[Bramley belle]

Any advice welcome on treating pink eye am desperate have tried cream, antiobiotic injection and conjunctival injection (into eyelid), both myself and vet are stumped.

[Tim W]

We use 1 does of intra mammary mastitis tubes onto the eye and conjunctival injection as you have done---sometimes this takes a month to show any results
The wet weather splashing up dirty water into the eyes can irritate and extend the problem ----otherwise I don't know???

[Hillview Farm]

We have had problems with new forest eye with our cows this year, We were using mastitis tubes with little affect so started using dry cow tubes as they are long acting every other day along with the conjunctival injection and they cleared up with no problems

[esbaird]

Systemic tetracycline (alamycin LA or similar) should work - but you would have to treat the whole group and isolate any that recurred.  Some animals can/will develop a carrier state that will persistently re-infect the rest.  Also - as it is spread through direct contact if you are able you could increase the trough space for feeding so that there is less direct transmission. 

[fifixx]

I stopped feeding in a trough while the young goats had it.  All metal/wood got disinfected too after I moved them.

[farmvet]

I agree with esbaird.  Long acting oxytetracycline injection in the muscle is usually the treatment of choice.  In sheep most cases are caused by a chylamidia which can "hide" in carrier animals.  Spread seems worse when the eyes are irritated by wind or flies and then contact with other sheep or nasal discharges at hay feeders or troughs.  Once its in a flock you can expect periodic flare ups.  Peniciilin based eye or intramammary tubes wont work. New forest eye in cattle is a different bacteria with a different sensitivity pattern