My intention in starting this thread is to delve into this topic in a neutral and scientific manor. It is NOT intended to stir up discord or discontent. I am aware that there are strong feelings both pro and con on this issue.
Here's a quote from another area of this forum - -
"* Regarding feeding CAT FOOD to chickens,
the following is from DLHunicorn in response to the listing of cat food in this Treats Chart: (A word to the wise, and thank you, DLHunicorn)
"You all know how I feel on cat food and I have posted the links and reasoning behind my objections several times ...it can potentially be detrimental to your birds health and even deadly in the right circumstances and for this reason I feel it should be left off the chart (as when you put it on it is as if you are condoning its use) I will repost here one of the sources for my objection:
..."While it is nutritionally essential, methionine excesses are far more toxic to poultry than similar excesses of tryptophan, lysine, and threonine (National Research Council, 1994). Force feeding methionine to excess can result in death to chicks (National Research Council, 1994). A dosage of 2 g / mature cat / day (20 to 30 g / kg dry diet) for 20 days induces anorexia, ataxia, cyanosis, methemoglobinemia and Heinz body formation resulting in hemolytic anemia (Maede, 1985). ..."
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At first glance this makes methionine look like a serious health problem for chickens. However, this is not the case. First off, I want to see if I can understand the above quote and if so, put it in perspective.
" Force feeding methionine to excess can result in death to chicks (National Research Council, 1994)."
Well, of course! Force feeding of water, corn or almost any other substance to excess will cause death in chickens of any age! I fail to see the relevance of data taken from any program of force feeding to excess and the backyard raising of chickens.
Next, "A dosage of 2 g / mature cat / day (20 to 30 g / kg dry diet)" ....
This statement fails to identify what substance is being fed to a mature cat but I assume it's 2 grams of methionine per 20 to 30 grams (one ounce approximately). This is a massive overdose of methionine!
Here's a quote from another area of this forum - -
"* Regarding feeding CAT FOOD to chickens,
the following is from DLHunicorn in response to the listing of cat food in this Treats Chart: (A word to the wise, and thank you, DLHunicorn)
"You all know how I feel on cat food and I have posted the links and reasoning behind my objections several times ...it can potentially be detrimental to your birds health and even deadly in the right circumstances and for this reason I feel it should be left off the chart (as when you put it on it is as if you are condoning its use) I will repost here one of the sources for my objection:
..."While it is nutritionally essential, methionine excesses are far more toxic to poultry than similar excesses of tryptophan, lysine, and threonine (National Research Council, 1994). Force feeding methionine to excess can result in death to chicks (National Research Council, 1994). A dosage of 2 g / mature cat / day (20 to 30 g / kg dry diet) for 20 days induces anorexia, ataxia, cyanosis, methemoglobinemia and Heinz body formation resulting in hemolytic anemia (Maede, 1985). ..."
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At first glance this makes methionine look like a serious health problem for chickens. However, this is not the case. First off, I want to see if I can understand the above quote and if so, put it in perspective.
" Force feeding methionine to excess can result in death to chicks (National Research Council, 1994)."
Well, of course! Force feeding of water, corn or almost any other substance to excess will cause death in chickens of any age! I fail to see the relevance of data taken from any program of force feeding to excess and the backyard raising of chickens.
Next, "A dosage of 2 g / mature cat / day (20 to 30 g / kg dry diet)" ....
This statement fails to identify what substance is being fed to a mature cat but I assume it's 2 grams of methionine per 20 to 30 grams (one ounce approximately). This is a massive overdose of methionine!
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