Calf Bedding Management: Types, Depth, and Moisture Control

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

Key Takeaways

• Bedding Material Selection: Long straw, particularly wheat straw, offers superior insulation and absorbency for winter, while kiln-dried wood shavings are a suitable alternative for warmer months due to better surface dryness and ease of handling in manure systems. Black walnut shavings must be avoided due to toxicity.
• Depth and Insulation: Minimum settled bedding depth of 6 inches is required, increasing to 8-12 inches in unheated housing during winter to provide essential thermal insulation against cold floors. The "nesting test" (calves nesting into bedding with legs partially hidden) is a practical indicator of adequate depth and comfort.
• Moisture Control is Paramount: Urine, manure, spilled water, and condensation are primary moisture sources. Daily removal of wet spots and manure, followed by adding fresh bedding to maintain depth, is critical. The "knee test" (bedding remaining dry to the knee after 30 seconds of kneeling) serves as a direct, objective measure of surface dryness.
• Ventilation's Critical Role: Effective ventilation is inseparable from bedding management, preventing moisture buildup from calf respiration and condensation. Continuous, gentle air exchange is necessary to remove humidity without creating drafts, mitigating risks of pneumonia and keeping bedding dry.
• Routine Management and Disease Prevention: Consistent daily maintenance, including removing soiled bedding and adding fresh material, is foundational. Complete pen stripping and disinfection between calves are essential disease control measures, preventing pathogen transmission and reducing the incidence of scours and respiratory infections.

Raising healthy calves starts with the ground beneath their feet. The bedding you choose, how deep you lay it, and how well you manage its moisture directly affect calf health, growth rates, and your labor costs. This guide covers the main types of calf bedding, recommended depths for different seasons and housing systems, and practical methods for keeping bedding dry. It is written for dairy producers, calf raisers, farm employees, and agricultural students who want a clear, actionable reference for improving their calf bedding program.

At a Glance

• Best overall bedding: Long straw offers the best combination of warmth, absorbency, and calf comfort when kept dry.
• Best alternative: Kiln-dried wood shavings work well in warmer months but provide less insulation than straw in deep winter.
• Minimum depth: Deep-bedded calves need at least 6 inches of settled bedding in winter, with 8 to 12 inches preferred in unheated housing.
• Moisture test: Bedding should feel dry to the knee. If moisture soaks through your pants within 30 seconds of kneeling, add fresh bedding.
• Straw vs shavings: Straw is warmer and more absorbent per pound, but shavings are easier to keep clean on the surface and work better with manure removal systems.
• Daily maintenance: Remove wet spots and manure at least once daily, then add fresh bedding to restore depth.
• Ventilation matters: Even the best bedding fails in a damp, poorly ventilated barn. Air exchange is part of moisture control.
• Watch for signs: Coughing, nasal discharge, dirty navels, and calves that shiver all point to bedding problems.

Why Calf Bedding Matters

Calves are born with very little body fat and no ability to shiver effectively for the first few days of life. They rely on their environment to help maintain body temperature. Bedding is the primary barrier between a calf and the cold, damp floor. When bedding fails, calves lose body heat rapidly, which forces them to burn energy that should go toward growth and immune function.

The relationship between bedding and calf health is direct. Calves that lie on wet, dirty bedding are exposed to higher levels of bacteria and ammonia fumes. These conditions increase the risk of pneumonia, scours, and navel infections. The National Mastitis Council emphasizes that clean, dry environments are foundational to preventing disease in young stock, just as they are for lactating cows. A calf that stands more because its bedding is wet or uncomfortable is a calf that is burning energy and increasing its risk of respiratory disease from poor air quality.

Bedding also affects how much time calves spend lying down. Calves are ruminating animals in training. They need to lie down to rest and to develop their rumens properly. Uncomfortable bedding reduces lying time, which can slow rumen development and reduce starter intake. The economic impact is simple: healthier calves grow faster, eat more starter, and transition to group housing more smoothly.

Understanding the Causes of Bedding Failure

Before you can fix a bedding problem, you need to understand why bedding fails. The main culprits are moisture, compaction, and inadequate depth. Each one feeds the others.

Moisture Sources

Moisture enters bedding from several sources. Urine and manure are the obvious ones. A calf produces a significant amount of urine each day, and that liquid has nowhere to go except into the bedding or out through drainage. In deep-bedded systems, urine can pool at the bottom of the bedding pack if the base is not absorbent enough.

