separated from herd
- milk must be collected separately
- cow back to herd (social needs) but cannot be milked with other cows yet
- when milk with antibiotics accidentally ends up in the tank ->
- trouble in dairy factories
- antibiotics kill bacteria used for yoghurt and cheese production
What happens if the cow is not treated and SCC is too high?
- Casein micelles can be degraded
- other components and proteins degraded
- quality decreases
- bacteria form acids in the milk
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