# Broiler Feed Storage: Preventing Spoilage and Nutrient Loss ## Key Takeaways - **Moisture and temperature are primary drivers of feed spoilage:** Elevated moisture content (above 13-14%) initiates mold germination, while temperatures above 75°F (24°C) accelerate chemical degradation, fat oxidation, and biological growth, leading to nutrient loss and mycotoxin production. - **Strict inventory management is critical for nutrient preservation:** Employ a "first-in, first-out" system, using feed within 7-14 days of delivery in warm weather and 14-21 days in cool weather, to mitigate gradual vitamin degradation, fat rancidity, and loss of potency in additives. - **Regular bin inspection and cleaning prevent contamination:** Weekly checks for condensation, bridging, and pest activity, coupled with thorough bin emptying and cleaning every 4-6 weeks or between flocks, are essential to remove old feed residues and prevent mold proliferation. - **Pest exclusion and control are paramount:** Rodents and insects consume and contaminate feed, introduce diseases, and can cause structural damage; sealing entry points, maintaining clean storage areas, and employing targeted trapping or baiting are crucial. - **Mycotoxin exposure necessitates immediate veterinary intervention:** Signs such as reduced feed intake, poor growth, liver damage, or increased mortality warrant prompt feed removal, laboratory analysis, and consultation with a veterinarian to manage flock health impacts. --- Feed is the largest single cost in broiler production, often accounting for 60 to 70 percent of total operating expenses. When feed spoils or loses nutritional value, you do not just waste money on the discarded product. You also lose the growth performance, feed conversion efficiency, and flock uniformity that the ration was designed to deliver. Poor storage can turn a high-quality broiler diet into an expensive source of mold, mycotoxins, and stale nutrients in a matter of weeks. This guide covers the full scope of broiler feed storage, from understanding why feed degrades to selecting bins, managing inventory, cleaning schedules, climate considerations, and monitoring systems. It is written for broiler producers, farm managers, and feed handlers who want practical, field-tested methods for keeping feed fresh, safe, and nutritious from the mill to the feeder line. ## At a Glance | Key Area | Recommended Practice | |---|---| | Feed temperature | Store below 75°F (24°C) when possible | | Moisture content | Keep feed below 12 percent moisture for bagged and bulk feed | | Storage duration | Use feed within 7 to 14 days of delivery in warm weather | | Bin inspection | Check bins weekly for condensation, bridging, and pest activity | | Cleaning schedule | Empty and clean bins every 4 to 6 weeks or between flocks | | First in, first out | Always use oldest feed first, never mix old and new batches | | Mold prevention | Keep feed dry, cool, and away from direct sunlight | | Pest control | Seal entry points, use traps, and inspect for rodents and insects | | Recordkeeping | Log delivery dates, temperatures, and bin cleaning dates | | Emergency threshold | Call a veterinarian if birds show signs of mycotoxin exposure | ## Why Broiler Feed Spoils Feed spoilage is not a single event. It is a process driven by moisture, temperature, oxygen, time, and biological activity. Understanding these drivers helps you target your storage practices where they matter most. ### Moisture Is the Primary Enemy Water drives nearly every spoilage mechanism in poultry feed. Whole grains typically arrive at the mill with moisture content between 12 and 14 percent. After grinding, mixing, and the addition of fats, oils, vitamins, and minerals, the finished feed usually sits at 10 to 12 percent moisture. At these levels, most molds and bacteria remain dormant or grow very slowly. When moisture rises above 13 to 14 percent, mold spores that are always present in feed begin to germinate. Above 16 percent moisture, bacterial growth accelerates rapidly. Condensation is a common culprit. In metal bins, warm daytime temperatures heat the exterior, while cooler nighttime temperatures cause moisture to condense on the bin walls and on the surface of the feed itself. This creates localized wet spots that become breeding grounds for mold. ### Temperature Accelerates Degradation Chemical reactions and biological growth both speed up as temperature rises. For every 10°F (5.5°C) increase in temperature, the rate of many spoilage reactions roughly doubles. Feed stored at 90°F (32°C) will degrade noticeably faster than feed stored at 70°F (21°C). Heat also causes fat oxidation. Broiler diets are energy-dense and often contain added poultry fat or vegetable oil. These fats are susceptible to rancidity, which produces off-flavors, destroys fat-soluble vitamins like vitamins A, D, and E, and reduces the palatability of the feed. Birds that find feed less palatable eat less, and reduced feed intake directly translates to slower growth and poorer feed conversion. ### Oxygen Fuels Oxidation and Aerobic Molds Most molds that affect stored feed are aerobic, meaning they require oxygen to grow. Oxygen also drives