All of the birds are now symptomatic of Marek\'s according to the online descriptions.
Lame, the foot is clawed up, forward and while the bird can close it further as in helping to perch, it cannot open the foot to walk flat upon it. A couple of them appear to have a \'dropped wing\'. This is neurological, inflammation of the sciatic nerve of the spine causing this, from the disease.
One of the symptoms affects the eyes. The skin is all droopy around the eyes and the iris\'s are changing color sort of graying out. This is called grey eye.
The disease presents in 4 different areas. The worse is that they will develop tumors on their major organs.
Going light is another symptom, wasting, but that is iffy in a large pen as my group of 20 or so, the other roos are keeping the lame ones \'down\' and increasing their stress levels.
This is a herpes virus and it affects immunity at the cellular level and changes T-cells. Stress increases the effects of the disease.
The live vaccine is made from turkey herpes virus, so running a \'white turkey\' with the flock of chickens is exposing them to the same thing as vaccinating them does. The turkey may become susceptible to something called \'black head\' but the chickens would be protected against/develop immunity to the chicken strain of herpes virus that is Marek\'s.
Marek\'s is called \'chicken cancer\' because of the tumors. I am currently supplying herbs that will increase their immune systems (goldenseal) aid rebuilding of the t-cells (echinacia) and looking for the lemon balm which is supposed to help against herpes viruses. Additionally KELP is supposed to increase the birds natural vitality and support their immune systems. It is possible for some birds to appear to recover from the disease but they may succumb later to tumors and will always be carriers shedding the disease.
Mareks has no treatment and no cure. The virus is shed in the feather follical/dander. It is highly contagious and windborne. It is also carried by DARKLING BEETLES whose larval form is known as MEALWORMS that live in the chicken coop. I\'ve never fed mine mealworms. Contamination is strictly airborne in this case.
I haven\'t been on others farms around their chickens and my birds got this with the return of fair spring weather and the songbirds.
They also say that a farm down the road could have Marek\'s disease and the wind can carry it to your farm at even a mile away.
The vaccine is effective for 2 years. The newborn chick develops higher immunity which is why dayold vaccine is recommended than older birds. Older birds do develop some immunity to the disease with the vaccine and whole flock vaccination is still recommended. Vaccinating the fetus in the EGG prior to the chick hatching has been shown to yield even better immunity.
It takes 2 weeks from infection to show any symptoms at all, with the first in my case being gradual lameness. It was only yesterday that the 3rd bird was lame and a 4th had obvious wing dropping as he was tripping on it occasionally. At that time I looked and most of the roos now look rheumy eyed with the oddish skin drooping around the eyes and their eye color is fading.
These are Welsummers, a dutch breed that was made using several birds during the early 1900\'s including Barneveldars, another Dutch breed. I always have to look up what they are thought to be made from.
It is a harsh lesson from being uninformed about what the disease is.
My coop is on a dirt floor and is 2 cattle panels (wire) tied together and lashed onto 4 landscape timbers. It has two pieces of 4x8 plywood attached to the South and West sides with a tarp tied across the top. There is lots of fresh air and it is all wired over with chicken wire. They free range in our yard daily and that area is chain link fencing 130x150 feet x5 feet high.
Since it is carried in the birds dander and feathers.....
Can\'t protect them from the wind and songbirds if they free range.
If it was wood or metal with a cement floor, then power washing would make sense, but what about your runs?
New stock vaccinated and quarantined for a few weeks until immunity develops....