Layer Feed Formulation: Balancing Energy and Protein

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

Layer hen nutrition is dictated by daily nutrient intake targets, not just feed percentages, requiring adjustments for variable feed consumption influenced by temperature and bird age to ensure adequate daily protein (17-18g), energy (285-300 kcal ME), and calcium (3.5-4.0g) during peak production.
Amino acids, particularly methionine (0.35-0.40g/day) and lysine (0.70-0.80g/day), are more critical than crude protein percentage, with deficiencies leading to reduced egg size and production, necessitating precise formulation or supplementation.
Feed intake is primarily driven by energy requirements; increasing energy density reduces consumption, while decreasing it increases intake, thus requiring ration formulation based on predicted daily feed consumption to meet nutrient targets.
Calcium requirements escalate sharply with the onset of lay (3.5-4.5%), with a critical need for both fine particles for immediate absorption and large particles (2-4mm limestone/oyster shell) for sustained overnight release to support eggshell formation.
Phase feeding programs are essential, adjusting protein levels downwards as the flock ages (e.g., 17-18% at peak, 15-16% in late lay) while maintaining or increasing calcium to optimize production, minimize costs, and support eggshell quality.

Feeding laying hens is the single most important management decision you make each day. The feed represents 60 to 70 percent of the total cost of egg production, and the balance between energy and protein in that feed determines how many eggs you get, how large those eggs are, and how long your flock stays in profitable production. This guide explains how to formulate a layer ration that meets the nutritional needs of your hens at every stage of the laying cycle. It is written for small to mid-scale commercial egg producers, farm managers, and serious hobby farmers who mix their own feed or work with a local mill to create custom rations.

You will learn the nutrient targets that matter, how to read a feed tag, how to adjust rations for temperature and bird age, and how to troubleshoot common problems like low egg production, small eggs, and excessive fat gain. The guide also covers the most common formulation mistakes, how to monitor flock performance, and when to bring in a veterinarian or extension agent.

At a Glance

Laying hens need a diet with about 17 to 18 percent crude protein and 2,750 to 2,900 kcal of metabolizable energy per kilogram of feed during peak production.
Energy and protein must be balanced. Too much energy with too little protein causes hens to become fat and lay fewer eggs. Too much protein with too little energy wastes protein and increases feed cost.
Calcium needs rise sharply when hens start laying. A laying ration needs 3.5 to 4.5 percent calcium, supplied as large-particle limestone or oyster shell.
Feed intake drives your formulation. Hens eat more in cold weather and less in hot weather. Adjust the nutrient density of the ration so hens consume the right amount of protein and energy each day.
Use a two-phase or three-phase feeding program. Start with a higher protein ration at the onset of lay, then step down protein and step up calcium as the flock ages.
Always weigh feed and track egg production. You cannot manage what you do not measure.
Have your feed analyzed by a laboratory at least once per year, and more often if you mix your own feed.

Understanding the Layer Hen's Nutritional Needs

A laying hen is a biological factory. She takes in feed and water, and she converts those inputs into eggs, body maintenance, and body growth. The egg itself contains about 12 to 13 percent protein, mostly in the albumen, and about 10 percent fat, mostly in the yolk. A hen producing at a high rate will lay an egg nearly every day, and each egg requires a substantial input of nutrients.

Protein supplies the amino acids that build egg white, yolk proteins, and the hen's own muscle and organ tissue. Energy, measured as metabolizable energy, powers all of the hen's metabolic processes, including breathing, movement, digestion, and egg formation. The two are linked. If a hen eats more energy than she needs for maintenance and production, she stores the excess as fat. If she eats too little energy, she will use dietary protein for energy instead of for egg formation, which wastes expensive protein and reduces egg output.

The goal of layer feed formulation is to provide the right amount of both energy and protein so that the hen consumes the correct daily quantity of each nutrient. This is not the same as putting a fixed percentage in the feed. Because hens eat different amounts of feed depending on temperature, body weight, and production rate, you must formulate the ration based on expected feed intake.

