A Feeding Trial Conducted at Six Different Locations

Abstract

OVER the past two decades, the random sample test has become a widely used tool in assessing the relative merits of commercial breeds and strains of poultry. For a number of reasons, random sample tests of commercial poultry rations have not been organized on an extensive scale, but comparisons of commercial rations are nevertheless made locally by a variety of organizations and individuals. Poultry rations are continually being compared by numerous research institutions, and results of these feeding trials, frequently conducted with a single breed or strain in a single environment, are used to recommend one formula over another for general use under a wide variety of conditions.In accepting such recommendations, we must assume that the order in which the rations rank under the test conditions can be used to predict the relative levels of performance when they are fed to other strains of birds in other environments, i.e…