cowvet":3jxaw3z1 said:
milkmaid":3jxaw3z1 said:
Ditto to what cowvet said.... except that there are occasions where pennicillin IS my drug of choice for mastitis. It's once in a blue moon, yes, but there are times when I'd rather use that than anything else.
I've had almost no luck with LA200 combating mastitis.
When you run across a drug that will cause total cessation of a lactating quarter without causing a reaction, let me know. I haven't found one yet.
Intramammary drugs only need to be given in the affected quarter, not the clean quarters.
And....... do us a favor, TNcowman, and use terms we're familiar with; udder (singular), teats (4 - normally), quarters (4 - each teat on each quarter), and mastitis (infection within a quarter). 'K? ;-)
The standard injectible penicillin we use crosses from the blood into the udder poorly. It is great on specific bugs when given as an intramammary preparation. There are some "special" penicillins (not sure what brand names they are called on the US market) that have been specifically formulated to be used for mastitis and as an injectible do cross into the udder well. These are mostly used in cattle with multiple quarter involvement or for those that are difficult to treat with an intramammary!!!
There are many different families of antibiotics - some work better than others on udder infections (mastitis). Also, some work better on different bugs compared to others. In an ideal world it would be great if each case of mastitis could be cultured to identify the bacteria involved so that the best antibiotic for that bacteria could be used and therefore increase the chances of a successful outcome.
It is common knowledge that if you don't cure on your first attempt at treatment is gets progressively harder with each attempt after that - hence the importance of using the correct antibiotic in the first place!!!
I did quite a few cultures on cows back when I was on the dairy... it sure taught me a lot about drugs and different pathogens, that's for sure! I certainly agree with what you've said about treatments and such.
I will note that the only time I ever saw a staph aureus infection eliminated in a cow (not just clinically, but by multiple cultures) was after using 60cc's of Twin Penn (long lasting pennicillin; procaine and benzathine) daily plus intramammary infusions of Amoxicillin. I did see a few s. aureus cases clear up in fresh heifers after using 7 days of Pirsue, but that wasn't completely reliable either. Strep and ecoli cases weren't that hard to get rid of - it was the staph cows that were tough for me.
I know penicillin isn't the drug of choice for mastitis most of the time (esp since so many of the staph pathogens are resistant to it), but it has worked for me from time to time.
While I'm thinking of it, what drugs do you use over there for mastitis? have any favorites for certain pathogens?