الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Economic efficiency as studied in isocaloric rations containing different levels of protein quality values proves to be a better measure of comparison between different strains of chicks than feed efficiency alone. It is found possible that while the latter is on the positive side. The former which is more important would be on the negative side. This conclusions is also found true when the nicholas strain is subjected to the same investigation