Suspect the poster may have previously read something
like this . If so, you can look at feed restriction regimen for Cornish Cross birds to get an idea of how that's carried out in practice.
/edit traditionally, that been quantitative feed restricts - feeding a set amount once or twice daily. More recently, qualitative feed restrictions have been tested, and are generally superior (essentially, a complete feed, but lower total energy, lower overall protein, so the birds need to eat more of it to meat their needs, stretched over a longer time horizon). As "more feed" (even lower cost feed) is generally not economically viable, and reduced growth rates = reduced table weight/time, its easy to understand why the commercial chicken meat industry isn't pursuing the strategy, and doing little to study it. You will find more info on feeding of breeding lines for fast growth birds, whose economic value is defined by reproductive success, not table weight.
With those long leg bones, you definitely want to consider your Calcium/Phosphorus ratios. Excess calcium inhipits P uptake, and can result in numerous bone problems, particularly during formation.