the oxidation of fats and certain vitamins. Bulk feed bins are not airtight, so oxygen is constantly available at the surface of the feed and in the spaces between particles. The surface layer of feed in a bin is the most vulnerable. It is exposed to the most oxygen, the most temperature fluctuation, and the most moisture from condensation. This is why caked or crusted feed often forms at the top of a bin, especially in humid conditions. ### Time Compounds Every Problem Even under ideal conditions, feed is a perishable product. Vitamins degrade gradually from the moment the feed is manufactured. Vitamin A and vitamin C are particularly unstable. Enzyme additives and probiotics lose potency over time. The fat component becomes progressively more oxidized. The practical window for using broiler feed depends on the season and the conditions in your storage area. In cool, dry weather, feed may remain acceptable for 2 to 3 weeks. In hot, humid summer conditions, you should aim to use feed within 7 to 10 days of delivery. This is not a fixed rule, but a working guideline that prioritizes bird health and performance. ## Choosing the Right Feed Storage System Your storage system determines how much control you have over the variables that cause spoilage. The two main options are bulk bins and bagged storage. Many operations use both, with bulk feed for the main flock and bagged feed for brooding, medicated rations, or small batches. ### Bulk Feed Bins Bulk bins are the standard for commercial broiler operations. They hold anywhere from 2 to 20 tons of feed and deliver directly into the feeding system through an auger. The main advantages are labor savings, reduced risk of contamination from handling, and better protection from pests and weather. When selecting or evaluating a bulk bin, consider these features: **Material.** Galvanized steel is the most common and is generally adequate. Polyethylene bins resist corrosion and do not condense moisture as readily as metal, but they may not be as durable in extreme weather or with heavy use. Stainless steel is the premium option and is most valuable in humid coastal climates where galvanized steel can corrode. **Ventilation.** A bin needs proper ventilation to allow moisture to escape and to prevent condensation. Look for bins with roof vents that allow air movement while keeping out rain and pests. The vent opening should be screened to block birds, rodents, and insects. **Sealing.** The lid and access hatches must seal tightly. Gaps that allow rain or snow to enter are a common cause of localized spoilage. Check gaskets regularly and replace them when they become brittle or cracked. **Auger and discharge design.** The bottom cone should be steep enough to allow complete emptying. Flat or shallow cones leave a layer of old feed that becomes a permanent source of contamination. The auger system should be cleanable, and the discharge point should be protected from dust and moisture. **Level indicators.** High-level and low-level indicators help you manage inventory without climbing the bin. They also prevent overfilling, which can force moisture into the vent system and damage the bin structure. ### Bagged Feed Storage Bagged feed is common for small flocks, brooding rations, and specialty products. The bags themselves provide some protection, but they are not impermeable. Paper bags allow moisture and oxygen to pass through slowly. Plastic-lined bags offer better protection but can trap moisture if the feed was warm when bagged. Store bagged feed in a dedicated room or shed that is: **Dry.** The floor should be concrete or another surface that does not wick moisture from the ground. Never store bags directly on a dirt floor. Use pallets to keep bags at least 4 to 6 inches off the floor and away from walls. **Cool.** Insulated or shaded storage is best. An uninsulated metal shed in full sun can easily reach 100°F (38°C) inside during summer, which will accelerate rancidity and vitamin loss. **Ventilated.** Air movement helps prevent condensation and keeps mold spores from concentrating. Avoid completely sealed rooms that trap humidity. **Pest-proof.** Rodents can chew through paper bags in a single night. Mice and rats contaminate feed with urine and feces and can transmit diseases to your flock. Seal gaps around doors, windows, and utility penetrations. Stack bags on pallets in a way that allows air circulation. Do not stack bags more than 10 to 12 high, as the weight can crush the bottom bags and create compaction that traps moisture. Use the oldest bags first by rotating stock, and mark delivery dates on each pallet or row. ## Feed Bin Maintenance A feed bin is not a passive container. It is a piece of equipment that requires regular inspection and maintenance to perform its job. Neglected bins cause more feed spoilage than almost any other factor. ### Weekly Inspection Routine Set a specific day each week for bin inspection. This should be a scheduled task, not something you do when you happen to think of it. During the inspection, check: **Exterior condition.** Look for rust, dents, or damage that could compromise the bin. Check that the lid closes and seals properly. Inspect the roof vent for blockages from dust, bird nests, or debris. **Interior condition.