You have a mystery on your hands, and it behooves you to solve it. It may require a little out-of-pocket expense. Can you consider that?
There are some things that could be killing all these chicks that no one thinks about. If you take a dead chick who has recently died to a lab, it can be dissected and screened for diseases. This is important because some diseases are transmitted through the hen into the egg then to the developing chick, and once they enter your soil and buildings, can be all but impossible to eradicate.
Another source you might consider testing is your tap water. It may not make you sick, but if there are enough of the right contaminants, they can kill tiny chicks. Your health department can have your water tested, maybe for free.
Your brooder may also be to blame. Some plastics, when heated, give off dangerous fumes. The same goes for some types of Teflon heat lamps. If the brooder is too small, the chicks can become heat stressed even though you think the brooder is the "correct" temperature. If chicks have insufficient room in which to move away from the heat source in order to self regulate their accumulated body heat, death can result.
So put on your tweed hat, grab the magnifying glass, and do some serious "sleuthing"! And let us know what your turn up!
There are some things that could be killing all these chicks that no one thinks about. If you take a dead chick who has recently died to a lab, it can be dissected and screened for diseases. This is important because some diseases are transmitted through the hen into the egg then to the developing chick, and once they enter your soil and buildings, can be all but impossible to eradicate.
Another source you might consider testing is your tap water. It may not make you sick, but if there are enough of the right contaminants, they can kill tiny chicks. Your health department can have your water tested, maybe for free.
Your brooder may also be to blame. Some plastics, when heated, give off dangerous fumes. The same goes for some types of Teflon heat lamps. If the brooder is too small, the chicks can become heat stressed even though you think the brooder is the "correct" temperature. If chicks have insufficient room in which to move away from the heat source in order to self regulate their accumulated body heat, death can result.
So put on your tweed hat, grab the magnifying glass, and do some serious "sleuthing"! And let us know what your turn up!