Understanding udder health
Last month we talked about why dry cow management is critical, though often overlooked. This month I wanted to dive further into the dry period’s importance to udder health.
Mastitis is the result of complex interaction between bacteria, the farmer, the milking machine and the cow.
Once bacteria enter the udder, the cow's immun system fights infection by producing white blood cells, measured as somatic cell count (SCC).
Depending on the degree of inflammation you may see changes in the milk (clinical mastitis), or no changes in the milk (subclinical mastitis).
Clinical mastitis means cows show symptoms, there is change in milk e.g. clots, watery, blood, heat and/or swelling in udder, reduced milk yield and the cow is off-colour.
Acute chronic infection appears suddenly and is usually relatively short-term infection; there are no symptoms in cow, but high somatic cell count (SCC), or reaction to rapid mastitis test (RMT), and often reduced milk yield.
How does mastitis spread? Mud and muck gets onto teats and causes mastitis, often in spring and is generally caused by streptococcus bacteria.
There can also be cow-to-cow spread; bacteria in the milk of an infected cow will contaminate the cups for the next five cows milked with that cluster. This is commonly caused by staphylococcus bacteria.
There are several ways you can treatment:
1. Clean the teat end, before taking a milk sample or treating the cow.
2. Collect initial milk sample, then either submit to lab for culturing bacteria, or freeze for later.
3. Treat with antibiotics as per veterinary authorisation.
4. Anti-inflammatory treatment will provide pain relief, reduce fever and swelling.
5. If the cow is very unwell, seek veterinary advice.
Four Main Bugs
So what are the bugs that cause mastitis in dairy cows? While there are a huge range of bugs that can cause mastitis, there are four main groups of bacteria responsible for the majority of cases:
Dairy farmers are set to benefit from the radical sweeping changes the Government is planning to make to the regulations that form part of the Resource Management Act (RMA).
The reported surge in interest in dairy conversions should be put into the context of falling overall cow numbers and improving environmental performance, says DairyNZ.
New Zealand's top trade official has told dairy farmers that their sector faces the most trade barriers internationally.
Waikato sharemilker Matthew Zonderop had no inkling that one day he would become a matchmaker for cows.
The coveted post of Federated Farmers' national dairy chair will see a two-way contest at the Federated Farmers annual meeting later this month.
Research lending to the production of dairy products that benefit the elderly and improves the overall wellbeing of all people is a key focus of Fonterra's Research and Development centre, based in Palmerston North.
OPINION: The Free Speech Union is taking this one too far.
OPINION: New national data from The Drug Detection Agency (TDDA), a leading workplace drug tester, shows methamphetamine (meth) use is…