** Open the access hatch and look inside. Shine a flashlight across the surface of the feed. Look for discolored patches, crusting, or visible mold. Check the bin walls for condensation or rust streaks. **Feed condition.** Scoop a sample from the surface and from deeper in the bin if possible. Smell the feed. Fresh feed has a pleasant, grainy odor. Sour, musty, or rancid smells are warning signs. Look for clumping, which indicates moisture problems. **Pest activity.** Check for rodent droppings, gnaw marks, or insect activity around the base of the bin and along the auger. Look for signs of birds roosting or nesting on the bin roof. **Auger and discharge.** Run the auger briefly to confirm it operates smoothly. Listen for unusual noises that might indicate a blockage or mechanical problem. Check the discharge area for feed accumulation that could attract pests. ### Monthly Deep Cleaning Once a month, or between flocks, empty the bin completely and clean it thoroughly. This is the only way to remove the layer of old feed and fines that accumulates on the bin walls and in the bottom cone. The cleaning process: 1. Run the auger until no more feed comes out. 2. Open the access hatch and any cleanout ports. 3. Use a brush or broom to sweep the interior walls and cone. Remove all crusted feed and dust. 4. Vacuum or sweep out the fines and debris from the bottom. 5. Inspect the interior for rust, corrosion, or damage. 6. Check that the auger intake is clear and the flighting is not worn. 7. Close all openings and refill with fresh feed. Do not use water to clean a feed bin unless you can dry it completely before refilling. Residual moisture will cause the fresh feed to mold. If you must use water because of a severe mold problem, allow the bin to air dry for 24 to 48 hours with all hatches open before refilling. ### Seasonal Maintenance Different seasons create different challenges for feed storage. Adjust your maintenance schedule accordingly. **Spring and summer.** High temperatures and humidity are the main threats. Check condensation more frequently. Consider insulating metal bins or painting them white to reflect sunlight. Schedule deliveries for cooler times of day and order smaller quantities more frequently. **Fall and winter.** Cold temperatures reduce spoilage rates, but condensation can be worse as bins cycle between warm daytime and freezing nighttime temperatures. Ensure that vents are clear so moisture can escape. Check that lids are not frozen shut, which can prevent proper sealing. **Rainy seasons.** If you are in a region with a distinct rainy season, inspect lids, vents, and seals before the rains begin. Ensure your storage area has good drainage so water does not pool around the base of bins or under bagged feed pallets. ## Managing Feed Inventory The best storage system in the world cannot compensate for poor inventory management. Feed that sits too long will spoil regardless of how well your bins are maintained. ### First In, First Out The first in, first out principle is simple: use the oldest feed before the newest. This requires knowing how old your feed is at all times. Mark delivery dates on bins and bags. When you receive a new delivery, record it in your logbook or phone app immediately. In practice, first in, first out means you should not simply top off a bin when it gets low. If you add new feed on top of old feed, the old feed at the bottom may sit much longer than intended. Instead, run the bin down until it is nearly empty before refilling. This forces you to use the older feed first and gives you a natural opportunity to inspect the bin interior. ### Ordering Quantities Order feed based on your actual consumption rate, not on convenience or bulk pricing. A 10-ton delivery may seem economical, but if it takes you 3 weeks to use it in warm weather, you will likely lose more money to spoilage and reduced performance than you saved on the per-ton price. Calculate your daily feed consumption and order to maintain a 7 to 14 day supply in warm weather and a 14 to 21 day supply in cool weather. This balance keeps feed fresh while providing enough buffer for delivery delays. ### Avoiding Bridging and Blockages Bridging occurs when feed forms a crust or arch above the auger intake, preventing feed from flowing down. This is more common with feeds that contain high levels of fat or molasses, and with feed that has been stored for a while and has settled. To prevent bridging: - Do not overfill bins. Leave headspace at the top. - Use bins with steep cone angles and smooth interior surfaces. - Break up any crusted surface feed promptly. - If a bridge forms, do not poke it from the top while standing on the bin. Use a proper tool from a safe position or call a professional. Bins have claimed the lives of farmers who fell into them while trying to break up bridged feed. ### Blending Old and New Feed Never mix old feed with new feed intentionally. If you have a small amount of old feed left in a bin, remove it and feed it to the birds before adding the new load. If the old feed shows any signs of spoilage, discard it entirely. Mixing