Amino Acids Matter More Than Crude Protein

Crude protein is a useful starting point, but hens do not need protein as a single nutrient. They need specific amino acids. The most important ones in layer nutrition are methionine, lysine, and threonine. Methionine is usually the first limiting amino acid in a corn-soy layer diet, meaning it is the one most likely to be deficient. Lysine is the second limiting amino acid.

When you formulate a ration, you should target specific amino acid levels, not just a crude protein percentage. A typical peak-layer ration contains about 0.38 to 0.42 percent methionine, 0.75 to 0.80 percent lysine, and 0.55 to 0.60 percent threonine. If you use a commercial premix or a feed formulation software, you can adjust these levels precisely.

For most small and mid-scale producers, the practical approach is to use a standard layer ration that has been formulated by a nutritionist and then adjust it slightly based on your flock's performance. Do not try to build a ration from raw ingredients without a formulation program. The margin for error is too small.

Energy Density and Feed Intake

Hens eat to satisfy their energy requirement. This is the single most important concept in layer feed formulation. If you make the feed more energy dense, hens will eat less of it. If you make it less energy dense, they will eat more. Your job is to predict feed intake and then provide the right concentration of protein, calcium, phosphorus, and other nutrients in that expected amount of feed.

A standard layer ration in a temperate climate contains about 2,800 kcal of metabolizable energy per kilogram. At that energy density, a hen producing at 90 percent will eat about 105 to 115 grams of feed per day. In hot weather, feed intake can drop to 90 to 100 grams per day. In cold weather, it can rise to 120 to 130 grams per day.

When feed intake drops in hot weather, you must increase the concentration of protein, calcium, and other nutrients in the feed so the hen still gets her daily requirement. When feed intake rises in cold weather, you can lower the concentration of those nutrients.

Step-by-Step Guide to Formulating a Layer Ration

This section walks you through the practical process of formulating a layer ration, whether you mix your own feed on the farm or specify a custom mix to your local feed mill.

Step 1: Determine Your Flock's Daily Nutrient Requirements

Before you can formulate a feed, you need to know what your hens need each day. The daily requirements depend on three factors: body weight, egg production rate, and environmental temperature.

A standard 4-pound (1.8 kg) laying hen at peak production needs approximately:

17 to 18 grams of crude protein per day
285 to 300 kcal of metabolizable energy per day
3.5 to 4.0 grams of calcium per day
0.4 to 0.45 grams of available phosphorus per day
0.35 to 0.40 grams of methionine per day
0.70 to 0.80 grams of lysine per day

These are daily intake targets, not feed percentages. To convert them to feed percentages, divide the daily requirement by the expected daily feed intake.

Example: If your hens need 18 grams of protein per day and you expect them to eat 110 grams of feed, the ration needs 18 divided by 110, which equals 16.4 percent crude protein.

Step 2: Estimate Expected Feed Intake

Feed intake is the variable that connects your nutrient targets to the actual ration. Use the following baseline figures, then adjust for your specific conditions.

For a 4-pound hen in a temperature-controlled house at 70 degrees Fahrenheit, expect:

100 to 110 grams per day at peak production
95 to 105 grams per day in the second half of lay
90 to 100 grams per day in hot weather above 85 degrees
115 to 130 grams per day in cold weather below 50 degrees

Heavier hens eat more than lighter hens. A 5-pound hen will eat about 10 percent more feed than a 4-pound hen. Hens in their first laying cycle eat less than older hens because they are smaller.

If you are not sure what your hens are eating, measure it. Weigh the feed you give each day, weigh what is left at the end of the day, and divide by the number of hens. Do this for a week to get a reliable average.

Step 3: Choose Your Base Ingredients

Most layer rations are built around corn and soybean meal. Corn provides energy, and soybean meal provides protein. You can substitute other grains and protein sources, but corn and soybean meal are the standard because they are widely available, consistent in quality, and well understood by nutritionists.

A typical corn-soy layer ration looks like this:

60 to 65 percent corn
20 to 24 percent soybean meal (48 percent protein)
6 to 8 percent limestone or oyster shell
1.5 to 2 percent dicalcium phosphate
0.3 to 0.5 percent salt
0.5 to 1 percent vitamin and mineral premix
0.1 percent synthetic methionine (if needed)
0.05 percent synthetic lysine (if needed)

The exact percentages depend on the nutrient content of your ingredients. Corn can vary from 8 to 10 percent protein and from 3,300 to 3,500 kcal of metabolizable energy per kilogram. Soybean meal contains about 46 to 48 percent protein and about 2,400 kcal per kilogram.

