Protein Needs Through the Seasons: Growth, Lay, Molt, and Winter

A hen's year is not flat. She grows, she lays, she drops her feathers and she gets through the cold months, and each phase asks something different of her feed. The good news for the backyard keeper is that you rarely need to mix anything special. What you need is to understand which phase you are in and make small, sensible adjustments.

Start With the Baseline

Published protein targets vary a little by source. The eXtension guide to feeding chickens gives chick starter at about 20 to 22 percent, pullet grower at 14 to 16 percent and layer feed at 15 to 18 percent. It adds that layer diets should hold at least 14 percent and that 16 percent is common. Oregon State University's extension publication on feeding laying hens gives somewhat different bands, with starter at 18 to 20 percent and layer feed around 16 percent. The difference reflects bird type and publication date. Speckled Sussex are a dual-purpose breed, so treat these figures as a range and check the tag on the bag you buy.

Growth: Chicks and Pullets

Early growth is when protein matters most. Chicks are building frame, muscle and feathers quickly. Use a starter feed, then move to a grower as the bird develops. Our brooder guide covers the practical side. Two cautions from extension sources:

• Do not switch young birds to layer feed early. The University of Maine bulletin warns that the high calcium in laying mash can cause growth problems and kidney damage in growing poultry.
• Do not assume that more protein is always better. Fast growth is not always the goal in a heritage-type breed, and a steady, well-fed pullet generally does better than a rushed one.

Lay: The Long Middle of the Year

A hen in lay is converting feed into eggs every day or nearly so. Standard layer feed or an all-flock feed with oyster shell on the side covers this for most backyard flocks. The point to watch is not protein alone but the whole ration, because treats and scratch dilute what the bag provides. See our guide on scratch, treats and the 10 percent rule for a practical way to keep that in check.

If production drops, do not jump to a protein explanation first. Light, stress, parasites and age are more common causes; our article on why hens stop laying walks through them.

Molt: Feathers Are Mostly Protein

Feathers are made largely of protein, so molting hens often benefit from feed that does not fall short on it. Many keepers move to a feed with a bit more protein during a heavy molt, since laying has paused and calcium demand is lower. The eXtension guide notes that hens stop laying during molt and describes how timing varies, with late molters shedding over two to three months and early molters sometimes taking up to six. It also notes that fasting hens to force a molt is prohibited in many countries, which is not something a backyard keeper should consider anyway.

A sensible approach, offered here as common practice rather than a prescription: keep the hens on a complete feed, consider an all-flock or grower-type ration with oyster shell offered separately for the duration of the molt, and avoid piling on treats. Our guide to feeding through a molt has the full discussion. If you are unsure, ask your local extension office or a veterinarian familiar with poultry.

Winter: Energy First

Winter is mostly about energy. The eXtension page notes that feed intake rises in cold weather because birds eat to maintain body temperature. In other words, a Speckled Sussex in January will eat more of the same feed, rather than needing a different one. Ensure feeders never run empty, keep water open, and read our article on winter care for heavy breeds.

Some keepers add a handful of cracked corn or scratch late in the day as a source of warmth. That is reasonable in moderation, but corn is low in protein, so too much will dilute the ration. Oregon State's publication also notes that pasture offers little feed value in late fall and winter, which means the free protein from insects and young greens disappears just as the cold arrives.

Summer: A Quiet Reminder

In heat, hens eat less, so a ration that is adequate in cool weather can be marginal in a heat wave. Keep feed fresh, store it out of the sun and consider feeding more of the daily ration in the cooler hours. Water matters even more at this time; see our piece on water quality and drinkers.

A Seasonal Cheat Sheet

Season or stage	Main concern	Practical step
Chick	Fast growth	Starter feed
Pullet	Steady development	Grower, no layer feed too early
Laying	Shell and egg production	Layer or all-flock plus oyster shell
Molt	Feather regrowth	Complete feed, limit treats, consider a slightly higher-protein ration
Winter	Keeping warm	Unlimited feed, open water, modest scratch

Do Not Over-Engineer It

A complete commercial feed already contains what a typical hen needs. Extra protein supplements, such as mealworms, are fine as treats but should not replace the main ration. If you want to explore the options for buying feed and supplies, agriculture.directory lists agricultural resources, and farm.fm's farming section has more rural reading.

This site is independent and not affiliated with breed associations. For health concerns, such as feather loss that seems abnormal, consult a veterinarian.