Spilled water from buckets and automatic waterers adds moisture that many producers overlook. A calf that plays in its water bucket or tips it over can saturate a large area of bedding in minutes. Waterers that leak or overflow create chronic wet spots that never dry out.

Condensation is a hidden source of moisture in poorly ventilated barns. Warm, humid air from calf breath and respiration hits cold surfaces like walls, windows, and ceilings, then condenses into water droplets. These droplets drip onto bedding and keep it perpetually damp. This is why ventilation is inseparable from bedding management. You can add all the fresh straw you want, but if condensation keeps dripping from the ceiling, the bedding will stay wet.

Compaction and Matting

Straw and shavings both compress under the weight of a lying calf. Over time, the bottom layers of bedding pack down into a dense mat that holds moisture and blocks airflow. A compacted bedding base stops draining and becomes a reservoir of ammonia and bacteria. This is why simply adding fresh bedding on top of an old, wet pack is not enough. You have to remove the wet material down to a dry base periodically.

Inadequate Depth

Thin bedding fails for two reasons. First, it does not provide enough insulation between the calf and the cold floor. Concrete and dirt floors conduct heat away from the calf rapidly. Second, thin bedding becomes saturated quickly. A 2-inch layer of straw can absorb only so much urine before it is soaked through. Once the bedding is wet, the calf is lying on a cold, damp surface no matter how much fresh straw you sprinkle on top.

Calf Bedding Types Compared

Choosing the right bedding material is the first major decision. Each option has strengths and weaknesses, and the best choice depends on your climate, housing system, and what is available locally at a reasonable price.

Straw

Long straw, typically from wheat, barley, or oats, is the traditional gold standard for calf bedding. It has excellent insulating properties because the hollow stems trap air. This trapped air creates a thermal barrier between the calf and the floor. Straw is also highly absorbent, capable of soaking up several times its own weight in moisture.

Wheat straw is usually the best choice because it is soft, absorbent, and less likely to harbor molds than some other types. Barley straw is similar but can be slightly coarser. Oat straw is soft and palatable if calves decide to eat it, but it is less absorbent than wheat straw and breaks down faster.

The main drawback of straw is that it needs frequent topping up. It compacts quickly under calves, especially in wet conditions. Straw also can be dusty if it was harvested in dry conditions, which can irritate calf respiratory tracts. Chopped straw is easier to handle and spreads more evenly, but it absorbs less moisture than long straw because the cut ends allow water to pass through faster.

Wood Shavings

Kiln-dried wood shavings are the most common alternative to straw, especially in warmer climates or in barns with flush systems. Shavings are highly absorbent and dry quickly on the surface. They also stay fluffier than straw, which means calves can nest into them more easily.

The major weakness of shavings is insulation. Wood shavings do not trap air as effectively as straw, so they provide less warmth in deep winter. In unheated barns during cold weather, calves on shavings may need extra bedding depth or a supplemental heat source. Shavings also break down faster than straw when saturated, turning into a dark, wet mass that is difficult to remove.

Do not use shavings from black walnut trees. Black walnut shavings contain a toxin that can cause leg swelling, laminitis, and even death in calves. If you buy shavings from a sawmill, ask about the source species. Pine and spruce shavings are generally safe and commonly used.

Sawdust

Sawdust is finer than shavings and packs down more densely. This makes it less desirable as a top layer because it holds moisture closer to the surface and can cake. Sawdust works better as a base layer under straw or shavings, where it absorbs moisture and provides a cushion. Some producers use sawdust in warm weather when calves are not under cold stress.

The fine particles in sawdust can be dusty, which is a concern in enclosed barns. If you use sawdust, look for material with larger particles and minimal fine dust.

Sand

Sand is used in some calf operations, particularly in warm climates or for calves housed on slatted floors. Sand does not absorb moisture, but it drains well and stays cool in summer. It also does not support bacterial growth as readily as organic bedding materials.

Sand has significant drawbacks. It is heavy to handle, abrasive to equipment, and can cause digestive issues if calves consume it. Sand also holds cold temperatures, making it a poor choice for winter housing. Most dairy producers reserve sand for mature cow freestalls rather than calf pens.