spoiled feed with fresh feed contaminates the entire batch and can expose your flock to dangerous levels of mycotoxins. ## Preventing Mold in [Chicken Feed](/knowledge/animal-farming/poultry/chicken-feed-options-types-nutrition-and-feeding-strategies) Mold prevention is the single most important goal of broiler feed storage. Mold not only reduces nutrient content, it produces mycotoxins that can cause serious health problems in broilers. ### How Mold Grows in Feed Mold requires four conditions to grow: moisture, oxygen, a food source, and a suitable temperature. Feed provides the food source and oxygen is almost always available. Your control points are moisture and temperature. The most common molds in poultry feed include species of Aspergillus, Fusarium, and Penicillium. Each has different temperature and moisture preferences, but all are controlled by the same basic principles: keep feed dry and cool. ### Practical Mold Prevention Steps **Control moisture at every point.** Check the moisture content of delivered feed. A simple moisture meter can be used on feed samples. Reject deliveries that are above 13 percent moisture. Ensure that bins and storage areas are dry before feed arrives. **Manage condensation.** Condensation is the hidden cause of many mold problems. In metal bins, condensation forms on the walls when warm, moist air meets cool metal surfaces. Proper ventilation helps, but in humid climates you may need additional measures. Some producers use desiccant packs or moisture-absorbing products in bins, though these must be food-safe and used according to manufacturer instructions. **Keep feed moving.** Feed that sits undisturbed is more likely to develop mold. The surface layer is the most vulnerable. Some producers use a bin vibrator or periodically rotate the surface feed to disrupt mold growth. This is not a substitute for proper moisture control, but it can help in marginal conditions. **Use mold inhibitors when needed.** Commercial mold inhibitors, typically based on organic acids like propionic acid, can be added to feed. These products are most useful in warm, humid conditions or when feed will be stored longer than usual. They are not a replacement for good storage practices. Follow the manufacturer's dosage recommendations and ensure the product is approved for poultry feed. **Discard moldy feed immediately.** If you find mold in a bin, remove the affected feed and clean the bin before adding fresh feed. Do not try to salvage moldy feed by mixing it with fresh feed or by adding mold inhibitors. The mycotoxins produced by mold are heat-stable and will remain in the feed even if the mold itself is killed. ### Recognizing Mycotoxin Problems Mycotoxins are toxic compounds produced by molds. The most important in poultry production are aflatoxins, produced by Aspergillus species, and fumonisins and deoxynivalenol (DON), produced by Fusarium species. Signs of mycotoxin exposure in broilers include: - Reduced feed intake and weight gain - Poor feed conversion - Increased mortality - Liver damage, visible as pale or enlarged livers at processing - Increased susceptibility to disease - Leg problems and lameness - Oral lesions in the mouth and throat - Reduced immune function If you see these signs and suspect mycotoxin contamination, remove the suspect feed immediately and submit a sample to a laboratory for analysis. Work with your feed supplier to identify the source of contamination. A veterinarian can help you assess the health impact on your flock and recommend treatment or supportive care. ## Feed Storage Temperature Management Temperature is the second major control point after moisture. While you cannot control the outdoor temperature, you can manage how much heat reaches your stored feed. ### Understanding Temperature Effects Feed quality declines at every temperature above freezing, but the rate of decline increases sharply above 75°F (24°C). At 90°F (32°C), the rate of vitamin degradation and fat oxidation can be 2 to 3 times faster than at 70°F (21°C). Temperature also affects moisture behavior. Warm feed holds more moisture in the air spaces between particles. When feed cools, that moisture condenses on the feed and on bin walls. This is why feed delivered on a hot day and stored in a cool bin can develop condensation problems within 24 hours. ### Keeping Feed Cool **Shade bins and storage areas.** Position bins so they are shaded during the hottest part of the day. If natural shade is not available, consider a shade structure or a reflective bin cover. White or light-colored bins reflect more solar radiation than dark bins. **Ventilate storage buildings.** If you store bagged feed in a building, ensure it has adequate ventilation. Ridge vents, gable vents, or exhaust fans can help remove hot air that accumulates under the roof. **Time deliveries strategically.** Schedule feed deliveries for early morning or evening when temperatures are cooler. This reduces the temperature spike that occurs when warm feed is loaded into a hot bin. **Consider cool-season storage for long-term needs.