You are very correct in your statement that the breed is key in longevity of production. However healthy hens have been known to lay for 10 years. They just don't lay very often.
3 to 4 year old hens should be expected to take a few months off in winter. As long as you are comfortable with that, you don't need to cull. Now that we're past winter solstice, production may resume in the next month or 3.
I've never had to cull a hen for non-production. I've either sold them or lost to predation first. I just lost a 6 year old Ameraucana hen that was still laying to a mink.
Either of those feeds would be fine. No need to buy 2. The nutrition is very similar in each and both appropriate for non-laying hens. I assume your birds molted about the time that production stopped.
I prefer pellets because there is much less waste than with mash or crumbles and the nutrition is better because there are too many fines in the latter 2.
Feed production is basically grain and legumes are ground, then mixed with all the other ingredients (vitamins, minerals, amino acids, fats, etc.) Most of those things are added as powders or liquid. Those powders separate out of all feeds and that's where the goodies are. With pellets and crumbles, a binding agent is added and the feed goes through a pelletizer and then a crumbler to get crumbles. Mash is more finely ground and IMO, most appropriate for caged hens.
3 to 4 year old hens should be expected to take a few months off in winter. As long as you are comfortable with that, you don't need to cull. Now that we're past winter solstice, production may resume in the next month or 3.
I've never had to cull a hen for non-production. I've either sold them or lost to predation first. I just lost a 6 year old Ameraucana hen that was still laying to a mink.
Either of those feeds would be fine. No need to buy 2. The nutrition is very similar in each and both appropriate for non-laying hens. I assume your birds molted about the time that production stopped.
I prefer pellets because there is much less waste than with mash or crumbles and the nutrition is better because there are too many fines in the latter 2.
Feed production is basically grain and legumes are ground, then mixed with all the other ingredients (vitamins, minerals, amino acids, fats, etc.) Most of those things are added as powders or liquid. Those powders separate out of all feeds and that's where the goodies are. With pellets and crumbles, a binding agent is added and the feed goes through a pelletizer and then a crumbler to get crumbles. Mash is more finely ground and IMO, most appropriate for caged hens.