If you mix your own feed, you must have your ingredients tested or use published nutrient tables from your extension service. Do not guess. A batch of corn that is 2 percent lower in protein than expected will produce a ration that is noticeably deficient.

Step 4: Calculate the Ration

If you are using a feed formulation program or spreadsheet, you enter the nutrient content of each ingredient and the target nutrient levels, and the program calculates the best mix. If you are doing this by hand, use the Pearson square method for two ingredients, then add the premix and calcium sources separately.

The Pearson square method works like this. Suppose you want a 17 percent crude protein mix using corn at 9 percent protein and soybean meal at 48 percent protein.

Draw a square. Write the target protein (17) in the center. Write the protein content of corn (9) at the upper left corner and soybean meal (48) at the lower left corner. Subtract diagonally: 48 minus 17 equals 31 parts corn. 17 minus 9 equals 8 parts soybean meal. Total parts are 31 plus 8 equals 39. Corn is 31 divided by 39, which equals 79.5 percent. Soybean meal is 8 divided by 39, which equals 20.5 percent.

This gives you a protein-only mix. You then need to adjust for the calcium, phosphorus, salt, and premix that will be added. Because those ingredients dilute the protein, you need to account for them in your calculation.

A practical approach is to formulate the grain-protein portion to a slightly higher protein level, then add the calcium, phosphorus, salt, and premix. For example, if you want a final ration at 17 percent protein and you plan to add 10 percent of other ingredients, the grain-protein portion needs to be at 17 divided by 0.90, which equals 18.9 percent protein.

Step 5: Add Calcium and Phosphorus

Calcium is critical for eggshell formation. A laying hen needs 3.5 to 4.5 percent calcium in her feed, depending on her age and production rate. Young hens at peak production need the higher level. Older hens in late lay need slightly less because their shells are naturally thicker.

The form of calcium matters. Use a mix of fine and large particle calcium. The fine particles dissolve quickly in the digestive tract and provide calcium for immediate eggshell formation. The large particles sit in the gizzard and release calcium slowly, especially during the night when the hen is forming the shell for the next day's egg.

Limestone and oyster shell are the two common calcium sources. Oyster shell is often preferred because the particles are more uniform and the calcium is more available. If you use limestone, look for a product with a particle size of 2 to 4 millimeters for the large particle portion.

Phosphorus is needed for bone health and egg production. Use 0.4 to 0.5 percent available phosphorus in the ration. Most of this comes from dicalcium phosphate or monocalcium phosphate. Do not use too much phosphorus, because excess phosphorus can interfere with calcium absorption.

Step 6: Add Salt, Vitamins, and Minerals

Salt provides sodium and chlorine, which are essential for egg production. Use 0.3 to 0.5 percent salt in the ration. Do not use more, because excess salt increases water consumption and can cause wet litter.

Vitamins and minerals are typically added as a premix. A commercial layer premix contains vitamins A, D, E, and K, the B vitamins, and trace minerals like zinc, manganese, copper, iron, and selenium. Use the premix at the rate recommended by the manufacturer, usually 0.5 to 1 percent of the ration.

Vitamin D is especially important for layers because it controls calcium metabolism. A deficiency of vitamin D causes thin-shelled eggs and reduced production even when calcium levels in the feed are adequate.

Step 7: Mix the Feed Thoroughly

Mixing is as important as formulation. A ration that is formulated correctly but mixed poorly will produce uneven results. Some hens will get too much of one nutrient and too little of another.

If you mix your own feed, use a vertical or horizontal mixer and run it for the recommended time. Do not overmix, because that can cause separation of fine and coarse particles. After mixing, take a sample from several places in the mixer and check that the feed looks uniform.

If you buy a complete feed from a mill, you do not need to mix anything. If you buy a concentrate or premix and mix it with grain on the farm, follow the manufacturer's instructions exactly.