Shredded Paper

Shredded paper is an inexpensive bedding option in areas where waste paper is available. It is absorbent and provides decent insulation. The main concerns are dust, ink residues, and the fact that paper mats down quickly when wet. Shredded paper also blows around in breezy conditions and can be difficult to contain in outdoor pens.

Hemp and Other Plant Fibers

Hemp bedding has gained popularity in some regions. It is highly absorbent, often outperforming straw and shavings, and it breaks down into a compostable material. Hemp is more expensive than traditional options in most areas, but its absorbency means you may use less over time. Flax straw and miscanthus are similar alternative fibers that are available in some regions.

Choosing Based on Your Situation

The right bedding choice depends on several factors. In cold climates with unheated barns, straw is hard to beat for warmth. In warm climates or summer months, shavings or sand may work better because they do not hold as much heat. If you have a manure handling system that relies on flushing, shavings and sawdust are easier to manage than long straw, which can clog pumps and channels.

Cost is always a factor, but price per bale is not the whole picture. A cheaper bedding that needs frequent replacement can cost more than a premium option that lasts longer. Track your bedding usage per calf per month to compare true costs.

Calf Bedding Depth Requirements

Depth is not a one-size-fits-all number. It depends on temperature, housing type, and the bedding material you use. The goal is to provide enough insulation and absorbency that the calf stays warm and dry, and that the bedding stays dry between cleanings.

Winter Depth in Unheated Housing

In unheated barns during cold weather, deep bedding is essential. Calves lose heat through the floor faster than through the air, so the bedding layer must be thick enough to insulate. A settled depth of at least 6 inches is the minimum, with 8 to 12 inches recommended for calves under 3 weeks old or during severe cold snaps.

The key word is settled. Fresh straw fluffs up and looks deep, but it compresses quickly under a calf. When you measure depth, press down as a calf would and measure the compressed layer. If you are using straw, plan to add fresh material every day or two to maintain the settled depth.

Summer Depth

In warm weather, deep bedding is less critical for insulation, but it still matters for absorbency and comfort. A settled depth of 4 to 6 inches is usually adequate. The main goal is to keep the surface dry and give calves a comfortable place to lie. In hot weather, some producers reduce bedding depth to encourage calves to lie on a cooler surface, but this must be balanced against the need for a clean, dry area.

The Nesting Test

A practical way to check if bedding depth is adequate in cold weather is the nesting test. Place a calf in freshly bedded pen and observe how it lies down and rests. A calf that can nestle down into the bedding so that its legs are partially hidden and its body is surrounded by bedding has enough depth. A calf that lies flat on top of the bedding with legs exposed is not getting enough insulation.

This test is especially useful for evaluating straw bedding. Calves instinctively nest into straw when they are comfortable. If they do not nest, the bedding is too thin or too compacted.

Hover and Heat Lamp Considerations

If you use hovers or heat lamps in calf pens, you can reduce bedding depth slightly because the calf has an additional heat source. However, do not reduce depth below the absorbency requirement. A hover keeps the calf warm from above, but it does nothing to keep moisture away from the calf below. Always maintain at least 4 to 6 inches of settled bedding even with supplemental heat.

Moisture Control Methods

Keeping bedding dry is the most important daily task in calf care. Wet bedding is not just uncomfortable, it is a direct threat to calf health. Here are the practical methods that work on real farms.

Daily Removal of Wet Spots

The foundation of moisture control is removing soiled bedding every day. Walk through calf pens at least once daily, ideally twice, and remove manure and wet bedding with a fork or shovel. Pay special attention to the area near the rear of the calf where urine and manure accumulate. Remove this material down to the dry base and replace it with fresh bedding.

Do not try to save time by leaving wet spots in place and covering them with fresh straw. This creates a layered effect where moisture is trapped between layers of bedding. The calf will eventually break through the fresh layer and lie on the wet mat underneath. The ammonia smell in the pen is a clear sign that this is happening.

Adding Fresh Bedding

After removing wet spots, add fresh bedding to restore depth. The amount you add depends on the season and how much you removed. In winter, you may need to add a generous layer daily to maintain the 8 to 12 inch settled depth. In summer, smaller additions every few days may be enough.

When adding fresh bedding, fluff it up rather than dumping it in a pile. Spread it evenly across the pen so the calf has a consistent surface. Pay extra attention to the lying area, which is where the calf spends most of its time.

