How long do broiler chickens take to reach market weight?

Broiler chickens usually reach market weight in about 35–49 days, at roughly 4.4–6.6 lb live weight, according to poultry classification conventions and breed documentation. Fast-growing crosses mature sooner than slower-growing local or dual-purpose chickens, and actual finishing time depends on feed, health and housing conditions.

Choose the finishing weight around your buyer rather than the calendar alone. Broiler market and value-chain practice identifies smaller whole-bird markets that prefer about 3.3–4.4 lb live, while portioning and foodservice buyers often want heavier birds. Extra growing time uses more feed per pound gained, so keeping birds longer only makes sense if the buyer rewards the extra weight.

For example, the supplied smallholder plan uses 500 Ross 308 birds in a naturally ventilated, deep-litter house at about 70°F, targeting about 6.2 lb live weight at 42 days. That matches a common target in Ross 308 performance objectives, but it is a planning goal, not a guarantee. The example’s realistic feed conversion is 1.68 rather than the standard 1.55, so budget for the actual house performance and weigh birds regularly to check progress.

Market age is not the same as the interval between batches. Standard broiler production planning practice allows one to two weeks for clean-out and rest after a 35–42-day grow-out, supporting roughly six to seven cycles annually when scheduling permits. The supplied example budgets a more conservative 5.5 cycles a year; use your own turnaround time and confirmed sale dates when planning annual output.