** If you need to store feed for more than 2 weeks, do it during cool weather whenever possible. In warm weather, order smaller quantities more frequently. ### Monitoring Feed Temperature You cannot manage what you do not measure. Use a probe thermometer to check feed temperature in bins and bags. Insert the probe into the feed and record the reading. Compare it to the ambient temperature and to the temperature at delivery. A significant difference between the feed temperature and the ambient temperature can indicate a problem. Feed that is warmer than expected may be heating due to microbial activity. Feed that is cooler than expected may have condensation issues. Record feed temperatures in your logbook. Look for patterns over time. If feed temperatures are consistently high in a particular bin, that bin may need insulation, shading, or better ventilation. ## Pest Control in Feed Storage Areas Pests are not just a nuisance. They consume and contaminate feed, introduce diseases, and create conditions that promote spoilage. A comprehensive pest control program is essential for protecting your feed investment. ### Rodent Control Rats and mice are the most destructive pests in feed storage. A single rat can consume 25 to 50 pounds of feed per year and contaminate much more with urine and feces. Rodents also gnaw through bags, bins, and wiring, causing structural damage and fire hazards. **Prevention.** Keep the area around bins and storage buildings clean and free of debris. Mow grass short and remove piles of junk that provide harborage. Seal all openings larger than 1/4 inch in storage buildings. Keep doors closed when not in use. **Exclusion.** Install rodent-proof screens on vents and openings. Use metal flashing or hardware cloth around the base of bins to prevent rodents from climbing. Keep bagged feed on pallets and away from walls so rodents cannot reach it easily. **Trapping and baiting.** Use snap traps and glue boards in areas where rodents are active. Bait stations with rodenticides can be effective but must be placed where birds, pets, and children cannot access them. Rotate bait types to prevent bait shyness. Check traps and bait stations weekly and record activity. ### Insect Control Several insect pests infest stored grain and feed. The most common are grain weevils, flour beetles, and moths. These insects can multiply rapidly in warm conditions and can infest an entire bin if left unchecked. **Prevention.** Keep storage areas clean and free of spilled feed. Clean up spills immediately and dispose of them properly. Do not leave old feed in bins or bags. Inspect incoming feed for signs of insect activity. **Monitoring.** Use pheromone traps or sticky traps to monitor for insect activity. Check traps weekly and record what you find. Early detection allows you to address an infestation before it spreads. **Control.** If you find insects in feed, remove the infested feed and clean the bin thoroughly. Insecticides can be used in empty bins, but they must be approved for use in feed storage areas and applied according to label instructions. Never apply insecticides directly to feed. ### Bird Control Wild birds can contaminate feed with droppings and feathers and can introduce diseases to your flock. They are attracted to spilled feed and to open bins. **Prevention.** Keep bin lids closed and sealed. Clean up spilled feed promptly. Use bird deterrents around storage areas, such as netting, spikes, or visual deterrents. Do not allow wild birds to nest in or near storage buildings. ## Common Feed Storage Mistakes Even experienced producers make storage mistakes. Recognizing these common errors can help you avoid them. ### Topping Off Bins Without Emptying This is the most common mistake. Adding fresh feed on top of old feed means the old feed at the bottom may sit for weeks or months beyond its useful life. The old feed becomes a source of mold, insects, and reduced nutrient content that contaminates the fresh feed above it. ### Ignoring Condensation Many producers notice condensation on bin walls but dismiss it as normal. It is not normal, and it is not harmless. Condensation creates wet spots in the feed that become mold colonies. Address condensation by improving ventilation, insulating bins, and managing the temperature difference between the feed and the bin. ### Storing Feed Too Long Feed is perishable. Even in ideal conditions, it loses nutritional value over time. The vitamins degrade, the fats oxidize, and the palatability declines. Producers who order large quantities to save money often lose more in reduced bird performance than they save on the feed price. ### Using Moldy Feed Some producers try to salvage moldy feed by mixing it with fresh feed, adding mold inhibitors, or feeding it to birds that seem healthy. This is dangerous. Mycotoxins can cause subclinical losses that are not immediately visible, and they can compromise the immune system of the entire flock. ### Neglecting Bin Cleaning A bin that is never cleaned accumulates a layer of old feed and fines on the walls and in the bottom cone. This old feed becomes rancid and moldy and contaminates every new load. Empty and clean bins regularly, even if they appear to be in good condition. ### Poor Recordkeeping Without records, you cannot know how old your feed is, when bins were last cleaned, or what problems have occurred in the past. Good records help you identify patterns and make better management decisions. ### Improper Bag Storage Storing bags on a concrete floor without pallets, stacking bags too high, or leaving bags in an unventilated shed are common mistakes. These practices expose feed to moisture and heat and reduce its shelf life. ## Monitoring and Recordkeeping A formal monitoring and recordkeeping system helps you catch problems early and make better management decisions. It does not need to be complicated. A simple notebook or a spreadsheet on your phone is sufficient. ### What to Record **Feed deliveries.