Thank for the reply, Rob. Yes, I do worm regularly and do switch wormers also. I have a coccidia problem on our property so I worm with corrid twice a year then in the spring use Wazine. I ran Safeguard through them in Feb due to a suspected capillary worm infestation and I'm getting ready to use Ivermectin on them this month for mites and lice and whatever internal parasites that the Safeguard didn't get. Sort of a mop up treatment.Do you worm your birds regularly and do you change your wormers periodically? The reason that I ask is that I had penned up birds that started to die and it was suggested that it was Marek's. Well...if it really is Marek's then basically 98% of your birds die very quickly and your property is contaminated for years to come. The only birds that will survive will be carriers and only vaccinated birds can be kept (even Fayoumis) and all those birds will become carriers as vaccinated birds still get the disease, they just don't become symptomatic (and you'd never want to sell birds, eggs or really even go to the feed store). BUT...most things that affect chickens (disease or parasites) affect the legs and a sick bird can appear very much like a bird with Marek's. A necropsy showed that my birds had capillary worms. This was a surprise because I wormed regularly with Ivermectin but as it turns out Ivermectin doesn't do a very good job against capillary worms. I switched to Safeguard and suddenly I had no more sick birds. More recently my egg numbers started to drop so I changed wormers and the egg numbers jumped right back up. It's pretty cheap to worm your birds and easy if you use Wazine or something like that. If you don't worm your birds ever I'd suggest at least trying it and see if they don't all get instantly better.
I lost my last bird this past Sunday when I had to put my darling and very beautiful Welsummer rooster down due to sudden onset respiratory distress and cyanosis. He was near death and I couldn't bear to watch him suffer any longer. He was only two years old and the last rooster I had from my original flock. Three weeks earlier I had a 13 month old rooster who had been suffering from neurological problems and seizures for the past 4 months suddenly develop cyanosis and die in my arms. None of my birds have developed the one leg forward one back splits of Marek's and only one has developed what can only be described as a loss of balance and co-ordination.
I lost the first rooster last spring in June to an anemia that persisted even after worming and from there I lost another cockerel to sudden cardiac death, his daughter who was at POL to the same end and a 7 month old darling of a BO cockerel to seizures and paralysis. All of my deaths so far have been to my roosters, (breeding stress) and the only pullet was at POL. I've talked already to a doctor at Mizzou's Veterinary Medicine lab about my losses and he didn't deny that it sounds like Marek's especially since I have two hens with pin point pupils that are unequal and one with unmistakenable gray eye. I plan to send my next death to them for necropsy but till then, I'm going with the reality of having Marek's on my property. As the old saying goes, if it quacks like a duck, swims like a duck and walks like a duck, it probably is a duck.
So I know I will probably loose more birds. So far my bantams haven't developed any symptoms but that is subject to change. I have possibly 5 more birds that are under the microscope right now as far as showing symptoms. But I won't give up, which is why I am looking for a breed of chicken that will stand a chance of surviving whatever strain of Marek's that we have on our property. My flock was supposedly bred for natural resistance but like the doctor I talked to told me, by the time your chickens are old enough to tell you that they have natural immunity, they are usually too old to reproduce.
Thank you for answering one question that I forgot to ask and that was if I needed to bring Fayoumi chicks in vaccinated. I have no idea where this infection came from. BUT there are Amish farms all around us and they all have chickens. If a chicken dies they don't try to figure out what killed it. They just throw it in a ravine and get more chickens. Plus there are birds everywhere and wild turkeys. I don't handle anyone else's birds and no body else's birds come on our property, and yes, my flock is officially closed.