Yes it is really frustrating and upsetting when you put so much effort into the best care possible and things still go wrong.
Everyone's circumstances are different so what works for one person may not work for another. Minerals in soils are different, climates are different, forage is different, management systems are different and all these things plus many more no doubt can have an impact on trace element uptake and dietary balance. Of course keeping hens in cages irons out many of these variations and allows the industry to feed them an optimum formulated feed whereas in the real world we have to be prepared to be flexible and learn from our own experience and figure out what works best for us. I'm not saying a change of feed is necessarily the right decision but might be worth trying.
Everyone's circumstances are different so what works for one person may not work for another. Minerals in soils are different, climates are different, forage is different, management systems are different and all these things plus many more no doubt can have an impact on trace element uptake and dietary balance. Of course keeping hens in cages irons out many of these variations and allows the industry to feed them an optimum formulated feed whereas in the real world we have to be prepared to be flexible and learn from our own experience and figure out what works best for us. I'm not saying a change of feed is necessarily the right decision but might be worth trying.