Ratio of feed to corn to get 16-17% protein

Discussion in 'Feeding & Watering Your Flock' started by homesteadmomma, Jul 4, 2011.

  1. homesteadmomma

    homesteadmomma Chillin' With My Peeps

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    Yeah, I'm sure I'm making this harder than it really is, but could someone tell me how much cracked corn I would need to mix with 21% crumbles to get 16-17% protein. Thanks so much.
     
  2. Chris09

    Chris09 Circle (M) Ranch

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    Quote:60 lbs crumbles to 40 lbs crack corn if you want 16% feed and 70 lbs crumbles to 30 lbs crack corn if you want 17% feed.

    21% feed ÷ 100 = .21 x 60 lbs = 12.6%
    8.5 corn ÷ 100 = .85 x 40 lbs = 3.4 %

    12.6% + 3.4% = 16% feed

    Chris
     
  3. homesteadmomma

    homesteadmomma Chillin' With My Peeps

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    Mar 26, 2011
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    Thank you so much, and it turns out I wasn't making it harder than it really was, I've just been out of school a little too long, or maybe I have too many toddlers.
     
  4. Speceider

    Speceider Chillin' With My Peeps

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    But, remember you are changing the metabolizable energy of the diet (affecting the amount they eat), and the amino acid composition of the diet. It'll probably now be low in sulfur amino acids so you effective protein will be less. It's not as easy as JUST changing percentages.

    Clint
     
  5. homesteadmomma

    homesteadmomma Chillin' With My Peeps

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    Where do the sulfur aminos come from? Is this something they can receive through foraging/free ranging?
     
  6. Speceider

    Speceider Chillin' With My Peeps

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    Protein is composed of 22 naturally ocurring amino acids. Cystein and methionine are sulfur amino acids. Other essental amino acids (meaning they have to be in the diet and cannot be synthsized by the birds) are leucine and cystein. Recommeded requirements for white-egg layes are 0.52 % for methionine, Leusine 0.8%, lysine 0.0.52%, and methionine+cystein 0.47 percent for a diet with a metabolizable energy content of 2900 kcal/kg diet. That is about what you pelleted diet composition should be. The ME may differ, but the AA content will be adjusted to the ME level to assure they get enough. Corn is 0.0.18% methionine, 0.18% cystine, 0.26% lysine, and 1% leucine and 3350 kcal.kg.

    So mixing with corn will increase the ME (causing them to eat less) while decreasing the important amino acid composition, meaning they will get even less.

    Clint
     

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