As farming became more specialized, many farms kept flocks overlarge to be fed during this way, and nutritionally complete poultry feed was developed. Modern feeds for poultry consists largely of grain, protein supplements like soyabean oil meal, mineral supplements, and vitamin supplements. the number of feed, and therefore the nutritional requirements of the feed, depending upon the load and age of the poultry, their rate of growth, their rate of egg production, the weather