Phase Feeding Programs

Layer hens do not need the same ration throughout their laying cycle. A phase feeding program adjusts the ration as the flock ages and as production changes. This saves money and keeps hens in better condition.

Phase 1: Pre-Lay and Onset of Lay (16 to 20 Weeks)

In the weeks just before the first egg, hens need a ration that supports the rapid development of the reproductive tract and the accumulation of calcium in the bones. This is called the pre-lay period.

Feed a pre-lay ration with 17 to 18 percent protein and 2 to 2.5 percent calcium. Do not feed a high-calcium layer ration during this period, because the sudden high calcium can cause kidney damage and reduce feed intake.

Switch to the full layer ration when the flock reaches about 5 percent egg production. This is the point at which about 1 in 20 hens has laid her first egg.

Phase 2: Peak Production (20 to 40 Weeks)

During peak production, hens need the highest nutrient density. Feed a ration with 17 to 18 percent protein and 3.5 to 4.0 percent calcium. Energy should be around 2,850 to 2,900 kcal per kilogram.

This is the most critical phase. If the ration is deficient during peak production, the hen will never reach her full potential. She may also draw calcium from her bones to make eggshells, which can lead to cage layer fatigue or osteoporosis later in life.

Phase 3: Mid-Lay (40 to 60 Weeks)

As the flock ages, egg production gradually declines. Feed intake often increases slightly because the hens are heavier. You can reduce the protein level to 16 to 16.5 percent and keep calcium at 4.0 percent.

Egg size increases during this phase, so the hens still need adequate protein to support larger eggs. Do not cut protein too aggressively, or egg size will suffer.

Phase 4: Late Lay (60 Weeks and Beyond)

In late lay, production drops to 60 to 70 percent. The hens are fully mature and have lower protein requirements for maintenance. Feed 15 to 16 percent protein and 4.0 to 4.5 percent calcium.

Eggshell quality often declines in late lay, so the higher calcium level helps maintain shell strength. You can also increase the large particle calcium in the ration to provide a slower release of calcium overnight.

Adjusting for Environmental Temperature

Temperature has a large effect on feed intake. Hens eat less in hot weather and more in cold weather. You must adjust the ration to compensate.

Hot Weather Feeding

When temperatures rise above 80 degrees Fahrenheit, feed intake drops. A hen that normally eats 110 grams per day may eat only 90 grams at 90 degrees. If you keep the same ration, she will consume too little protein and calcium, and production will drop.

To compensate, increase the nutrient density of the ration. Raise protein to 18 to 19 percent, calcium to 4.2 to 4.5 percent, and energy to 2,900 to 3,000 kcal per kilogram. You can add a small amount of fat, such as vegetable oil or poultry fat, to increase energy density without increasing the volume of feed.

Also consider feeding during the cooler parts of the day. Provide feed in the early morning and late evening when hens are more likely to eat. Keep feed fresh and do not let it sit in the feeders in the heat, because stale feed reduces intake further.

Provide cool, clean water at all times. Hens drink more in hot weather, and water intake directly affects feed intake. A hen that cannot get enough water will stop eating.

Cold Weather Feeding

In cold weather, hens eat more to maintain body temperature. A hen that normally eats 110 grams per day may eat 125 grams at 30 degrees. If you keep the same ration, she will consume too much protein and calcium, which wastes money.

To compensate, you can lower the nutrient density of the ration. Reduce protein to 16 to 16.5 percent and calcium to 3.5 to 3.75 percent. Keep energy at the same level or slightly higher, because the hen needs more energy for warmth.

Do not reduce protein too much, because the hen still needs amino acids for egg production. The goal is to keep daily protein intake at the target of 17 to 18 grams, not to reduce it.

Common Formulation Mistakes

Even experienced producers make mistakes when formulating layer feed. Here are the most common problems and how to avoid them.

Mistake 1: Balancing Protein Percentage Instead of Daily Intake

The most common mistake is to think in terms of feed percentage rather than daily grams. A ration at 16 percent protein is correct for a hen eating 112 grams per day, but it is deficient for a hen eating 100 grams per day. Always calculate the daily intake and adjust the feed percentage to match.