** Record the date, time, quantity, type of feed, and moisture content of each delivery. Note the temperature of the feed at delivery. **Bin conditions.** Record the results of your weekly bin inspections. Note any condensation, crusting, mold, or pest activity. Record the feed temperature in each bin. **Cleaning schedule.** Record when each bin was last emptied and cleaned. Note any repairs or maintenance performed. **Feed usage.** Track how much feed is used each day and how long each batch lasts. This helps you calculate your actual consumption rate and adjust ordering quantities. **Problems and actions.** Record any problems you find and the actions you took. This creates a history that helps you identify recurring issues and evaluate the effectiveness of your solutions. ### Using Records to Improve Review your records monthly. Look for patterns: - Are certain bins more prone to condensation or mold? - Are feed temperatures higher in certain seasons or after certain types of deliveries? - Are pest problems recurring in specific locations? - Is feed lasting longer than it should in certain seasons? Use these patterns to adjust your practices. If a particular bin consistently has condensation problems, invest in insulation or ventilation improvements. If feed is lasting too long in warm weather, reduce your order quantities. ### Feed Sampling and Testing Periodic feed sampling and testing provides objective data on feed quality. You can test for moisture content, mold and yeast counts, and mycotoxin levels. Your feed supplier may offer testing services, or you can use a commercial feed testing laboratory. Sample feed properly to get accurate results. Take samples from multiple locations in the bin or from multiple bags. Combine the samples and submit a representative subsample to the laboratory. Follow the laboratory's instructions for sample size and packaging. Test more frequently when you suspect problems or when conditions are challenging. During hot, humid weather, test every batch. During cool, dry weather, test less frequently. ## Special Storage Considerations for Different Feed Types Not all broiler feeds are the same. Different formulations have different storage requirements. ### Starter Feed Broiler starter feed is high in protein and often contains more expensive ingredients like fish meal or specialized protein sources. These ingredients are more susceptible to oxidation and spoilage. Starter feed should be used within 7 days of delivery in warm weather. ### Grower and Finisher Feed Grower and finisher feeds are lower in protein but higher in energy, often with added fat. The fat content makes them susceptible to rancidity. Check the fat source and the level of added antioxidants. Feed with higher fat levels should be used more quickly. ### Medicated Feed Medicated feeds contain drugs such as anticoccidials or antibiotics. These medications can degrade over time, reducing their effectiveness. Use medicated feed within the time frame recommended by your veterinarian or the feed manufacturer. Do not store medicated feed beyond its labeled use-by date. ### Pelleted Feed Pelleting improves feed efficiency and reduces waste, but it also changes storage characteristics. Pellets are more dense than mash and have less air space between particles. This can reduce oxygen penetration but also makes pellets more susceptible to moisture damage if they get wet. Pelleted feed is more prone to breaking down into fines during handling and storage. Excessive fines reduce feed intake and increase waste. Handle pellets gently and avoid overfilling bins, which can cause crushing. ### Crumbled Feed Crumbles are pellets that have been broken into smaller pieces for young birds. They have more surface area than whole pellets, which makes them more susceptible to moisture absorption and oxidation. Use crumbles quickly and store them in a dry, cool location. ## When to Call a Veterinarian or Extension Agent Most feed storage problems are management issues that you can resolve yourself. However, there are situations where professional help is needed. ### Signs of Mycotoxin Poisoning If your flock shows signs of mycotoxin exposure, such as reduced feed intake, poor growth, increased mortality, or liver problems, contact your veterinarian immediately. Mycotoxin poisoning can be difficult to diagnose because the signs are similar to many other diseases. Your veterinarian can help you rule out other causes and confirm mycotoxin exposure through feed testing and bird