- Sep 8, 2013
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If one is formulating their own feed without supplements or testing for nutrient density, there's a possibility that one or more of the 38 essential nutrients may be deficient or not in the proper balance. Though they may lay well or grow well, I surmise that deficiencies would be exposed in a closed flock where one is reproducing generations on that same feed.
http://www.merckmanuals.com/vet/pou...ltry/nutritional_requirements_of_poultry.html
This is really interesting. So, if I understand this theory correctly it means that it can take more than one generation for symptoms of certain nutritional deficiencies to manifest? For example, the mother lays well even though there is a phosphorous and sodium deficiency, but that deficiency causes her chicks to have a lower immunity o certain viruses, that kind of thing?
If so it would be really hard to identify or confirm. As it stands now, sometimes I have chickens that drop dead for no apparent reason, while her brothers and sisters all remain ok for years to come.
Generally,I just allow my flock to have access to various different rotating pastures and agricultural fields, on a rotational basis, so in addition to the feed I make for them they can forage for a lot of their own stuff. I firmly believe that this will more than make up for any specific deficiency that might occur in the feed. these chickens certainly eat better and get better access to a wider range of food than their wild counterparts, nonetheless their wild counterparts still thrive so I'm not too worried

note that I give them water soluble natural, additive free vitamin powder from time to time as well, but not very often.