Hi Cynthia,
I hated hearing the statistics too for what they say is in our flocks, I don't know if that is based off of the lists of birds that have been tested that there is a record of or not.
I do know there is something regarding the eggs or the lack thereof, go to
www.thepoultrysite.com when the page comes up lay your mouse on technical information in the menu, then follow it accross to poultry diseases and click on that, from the list locate egg drop syndrome and read thru that information, I think it is contagious, it also mentions some of the other diseases in the diagnosis part of the information there, and you will CRD is one of those listed, so it is involved.
You may see no symptoms from your birds and they may appear healthy to look at them visually, the only way to know for sure they don't have diseases is to test them for diseases, and costs for testing are thru the roof which is why alot of people don't test.
I had birds at one point that I had to depopulate because of the mycoplasmas, I had Cochins for a couple of years and had nice healthy birds always laying never sick, no signs of respritory disease whatsoever. I decided I wanted to purchase Marans and found 3 birds I could get from someone about 5 hours away from me, I went and looked at the bird, inspected the guys place, it was well organized and very clean, no over crowding, separate buildings for his Incubator, brooder, and grow out pens, really nice operation and the guy I still talk to and help today, very nice man, I brought the birds home and immediately brought them inside, I put the Rooster in a pet taxi in my living room for the evening and the 2 pullets I put in a large box in my spare bedroom, I told my husband when I got home from work the next day I would take care of them and asked him to feed and water them for me, when I came home from work, as soon as I got in the door, my husband said "Did you know this Rooster is sick" I was shocked, he took him out of the pet taxi, he had sinuses running, rattly breathing, I then went to look at the pullets, one was 3 months old and no symptoms from that one, the other was 4 months old and was sneezing, I immediately called the breeder to let him know and he was shocked that they were sick, they didn't ride to my house from his in the back of a truck the birds were in the backseat of my car all the way home, so being exposed to bad elements wasn't the reason why for what was happening with them, I got antibiotics and put in the water to treat them with, I also called all over the place trying to find out what to do, I had to go get everything to treat them, I had never had a sick bird before, after about 5 to 15 days the rest of my birds outside started coming down with the same symptoms as these Marans, also the 3 month old pullet that appeared quite healthy died without any symptoms the first week, after months of trying to treat them and the rest of my birds getting sick and some dying, I decided I wanted to get the correct medication to get rid of whatever this was, and wanted blood tests done to know what I was dealing with, I called here in Ohio the State Vet, he wanted 75 dollars a bird just to see them, and the testing costs was ontop of that amount, I found thru searching a Lab out of state that is the same as the Ohio Lab credentials, that would test for me if I drew the blood and sent it to them, the vet was great to work with, I had a problem drawing blood, everytime I stuck the bird it flinched and I flinched, after several trys and me feeling bad for poking my poor bird, I contacted a 4H Advisor that was certified to do NPIP testing and asked her to help me, it took less than a half hour for drawing the blood on 4 birds with me holding the birds and her drawing the blood, they get 2 dollars a bird for NPIP, I think I gave her 15 and she said that was fine, I purchased the syringes at
TSC for about 5 to 6 dollars, I got the needles the vet told me to get, I purchased the blood tubes from a Vet in another town for about 1 dollar each, I sent the blood to the Lab thru Fed-Ex, they are the only shipper that will ship blood, found that out by calling all of them, I paid the most for shipping which was about 30 dollars if I remember right, because I wanted it to get to the Lab ASAP, it arrived the next morning before 10am at the Lab and they began testing, I knew within 3 days what my birds had and how bad it was, the vet told me to test both of the Marans and to pick 2 of my other birds that got the symptoms first, that wasn't hard to do I only had about 16 other birds and they all had names and came when I called them, anyone of them I could go outside and pick up out of the yard, after the vet was done and he did more than one test on the samples he did 3 I think on each of the samples, he told me he did that because there can be a false positive reading and to make for sure they actually grew the stuff from the blood I sent them, and the vet told me from the blood titers that the Marans had it first and the others got it from the Marans, and he told me the Marans were the carriers, needless to say I knew nothing of how this worked at this point, that was when I got quite the education on Mycoplasmas, and my birds had Mycoplasma Synoviae and Mycoplasma Gallisepticum both, the vet also told me about the strains, and he told me I had a very viralent and strong strains of it and that I would never get rid of it, and that I needed to depopulate. That was the first time I had ever even heard the word Depopulate, I had to ask what he meant, I still don't like that word. I had to get rid of all my birds, any idea how hard that was when they all had names and were pets, I didn't have my birds for eating them, I had them for their eggs and as pets for my enjoyment to watch and intermingle with, so I was pretty well devastated.
It was after I had to get rid of my birds that I found what I use on the birds I have now and searched for clean tested birds, and like I said it took me about 2 years to locate and get them, so I'm pretty careful of any other birds I have, I normally don't take birds or eggs that aren't from tested flocks without knowing their conditions first. And then I treat my birds monthly with what I use for a Mycoplasma control program.
Almost forgot the Lab that did the testing charged me 56.04 for testing of the 4 birds, after it was all done and over with I had around 100 dollars in getting the 4 birds tested, I would have paid 300 just for the Ohio Lab to see them and the costs of the same tests were higher here in Ohio than what I paid for the out of state costs.
So I can tell you how to test and where to send the samples for testing.
After I got rid of my birds I had to dissinfect and clean everything and wait 6 months before getting new birds and was told to try and find birds that was tested clean of all diseaes, which is more than the NPIP testing normally, the other tests have to be asked for and most don't ask for the other tests because of the cost. So it took me almost 2 years to locate and get my birds, in the time I was waiting I kept searching for a cure for the Mycoplasmas in the birds, and what I use is what I found, I could have kept it to myself since I was the only one that found it and kept persuing what I found, what I use is not available here, oddly enough its made here was what I was told and shipped to Europe where it is labeled for use with pigs and poultry, I found what we have here, same drug, a little different amount, so we are using it off label for the poultry and using the European sites information for dosages and precautions, and it does work. After as long as I waited to get my birds I wanted to have something to try and keep them clean of it, no way did I want that back again. I use Tek-trol aerosol spray for when I go to get feed or around other poultry to spray my clothes and shoes and nomally take an extra pair of shoes so when I reach my vehicle I can change shoes and put the others in a bag, after any poultry show I go thru the car wash before coming home, that is how I try to make sure I don't bring anything home.
I did just recently take 2 Hens in that I know have Mycoplasma, I am currently treating them and am getting results with what I use, when I do testing here in about the next month I will know what the levels are for the birds I have recently acquired, and like I said normally I don't take the chance, I knew ahead of time the birds condition, what I use is specifically designed to work with Mycoplasma as a preventative and a treatment and will only work for the Mycoplasmas, so I know that is what it is, if it wasn't I wouldn't be getting results. And the only reason why I took these 2 Hens is because they are very rare and practically non existant. What I use also keeps most strains of mycoplasmas from passing to the eggs. I will feel better after I get the testing done, and I have done so much testing with my birds at different time, that I have decided this coming Spring to become an NPIP tester, and am on the list for them to call when the program for testing starts. I figure that is the best way for me to help others to help their birds.