The Knee Test

A simple field test helps you judge when bedding needs attention. Kneel on the bedding with both knees and stay there for 30 seconds. If moisture soaks through your pants, the bedding is too wet and needs more fresh material. This test works because a calf lying on bedding creates similar pressure to a kneeling person. If the bedding cannot keep a kneeling adult dry, it cannot keep a calf dry either.

Some producers use a variation where they press a paper towel into the bedding and check for moisture transfer. Either method works. The point is to have a consistent, objective way to evaluate bedding moisture rather than relying on visual inspection alone.

Managing Water Sources

Water spills are a major source of bedding moisture that is easy to overlook. Check water buckets and automatic waterers daily for leaks and overflow. Position water sources away from the main lying area so that spills drain to a less critical part of the pen. If you use buckets, consider using buckets with weighted bottoms or holders that prevent tipping.

In cold weather, check water sources frequently for freezing and thawing cycles that can cause leaks. A waterer that drips constantly can saturate a large area of bedding overnight.

Ventilation and Air Movement

Ventilation is the invisible partner of bedding management. Even the most absorbent bedding will fail if the air above it is saturated with moisture. Calves exhale a large amount of moisture into the air. In a poorly ventilated barn, this moisture has nowhere to go, so it condenses on cold surfaces and drips back onto the bedding.

Aim for continuous, gentle air movement through calf housing. In cold weather, you still need ventilation to remove moisture, but you must avoid drafts on the calves. Positive pressure ventilation systems and ridge vents are common solutions. The goal is to exchange the air without creating a direct draft on the calves.

Monitor humidity in the barn. If you see condensation on windows, walls, or ceilings, you need more ventilation. If calves are coughing and bedding stays wet despite frequent additions, poor air exchange is likely the cause.

Complete Pen Stripping

No amount of daily maintenance can keep bedding fresh forever. Eventually, the entire pen needs to be stripped and reset. The frequency depends on your system, but most calf pens should be completely cleaned between calves. This means removing all bedding, washing and disinfecting the pen, allowing it to dry, and then adding a fresh, deep layer of clean bedding.

For group housing, pen cleaning is needed more frequently. Some operations strip group pens every 2 to 4 weeks, depending on stocking density and bedding type. Watch for signs that a pen needs a complete reset: persistent ammonia smell, bedding that stays wet despite daily additions, or an increasing number of calves with respiratory issues.

Using Lime or Absorbent Products

Some producers use hydrated lime or commercial absorbent products under bedding to help control moisture and bacteria. Lime can help dry out wet spots and raise the pH of the bedding surface, which inhibits bacterial growth. However, lime must be used carefully. It is caustic and can cause skin burns if calves lie directly on it. Always cover lime with a layer of bedding.

Commercial absorbent products are available, but they add cost. Most well-managed operations can achieve dryness with regular bedding additions and good ventilation without these products. If you are considering an absorbent additive, first evaluate whether your base bedding program is sound.

Step-by-Step Bedding Management Routine

A consistent daily routine is the key to successful bedding management. Here is a practical sequence that works across most calf housing systems.

Morning Check

Start each day by walking through all calf pens before feeding. Look for calves that are shivering, coughing, or showing signs of nasal discharge. These can be early signs of cold stress or respiratory disease linked to poor bedding. Check the bedding condition in each pen. Note which pens need attention.

Remove Soiled Bedding

After feeding, remove soiled bedding from each pen. Work from the cleanest area to the dirtiest to avoid spreading contamination. Remove manure and wet bedding down to the dry base. Pay special attention to the rear of the pen and any area where the calf has been lying.

Add Fresh Bedding

Add fresh bedding to restore depth and provide a clean surface. In winter, add enough to maintain the recommended settled depth. In summer, a lighter application is usually sufficient. Fluff the bedding and spread it evenly.

Check Water Sources

Inspect all water buckets and waterers. Refill or replace as needed. Check for leaks and spills. Position water sources to minimize the chance of bedding contamination.

Afternoon Walk-Through

In the afternoon or evening, do a second walk-through of calf pens. Remove any new manure or wet spots and add small amounts of fresh bedding where needed. This second check is especially important in winter when calves spend more time lying down and produce more moisture in the bedding.

