Pasture-Based Feed Budgeting for Beef Cattle

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

Key Takeaways

• Pasture feed budgeting quantifies available forage (using methods like pasture sticks, rising plate meters, or clip-and-weigh) and matches it against calculated daily herd demand (based on Animal Units, where 1 AU = 1000 lb cow consuming ~26 lbs dry matter/day) to determine grazing days.
• Effective stocking rates are determined by a land's annual forage production (e.g., 2-4 tons dry matter/acre for well-managed cool-season pastures in the Eastern US) and the herd's annual demand, not desired herd size.
• Rotational grazing requires calculating paddock size based on herd daily demand and available grazeable forage per acre, aiming for a utilization rate of 50-60% and leaving residual stubble (3-4 inches for cool-season, 4-6 inches for warm-season grasses) to ensure regrowth.
• A feed budget acts as an early warning system, prompting actions like hay supplementation or herd reduction when projected grazing days fall below anticipated forage growth periods (e.g., spring flush vs. summer slump).
• Consistent weekly monitoring of pasture height, applying a utilization factor (50-60%), and maintaining detailed grazing records are critical to prevent overgrazing, manage forage quality, and adapt to variable weather conditions.

Pasture feed budgeting for beef cattle is the practice of matching the amount of forage available in your paddocks to the amount your herd needs to eat each day. This guide explains how to measure pasture, calculate daily forage demand, set stocking rates, and build a rotational grazing plan that keeps both your cattle and your grass healthy. It is written for beef producers who graze pasture as a primary feed source, whether you manage a small cow-calf operation or a larger stocker enterprise. You will learn a practical system you can start using this week, not a theoretical model.

At a Glance

• A pasture feed budget is a simple equation: available forage divided by daily herd demand equals days of grazing.
• One animal unit (AU) equals one 1,000 pound cow with or without a calf. A cow this size eats about 26 pounds of dry matter per day.
• Use pasture sticks, rising plate meters, or simple clip and weigh samples to estimate available forage. Pick one method and use it consistently.
• Set your stocking rate based on the amount of forage you can grow, not the amount you want to grow. Use your county's average rainfall and soil type as a starting point.
• Rotational grazing works best when you move cattle based on pasture measurements, not on a fixed calendar schedule.
• Keep a grazing record for each paddock. Record entry date, exit date, estimated forage before and after grazing, and any problems you see.
• Leave at least 3 to 4 inches of residual stubble on cool season grasses and 4 to 6 inches on warm season grasses. Grazing below these levels reduces regrowth and stresses the stand.
• A feed budget is a living document. Check it weekly and adjust whenever pasture growth changes with the weather.

Why Pasture Feed Budgeting Matters

Most beef producers do not fail because their cattle are poor performers. They fail because the pasture runs out before the season does. A feed budget is your early warning system. It tells you weeks in advance that you are running short, which gives you time to buy hay, sell some stock, or move cattle to another field.

Grazing too early in the spring damages the grass crown and delays regrowth. Grazing too late in the fall leaves too little cover for winter survival. Grazing too heavily at any time reduces root mass, lowers future production, and invites weeds. A feed budget helps you avoid all three problems because it forces you to look at the pasture as a crop that needs management, not as free forage that will always be there.

Feed budgeting also saves money. Hay is expensive to buy and expensive to make. Every day your cattle can graze standing forage instead of eating from a bale is a day you save on fuel, equipment, storage, and labor. Producers who use a written feed budget typically extend their grazing season by 30 to 60 days per year compared to producers who guess. Over a 100 cow herd, that can mean thousands of dollars in avoided hay costs.

The process is not complicated. You need to know three numbers: how much forage you have, how much your cattle need, and how fast the forage is growing. Once you have those numbers, you can make informed decisions about stocking rate, paddock moves, and when to supplement.

Understanding the Basic Units

Before you can budget feed, you need a common unit of measure. The beef industry uses the animal unit, or AU, as that standard. One animal unit equals one mature cow weighing 1,000 pounds, with or without a calf up to weaning age. This cow consumes about 26 pounds of dry matter per day, which is roughly 2.6 percent of her body weight.

You can convert any animal to animal units using a simple formula. Divide the animal's weight by 1,000, then multiply by 1.0 for a mature cow. For growing animals, use a conversion factor from the table below.

To budget for a mixed herd, add up the animal unit equivalents for every animal in the group. For example, a group with 20 cows with calves, 1 bull, and 10 yearling steers would be 20 AU plus 1.5 AU plus 7 AU, for a total of 28.5 AU.

This group would need 28.5 AU times 26 pounds per day, which equals 741 pounds of dry matter per day. That is your daily herd demand. You will use this number throughout the budgeting process.