examination. ### Unexplained Performance Problems If your birds are not performing as expected and you cannot identify a cause, consult your veterinarian or extension agent. Poor feed quality is one possible cause, but there may be other factors involved. A professional can help you evaluate all aspects of your production system. ### Feed Safety Concerns If you suspect that feed has been contaminated with something other than mold, such as chemicals, pesticides, or foreign objects, contact your feed supplier and your veterinarian immediately. Do not feed suspect feed to your birds. ### Regulatory Questions If you are unsure about regulatory requirements for feed storage, labeling, or mycotoxin testing, contact your state department of agriculture or your extension service. They can provide guidance on compliance and connect you with testing resources. ### Designing a New Storage System If you are building a new facility or upgrading your storage system, consult an agricultural engineer, extension agent, or equipment supplier who specializes in poultry operations. They can help you select the right bins, ventilation systems, and pest control measures for your specific conditions. ## Frequently Asked Questions ### How long can broiler feed be stored before it goes bad? The safe storage time depends on temperature, humidity, and the type of feed. In cool, dry conditions below 75°F (24°C), feed can remain acceptable for 2 to 3 weeks. In hot, humid summer conditions, plan to use feed within 7 to 10 days of delivery. Starter feeds and feeds with high fat content have shorter shelf lives than lower-fat grower or finisher feeds. Always use the oldest feed first and monitor feed condition regularly. ### What are the first signs that chicken feed is spoiling? The earliest signs are subtle changes in smell and appearance. Fresh feed has a pleasant, grainy odor. Spoiling feed develops a sour, musty, or rancid smell. Look for clumping, crusting on the surface, or visible mold growth. Discoloration, especially dark patches, can also indicate spoilage. If you notice any of these signs, remove the affected feed and investigate the cause. ### Can moldy chicken feed make my birds sick? Yes. Moldy feed can contain mycotoxins that cause a range of health problems in broilers, including reduced feed intake, poor growth, liver damage, immune suppression, and increased mortality. Some mycotoxins, like aflatoxins, are potent carcinogens. Do not feed moldy feed to birds, and do not try to salvage it by mixing it with fresh feed. ### Should I use a mold inhibitor in my feed? Mold inhibitors, typically based on organic acids like propionic acid, can be helpful in warm, humid conditions or when feed will be stored longer than usual. They are not a substitute for good storage practices. Use them according to the manufacturer's recommendations and in consultation with your feed supplier or nutritionist. ### How often should I clean my feed bins? Clean bins completely every 4 to 6 weeks, or between flocks, whichever comes first. This removes the layer of old feed and fines that accumulates on bin walls and in the bottom cone. In hot, humid weather, clean more frequently. Always clean bins before adding a new load of feed. ### What is the ideal moisture content for stored broiler feed? Finished broiler feed should have a moisture content below 12 percent. Feed above 13 percent moisture is at high risk for mold growth and should be rejected or used immediately. Use a moisture meter to check delivered feed and record the readings. ### How can I keep feed cool in the summer? Position bins in shaded areas or use reflective covers. Paint metal bins white to reflect solar radiation. Ensure adequate ventilation in storage buildings. Schedule deliveries for cooler times of day. Order smaller quantities more frequently so feed does not sit as long. Consider using a bin temperature monitor to track conditions. ### What should I do if I find mold in my feed bin? Remove all affected feed immediately and dispose of it properly. Clean the bin thoroughly, removing all crusted feed and debris from the walls and cone. Allow the bin to dry completely before refilling. Inspect the bin for the cause of the moisture problem, such as condensation, leaks, or poor ventilation, and correct it before adding fresh feed. ## Related Farming Guides This section will be populated with links to related farming guides on poultry production, feed management, and flock health. Check back for updates or explore other resources in the poultry category. ## Related Clinical & Scientific Guides * [Poultry Farm Fencing: Materials, Design, and Predator Exclusion](/knowledge/animal-farming/poultry/poultry-farm-fencing-materials-design-predator-exclusion) * [Broiler House Wind Speed and Airflow Measurement](/knowledge/animal-farming/poultry/broiler-house-wind-speed-airflow-measurement) * [Broiler House Heating Systems: Types and Efficiency](/knowledge/animal-farming/poultry/broiler-house-heating-systems-types-efficiency) ## 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](/knowledge/bacteria/avian-bacteria/avian-influenza-cdc-global-surveillance): 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.