Mistake 2: Ignoring Feed Intake Changes

Feed intake changes with temperature, bird age, and health status. If you do not measure feed intake regularly, you will not know when to adjust the ration. Weigh feed at least once per week and track the trend.

Mistake 3: Using Too Much Energy

High-energy feeds are tempting because they can improve feed conversion. But if the energy level is too high, hens become fat. Fat hens lay fewer eggs, have more prolapse problems, and are more likely to die from heat stress.

A good rule is to keep metabolizable energy between 2,750 and 2,900 kcal per kilogram. Do not go above 3,000 kcal per kilogram unless you have a specific reason and you are monitoring body condition closely.

Mistake 4: Using Fine Calcium Only

If all the calcium in the ration is ground into a fine powder, it dissolves too quickly in the digestive tract. The hen gets a surge of calcium during the day but has none available at night when she is forming the shell for the next day's egg. This results in thin-shelled eggs and increased shell breakage.

Use a calcium source with a mix of particle sizes. At least half of the calcium should be in particles of 2 to 4 millimeters.

Mistake 5: Forgetting to Add Methionine

Standard corn-soy rations are often marginal or deficient in methionine. If you do not add synthetic methionine, the hens will produce smaller eggs and lower egg numbers. This is one of the most cost-effective additions you can make to a layer ration.

Mistake 6: Using a Broiler Ration for Layers

Broiler rations are formulated for rapid growth, not egg production. They are too high in energy and too low in calcium for laying hens. Never feed a broiler ration to layers, even as a temporary measure.

Mistake 7: Changing the Ration Too Quickly

Hens need time to adjust to a new ration. If you switch from one feed to another abruptly, the hens may stop eating for a day or two, which will cause a drop in production. When changing rations, mix the old and new feed together over a period of 5 to 7 days, gradually increasing the proportion of new feed.

Monitoring Flock Performance

Formulating a good ration is only half the job. You also need to monitor the flock to confirm that the ration is working. The following indicators tell you whether your hens are getting the right nutrition.

Egg Production Rate

Track the number of eggs produced each day and calculate the production rate as eggs per hen per day. A healthy flock should reach 90 percent production at peak and hold that level for several weeks. If production drops below 85 percent during peak, the ration may be deficient in protein, energy, or amino acids.

Compare your production to the breed standard. If your flock is below the standard by more than 5 percentage points, investigate the cause before making changes.

Egg Weight

Weigh a sample of eggs each week. Egg weight should increase steadily during the first 20 weeks of lay, then stabilize. If egg weight is below the breed standard, the ration may be deficient in protein, methionine, or linoleic acid.

Small eggs are often the first sign of a protein or amino acid deficiency. If you see small eggs, check the protein and methionine levels in the ration first.

Shell Quality

Inspect the shells of a sample of eggs each day. Look for thin shells, rough shells, or shells with pale color. Thin shells indicate a calcium or vitamin D problem. Rough shells can indicate too much calcium or a problem with the calcium particle size.

Cracked eggs in the nest or on the collection belt are a sign of poor shell quality. Track the percentage of cracked eggs and investigate if it rises above 2 percent.

Body Weight

Weigh a sample of hens every 2 to 4 weeks. Hens should gain a small amount of weight during the laying cycle, but they should not become fat. If hens are gaining too much weight, the ration has too much energy. If they are losing weight, the ration has too little energy or protein.

Feel the breast muscle of a few hens. The breast should be firm and well-muscled, not soft and fat. A prominent keel bone with little muscle covering indicates the hen is losing weight.

Feed Intake

Weigh the feed given and the feed refused each day. Calculate the average feed intake per hen. Compare this to the expected intake for the temperature and stage of lay. If feed intake is higher or lower than expected, adjust the ration accordingly.

A sudden drop in feed intake is often the first sign of a health problem. If feed intake drops by more than 10 percent in a single day, investigate immediately.

Mortality and Culling

Track mortality and culling rates. Normal mortality in a layer flock is 0.1 to 0.2 percent per month. If mortality rises above this level, there may be a nutritional or health problem.

