Contrary to the idea of a daily amino acid “requirement,”
these results may be used to determine profit
maximizing levels of balanced dietary protein (and
therefore amino acids) based on the cost of protein andreturns from different egg sizes (Heady et al., 1980). If
a requirement is to be reported for research studies, it
should be specified that the requirement is for maximum
egg output, or feed efficiency, and so on. More
realistically, response equations should be derived so
producers can determine the most economical feeds under
each technical and economic environment.