Weekly Deep Clean

Once a week, do a more thorough cleaning of each pen. Remove all bedding from the pen, sweep the floor, and inspect for drainage issues. In pens between calves, wash and disinfect the floor and walls. Allow the pen to dry completely before adding fresh bedding.

Monthly Evaluation

Once a month, evaluate your overall bedding program. Track how much bedding you are using per calf. Look for patterns in calf health, especially respiratory issues or scours. Check for areas of the barn where bedding stays wet despite good management. This monthly review helps you catch problems before they become costly.

Common Bedding Mistakes and How to Avoid Them

Even experienced producers make bedding mistakes. Here are the most common problems and practical fixes.

Topping Up Without Removing Wet Bedding

The most common mistake is adding fresh bedding on top of wet bedding without removing the wet material first. This creates a false sense of cleanliness. The calf lies on a thin layer of fresh straw that quickly becomes saturated from the wet layer underneath. The result is a calf that is effectively lying on wet bedding no matter how much fresh material you add.

Fix this by always removing wet spots before adding fresh bedding. If you find yourself adding more than a few inches of fresh bedding without removing any old material, you are likely building up a wet pack that will need to be stripped soon.

Using Too Little Bedding to Save Money

Bedding is a visible cost, and it is tempting to stretch each bale further. But skimpy bedding costs more in the long run. Calves on thin bedding get cold, use energy for warmth instead of growth, and are more likely to get sick. The veterinary bills and reduced growth rates far outweigh the savings on bedding.

Fix this by calculating the true cost of inadequate bedding. Track growth rates and health events in relation to bedding use. Most producers find that generous bedding pays for itself through healthier, faster-growing calves.

Ignoring Ventilation Problems

Some producers focus entirely on bedding and ignore the air quality in the barn. Even perfect bedding will fail in a damp, stuffy barn. Condensation from poor ventilation keeps bedding wet no matter how often you change it.

Fix this by checking ventilation regularly. Look for condensation on surfaces, smell for ammonia, and watch for signs of respiratory irritation in calves. If you see these signs, improve air exchange before spending more on bedding.

Forgetting to Strip Pens Between Calves

In continuous flow systems, it is tempting to add fresh bedding and move the next calf in without a complete pen cleaning. This is a major disease risk. The old bedding contains bacteria and pathogens that can infect the next calf.

Fix this by always stripping and disinfecting pens between calves. This is non-negotiable for disease control. The extra hour of labor is far cheaper than treating a sick calf.

Using the Wrong Bedding for the Season

Some producers use the same bedding year-round without adjusting for temperature. Straw that is ideal for winter may be too warm and dusty in summer. Shavings that work well in summer may not provide enough insulation in deep winter.

Fix this by adjusting your bedding program seasonally. Use deeper, more insulating bedding in winter and switch to lighter, more breathable options in summer.

Monitoring and Recordkeeping

You cannot manage what you do not measure. A simple recordkeeping system helps you track bedding use, calf health, and the effectiveness of your program.

Track Bedding Usage

Record how much bedding you use per pen per week. This helps you budget and also flags problems. A sudden increase in bedding use may indicate a ventilation problem or a change in bedding quality. A decrease may mean you are not maintaining adequate depth.

Track Calf Health

Keep simple health records for each calf, noting any respiratory issues, scours, or other illnesses. Over time, you will see patterns. If calves in one area of the barn have more respiratory problems, that area may have a bedding or ventilation issue.

Track Environmental Conditions

Note the temperature and weather conditions in your records. This helps you adjust bedding depth and frequency of additions. If you know a cold snap is coming, you can add extra bedding in advance.

Use a Simple Scoring System

Some operations use a bedding score system, rating pens on a scale of 1 to 5 for dryness and cleanliness. A score of 5 is dry and clean, while a score of 1 is wet and dirty. Walk through pens daily and assign a score. This gives you a quantifiable measure of your bedding program and helps you identify pens that need attention.

Review Monthly

Once a month, review your records. Look for trends in bedding use, calf health, and environmental conditions. Ask yourself what is working and what needs adjustment. This review is the foundation of continuous improvement.

When to Call a Veterinarian or Extension Agent

Most bedding problems are management issues that you can solve on your own. However, there are times when professional help is warranted.

Call a Veterinarian When

Call your veterinarian if you see a cluster of health problems that may be linked to bedding. This includes multiple calves with pneumonia, scours, or navel infections within a short period. A veterinarian can help you diagnose the cause and recommend treatment and prevention strategies.