Fatty liver hemorrhagic syndrome is a common nutritional problem in over-conditioned hens. Affected hens die suddenly with a pale comb and a large, fatty liver. This condition is caused by excessive energy intake and is more common in caged layers.

Recordkeeping

Good recordkeeping is essential for successful layer feed management. Keep the following records for each flock:

Flock identification and breed
Date of hatch and date of housing
Daily egg production and egg weight
Daily feed intake
Weekly body weight samples
Feed formulation and nutrient analysis
Feed delivery dates and batch numbers
Mortality and culling records
Temperature and weather conditions
Any health problems and treatments

Use these records to evaluate the performance of each ration. If you change the formulation, record the change and compare the performance before and after. This is the only way to know whether a change was beneficial.

A simple spreadsheet is sufficient for most flocks. Enter the data daily or weekly and review the trends monthly. Look for patterns that indicate a problem, such as a gradual decline in egg weight or a sudden drop in feed intake.

When to Call a Veterinarian or Extension Agent

Most nutritional problems can be solved by adjusting the ration. However, there are times when you need professional help.

Call a veterinarian if:

Egg production drops by more than 20 percent in a few days
Mortality rises suddenly or exceeds 0.5 percent in a week
Hens show signs of illness such as respiratory distress, diarrhea, or neurological signs
Egg quality deteriorates suddenly, with many misshapen or shell-less eggs
You suspect a disease such as infectious bronchitis, Newcastle disease, or avian influenza

Call an extension agent or poultry nutritionist if:

You are formulating a ration for the first time and need help with the calculations
You want to use an unfamiliar ingredient and need to know its nutrient content
Your flock is producing below the breed standard and you cannot identify the cause
You need help interpreting a feed analysis report
You are considering a major change to your feeding program, such as switching from a complete feed to a custom mix

Do not wait until the problem is severe. A nutritionist can often identify a problem from your records alone and suggest a correction before you lose significant production.

Reportable Diseases

Some diseases that affect laying hens are reportable to animal health authorities. Avian influenza and Newcastle disease are the most important ones. If you see sudden high mortality, respiratory signs, or a rapid drop in egg production, contact your veterinarian immediately and do not move birds or equipment off the farm until you have a diagnosis.

The USDA Animal and Plant Health Inspection Service (APHIS) and the World Organisation for Animal Health (WOAH) provide guidance on reportable poultry diseases. Your veterinarian will know the reporting requirements in your area.

Special Considerations for Pastured and Free-Range Flocks

Hens that have access to pasture or outdoor range have different nutritional needs than caged hens. They eat grass, insects, and other forage, which provides some protein and energy but not enough to replace the complete ration.

Forage intake is highly variable. A hen on good pasture may consume 10 to 15 percent of her daily nutrient intake from forage, but this can drop to near zero in winter or on overgrazed pasture. Do not reduce the protein level in the ration to compensate for forage intake, because the forage intake is too unpredictable.

Instead, keep the ration at the standard levels and monitor body condition and egg production. If the hens are gaining too much weight on good pasture, you can reduce the energy level slightly. If they are losing weight or egg production is dropping, increase the energy level.

Pastured hens are more active than caged hens and may need slightly more energy for movement and thermoregulation. Provide the same protein level but consider adding 50 to 100 kcal more energy per kilogram of feed.

Ingredient Sourcing and Quality Control

The quality of your ingredients affects the quality of your feed. Buy from reputable suppliers and check each delivery for signs of spoilage or contamination.

Corn and Grain Quality

Corn should be dry, free of mold, and have no off odors. Moldy corn can contain mycotoxins, especially aflatoxin and fumonisin, which reduce feed intake and egg production. If you suspect mold, have the corn tested for mycotoxins before feeding it.

Test the moisture content of corn before storage. Corn stored above 14 percent moisture can develop mold and lose nutritional value. Store grain in a clean, dry bin and check it regularly for signs of heating or insect infestation.

Soybean Meal Quality

Soybean meal should be uniform in color and texture, with a light tan color and a fresh, nutty odor. Dark, burned soybean meal has been overheated during processing and has reduced protein quality. Soybean meal that smells musty or sour has been stored improperly.

