This autumn is leaving dairy herds struggling with seasonal mastitis incidences, Mastitis cases occur to varying degrees in different herds as you try to reduce the risk. However, this season, cases of mastitis suddenly increase, or in some low incidence herds they recur, in autumn,
Stocking density,Warm, humid weather, Flies, Environmental pathogens.
Autumn becomes a struggle with high somatic cell counts and mastitis cases. These cows are exposed to the conditions above , dirty gate ways don’t help during this transition period . Strep uberis, coliform also e.coli. environmental pathogens are mainly responsible.
Strep. uberis causes both clinical and subclinical mastitis, that may be easy to cure or very difficult. It can be spread both in the parlour, during milking times and picked up through the dry period. Clinical cases can be very persistent and difficult to cure and subclinical cases can even go unnoticed, but in both cases infection in one cow poses a risk of infection to another cow; once present it can easily spread throughout the herd.
E coli is the most prevalent environmental pathogen causing mastitis in dairy cows.
It is present in large numbers in faeces, meaning that dirty bedding and lying in yards are big risk factors. E coli can cause a range of mastitis presentations, from a simple clinical mastitis that self-cures, through to toxic mastitis.
A “simple” E coli mastitis results after rapid multiplication of the bacteria in the mammary gland. This results in large migration of white bloods cells into the quarter, raising the somatic cell count and promptly eliminating the infection.
Coliform bacteria are normal inhabitants of soil and the intestines of cows. They accumulate
and multiply in manure, polluted water, dirt, and contaminated bedding. Research has shown
that coliform numbers of 1,000,000 or more per gram of bedding increase the likelihood of an
udder infection and clinical mastitis.
optimise cleanliness of the cows as they come in for milking pre dipping prior to unit placement may help .The warm, wet autumn increased wet areas around gateways and flies may be a factor, perfect for the increase and growth of pathogens
If cows are in at night , grazed in day , improve bedding of cubicles use lime to dry beds keep passage ways clean .Faeces tends to be looser, which means the cows’ legs and udders are dirtier, improve feeding .