Also call a veterinarian if a calf shows severe symptoms such as difficulty breathing, severe diarrhea with dehydration, or signs of septicemia. These are emergencies that require immediate professional attention.

Call an Extension Agent When

Your local agricultural extension agent is a valuable resource for bedding management questions. Call an extension agent if you are considering a major change to your bedding system, such as switching from straw to shavings, building new calf housing, or installing a ventilation system. Extension agents can provide research-based recommendations and may connect you with other producers who have tried similar systems.

Extension agents can also help with bedding cost analysis and can sometimes point you to local sources of affordable bedding materials.

When You Have a Persistent Problem

If you have been managing bedding carefully but calves still have health problems, or if bedding stays wet despite your best efforts, it is time to get an outside perspective. A veterinarian or extension agent can evaluate your facilities and practices and identify issues you may have missed.

Frequently Asked Questions

How often should I add fresh bedding to calf pens?

In most operations, you should add fresh bedding daily after removing soiled material. In winter, calves need more bedding to maintain depth and insulation, so you may need to add a generous layer each day. In summer, you may be able to add smaller amounts every 2 to 3 days. The key is to maintain the recommended settled depth and keep the surface dry. Use the knee test to check moisture, and add fresh bedding whenever the surface starts to feel damp.

Is straw or wood shavings better for calves?

Straw is generally better for winter because it provides more insulation and traps more air. It is also more absorbent per pound. Wood shavings work well in warmer months and are easier to keep clean on the surface. They also handle manure removal systems better. The best choice depends on your climate, housing, and budget. Many producers use straw in winter and switch to shavings in summer.

How deep should bedding be for calves?

In unheated housing during winter, bedding should be at least 6 inches deep after settling, with 8 to 12 inches preferred. In summer, 4 to 6 inches is usually adequate. Use the nesting test to check if calves are able to nestle into the bedding. If they lie flat on top, the bedding is too thin.

How can I tell if bedding is too wet?

Use the knee test. Kneel on the bedding for 30 seconds. If moisture soaks through your pants, the bedding is too wet. You should also watch for signs in the calves themselves. Calves that are shivering, have dirty flanks, or develop respiratory issues may be on wet bedding. A strong ammonia smell in the pen is another clear sign of moisture problems.

Can I use sand for calf bedding?

Sand can work in warm climates or in specific housing systems, but it has significant drawbacks for calves. It does not provide insulation in cold weather, it is heavy to handle, and calves may ingest it, which can cause digestive problems. Most dairy producers reserve sand for mature cows and use organic bedding for calves.

How often should I completely clean calf pens?

Calf pens should be completely stripped, washed, and disinfected between calves. This is essential for disease control. In group housing, pens should be completely cleaned every 2 to 4 weeks, depending on stocking density and bedding type. Even with daily removal of wet spots, you cannot maintain a clean environment indefinitely without a complete reset.

What is the best way to reduce bedding costs?

The best way to reduce bedding costs is to use bedding efficiently, not to use less bedding. Remove wet spots daily so you are not adding fresh bedding on top of wet material. Store bedding properly to prevent spoilage. Buy in bulk when prices are favorable. Consider alternative bedding materials that are available locally at lower cost. Track your bedding use per calf to identify waste.

How does ventilation affect bedding moisture?

Ventilation is critical to bedding management. Calves exhale a large amount of moisture, and if the air in the barn is not exchanged, this moisture condenses on cold surfaces and drips onto bedding. Poor ventilation keeps bedding wet no matter how often you change it. Aim for continuous, gentle air movement that removes moisture without creating drafts on the calves.

Related Farming Guides

This section will be populated with links to related farming guides covering calf housing, dairy herd health, and young stock management.

Related Clinical & Scientific Guides

• Evaluating Feed Additives for Dairy Cow Performance
• Dairy Barn Fire Safety: Design and Prevention Measures
• Dairy Cow Pregnancy Loss Records and Review

References

• National Mastitis Council: https://www.nmconline.org/
• USDA APHIS Dairy Cattle Health: https://www.aphis.usda.gov/livestock-poultry-disease/cattle
• FAO Dairy Production and Products: https://www.fao.org/dairy-production-products/en/
• 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.