Calcium Sources

Limestone should be white or light gray and free of dirt and clay. Oyster shell should be clean and free of sand and organic matter. Check the particle size distribution regularly, because the mill may change its processing and produce a different particle size.

Vitamin and Mineral Premixes

Store premixes in a cool, dry place and use them before the expiration date. Vitamins degrade over time, especially in hot, humid conditions. Do not buy more premix than you can use in 3 months.

Feed Storage and Handling

Proper feed storage prevents waste and maintains nutrient quality. Store feed in a clean, dry, rodent-proof container. Keep the container covered to prevent moisture pickup and contamination from wild birds.

Do not store feed for more than 2 to 4 weeks, depending on the season. In hot, humid weather, feed can spoil quickly. Buy feed in quantities that you can use before it goes stale.

Clean feeders regularly to prevent the buildup of old feed and mold. Feed that sits in the feeder for more than a day can become contaminated with droppings and bacteria. Hens will pick around stale feed, which reduces their intake of fresh feed.

Economics of Layer Feed Formulation

Feed cost is the largest variable cost in egg production. A well-formulated ration saves money in two ways. First, it reduces waste by providing exactly the nutrients the hens need. Second, it maximizes production, so the feed cost per dozen eggs is lower.

To calculate your feed cost per dozen eggs, multiply the daily feed intake by the cost per kilogram of feed, then divide by the number of eggs produced per day. For example, if feed costs $0.35 per kilogram and the hens eat 110 grams per day, the daily feed cost per hen is $0.039. If the hens produce 0.90 eggs per day, the feed cost per egg is $0.043, or about $0.52 per dozen.

Compare this to the selling price of eggs to determine your margin. If the margin is thin, look for ways to reduce feed cost without reducing production. Options include:

Buying ingredients in bulk
Using locally available grains that are cheaper than corn
Reducing feed waste by improving feeder design
Phase feeding to avoid overfeeding protein in late lay
Negotiating with your feed mill for better prices on volume

Do not sacrifice feed quality to save money. A cheap feed that reduces production by 5 percent is more expensive than a quality feed that maintains production.

Troubleshooting Common Problems

This section covers the most common problems that producers encounter with layer feed and how to diagnose them.

Problem: Egg Production Below Breed Standard

If your flock is producing below the breed standard, check the following in order:

Verify that the ration has the correct protein and amino acid levels. Check the feed tag or have the feed analyzed.
Check feed intake. If the hens are eating less than expected, the nutrient density may be too low.
Check body weight. If the hens are losing weight, they are not getting enough energy.
Check for disease. Respiratory diseases and infectious bronchitis can cause a sudden drop in production.
Check water intake. Hens that do not drink enough will not eat enough.

Problem: Small Eggs

Small eggs are usually caused by insufficient protein or methionine. Check the protein level in the ration and increase it if it is below 17 percent. Add synthetic methionine if the level is below 0.38 percent.

Egg size also increases with the age of the hen and with the number of eggs she has laid. First-cycle hens naturally produce smaller eggs than older hens. If the egg size is increasing gradually, there is no problem.

Problem: Thin-Shelled Eggs

Thin shells are caused by insufficient calcium, insufficient vitamin D, or an imbalance in the calcium to phosphorus ratio. Check the calcium level in the ration and increase it to 4.0 to 4.5 percent. Ensure that at least half of the calcium is in large particle form.

Also check the phosphorus level. Too much phosphorus interferes with calcium absorption. Keep available phosphorus at 0.4 to 0.5 percent.

Heat stress can also cause thin shells. Hens that are panting lose carbon dioxide, which makes the blood more alkaline and reduces calcium availability. If thin shells occur only in hot weather, focus on reducing heat stress.

Problem: Hens Becoming Fat

Fat hens are caused by excess energy intake. Reduce the energy content of the ration by 50 to 100 kcal per kilogram. Also reduce the feeding level if you are feeding ad libitum and the hens are overeating.

Fat hens lay fewer eggs and are more prone to prolapse and heat stress. If you have fat hens, do not try to make them lose weight quickly. A gradual reduction in energy over several weeks is safer.

Problem: Hens Losing Weight

Weight loss is caused by insufficient energy or protein intake. Increase the energy content of the ration or provide more feed. Check for disease, because many diseases reduce feed intake.

