Percent Protein in Milk

[bigredfeather]

I often give my meat birds the extra raw goat milk that we have. My milk tests at 4% protein and 4% fat. I am wondering how to convert the amount of protein in the milk to the equivalent in dry feed. Milk is 85-90% water if that helps. I don't think 4% is correct.

What I'm trying to figure out is if I want to reduce their grain feed and replace with milk, how much milk will replace the grain on an equal basis.

 

[ChickensAreSweet]

https://www.backyardchickens.com/t/77017/milk-for-chickens/10
see post #12- he is a commercial egg producer and knows his stuff

http://www.gov.mb.ca/agriculture/livestock/poultry/bba01s12.html
from 1945

see lionsgrip too:
http://www.lionsgrip.com/protein.html
I use lbs instead of parts, as the protein is calculated by mass not volume.