When I used to feed a layer my large breed roosters would die by age 4. I noticed in my bantam flock the roosters lived much longer. My bantam flock was always fed a non medicated grower for most of the year.
A few years back I switched everyone to an All Flock ration with a separate bowl of oyster shells for the calcium needs and so far my big roosters are living longer. My oldest will be 7 this coming spring.
So in my experiences a layer is hard on roosters and shouldn't be fed to them. A layer isn't necessary as the calcium needs can be met by the oyster shells, so I don't understand why so many continue to feed it.
Also I have better shell quality without the layer. The calcium in it is a one size fits all thing, and it doesn't fit my flock as all my hens lay at a different rate and are different ages.
A few years back I switched everyone to an All Flock ration with a separate bowl of oyster shells for the calcium needs and so far my big roosters are living longer. My oldest will be 7 this coming spring.
So in my experiences a layer is hard on roosters and shouldn't be fed to them. A layer isn't necessary as the calcium needs can be met by the oyster shells, so I don't understand why so many continue to feed it.