In early lay, some weight loss is normal because the hen is mobilizing body reserves to support egg production. However, weight loss should stop after the first few weeks of lay. If hens continue to lose weight, increase the energy level.

Problem: Sudden Drop in Feed Intake

A sudden drop in feed intake is a red flag. Check the following:

Is the feed fresh? Stale or moldy feed will reduce intake.
Has the feed formulation changed? Hens can detect changes in taste and texture.
Is the water supply working? Check drinkers for blockages.
Are the hens healthy? A disease outbreak can cause a rapid drop in feed intake.
Is the temperature too high? Heat stress reduces feed intake.

If you cannot identify the cause within 24 hours, call your veterinarian.

Frequently Asked Questions

How much protein do laying hens need?

Laying hens need about 17 to 18 percent crude protein in their feed during peak production. This provides about 17 to 18 grams of protein per hen per day. In late lay, you can reduce protein to 15 to 16 percent because the hens have lower requirements. The exact level depends on feed intake, which varies with temperature and bird size. What matters most is the daily protein intake, not the percentage in the feed.

Can I feed layer mash instead of pellets?

Yes, you can feed mash, pellets, or crumbles. The nutritional content is the same, but the form affects feed intake. Pellets reduce feed waste because the hens cannot pick out individual ingredients. Mash is cheaper but can be wasteful if the feeders are not adjusted properly. Crumbles are a good middle ground. Choose the form that works best for your equipment and your hens.

What is the best calcium source for laying hens?

The best calcium source is a mix of fine and large particle limestone or oyster shell. The fine particles provide immediate calcium, and the large particles release calcium slowly overnight. Oyster shell is often preferred because it has a more consistent particle size and better calcium availability. Use a product that has at least 50 percent large particles of 2 to 4 millimeters.

How do I know if my feed has enough energy?

The best indicator is body condition. If your hens are maintaining a healthy weight and producing at the expected rate, the energy level is likely correct. If they are gaining too much weight, the energy is too high. If they are losing weight or production is dropping, the energy is too low. You can also have your feed analyzed by a laboratory to measure the metabolizable energy content.

Should I add extra vitamins to my layer feed?

Only if your feed is deficient. A commercial layer premix provides all the vitamins and minerals that hens need. Adding extra vitamins wastes money and can cause problems. For example, too much vitamin D can cause calcium to deposit in soft tissues. Follow the premix manufacturer's recommendation and do not add extra vitamins unless a veterinarian or nutritionist recommends it.

How often should I change my layer feed formulation?

Change the formulation when the flock moves to a new phase, when the temperature changes significantly, or when you see a performance problem. Do not change the formulation just because you found a cheaper ingredient. Hens perform best on a consistent ration. Make changes gradually over 5 to 7 days to avoid a drop in feed intake.

Can I use a broiler grower feed for my laying hens?

No. Broiler feeds are formulated for rapid growth, not egg production. They are too high in energy and too low in calcium for laying hens. Feeding a broiler ration to layers will cause excess fat gain, reduced egg production, and poor shell quality. Always use a feed specifically formulated for laying hens.

What causes a sudden drop in egg production?

A sudden drop in egg production can be caused by a feed problem, a water problem, a disease outbreak, or a management change. Check the feed and water first, because these are the easiest to fix. If the feed and water are fine, look for signs of disease such as respiratory distress, diarrhea, or reduced activity. If the drop is severe or persists for more than a few days, call your veterinarian.

Related Farming Guides

This section will be populated with links to related poultry and livestock farming guides on this site. Check back soon for guides on broiler feed formulation, egg quality management, and poultry health troubleshooting.

Related Clinical & Scientific Guides

References

FAO Poultry Production: https://www.fao.org/poultry-production-products/en/
USDA APHIS Poultry Health: https://www.aphis.usda.gov/livestock-poultry-disease/avian
WOAH Avian Influenza: https://www.woah.org/en/disease/avian-influenza/
FAO Animal Production and Health: https://www.fao.org/animal-production/en/
WOAH (World Organisation for Animal Health): https://www.woah.org/en/home/

This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.