Estimating Available Forage

You cannot budget what you cannot measure. Estimating pasture yield is the first practical step, and you have several options. Choose one method and stick with it so your numbers are comparable over time.

The Pasture Stick Method

A pasture stick is a simple measuring tool available from most extension offices or online suppliers. It costs about ten dollars and fits in your pocket. The stick has markings that convert grass height to pounds of dry matter per acre for different forage types.

To use it, walk a zigzag pattern across the paddock and take 20 to 30 height readings. Do not just measure the tallest grass. Measure at the actual height where cattle would graze, which means avoiding areas around manure pats, old grazing spots, and fence lines. Record each reading, then average them.

The pasture stick has separate scales for different forage types. Cool season grasses like fescue and orchardgrass have one scale. Warm season grasses like bermudagrass have another. Legumes like clover and alfalfa have a third. Use the correct scale for your pasture. If you have a mixed stand, use the scale for the dominant grass and adjust slightly downward.

The stick gives you a rough estimate, not a precise measurement. It is accurate enough for budgeting purposes if you use it consistently. The key is to take readings the same way every time so you can compare one week to the next.

The Rising Plate Meter

A rising plate meter is more accurate than a pasture stick. It measures the height of the compressed sward, which correlates well with forage mass. The meter has a metal plate that rests on the grass and a counter that records the height. You press the plate down, read the number, and record it.

Rising plate meters cost between 300 and 800 dollars. They are a reasonable investment for producers managing more than 100 acres of pasture. The measurement process is the same as the pasture stick. Take 20 to 30 readings in a zigzag pattern, average them, and convert to pounds of dry matter per acre using the calibration chart that comes with the meter.

The main advantage of a rising plate meter is consistency. It removes the human error that comes with judging height by eye. The main disadvantage is cost. If you are just starting with feed budgeting, a pasture stick will serve you well.

The Clip and Weigh Method

The most accurate method is clipping and weighing. This method requires more labor but gives you a true measurement of what is in the paddock.

To clip and weigh, you need a metal frame that encloses a known area. A common size is 1 square foot, but you can use any frame with a known area. Place the frame in a representative spot, clip all the forage inside it down to grazing height, and put it in a paper bag. Repeat this in 5 to 10 locations across the paddock.

Dry the samples in a microwave or oven until they stop losing weight. Weigh the dry sample, then convert to pounds per acre. If your frame is 1 square foot, multiply the dry weight in grams by 43.56 to get pounds per acre. This calculation works because there are 43,560 square feet in an acre.

For example, if your 1 square foot sample weighs 10 grams dry, the pasture has about 435 pounds of dry matter per acre. That is a very low yield. A healthy pasture in mid-summer might produce 30 to 50 grams per square foot, which is 1,300 to 2,100 pounds per acre.

The clip and weigh method is best used a few times per season to calibrate your pasture stick or rising plate meter. Once you know how the stick readings relate to actual yields on your farm, you can rely on the faster methods.

How Much Forage Is Actually Grazeable

Not all the forage you measure is available to the cow. You must account for trampling, manure contamination, and the residual stubble you need to leave behind.

A good rule of thumb is that cattle can actually consume about 50 to 60 percent of the total forage dry matter in a paddock. The rest is trampled, soiled, or left as regrowth material. This is called the utilization rate.

To calculate grazeable forage, multiply your total forage estimate by 0.5 to 0.6. For example, if your pasture has 2,000 pounds of dry matter per acre, the grazeable portion is 1,000 to 1,200 pounds per acre.

If you are using rotational grazing with daily moves, you can achieve a higher utilization rate, maybe 60 to 70 percent. If you are continuous grazing, the utilization rate drops to 40 to 50 percent because cattle are selective and graze the same areas repeatedly.

Calculating Daily Herd Demand

You already know that one animal unit eats about 26 pounds of dry matter per day. To calculate your total herd demand, multiply the number of animal units by 26.

Herds with lactating cows have higher demand than dry cows. A lactating cow eating good quality pasture may consume 3.0 to 3.5 percent of her body weight per day, which is 30 to 35 pounds for a 1,000 pound cow. Adjust your demand estimate upward by 10 to 15 percent during peak lactation, which is usually 60 to 90 days after calving.

Growing cattle also have higher demand per pound of body weight. A 500 pound weaned calf eats about 3 percent of its body weight, or 15 pounds per day. Convert growing animals to animal units using the table above, then add 10 percent to account for their higher intake rate.

Your daily herd demand number is the basis for everything else. Write it on a card and keep it in your truck. You will use it every time you plan a paddock move.

Setting Your Stocking Rate

Stocking rate is the number of animals you keep on a given area of pasture for the whole grazing season. It is different from stocking density, which is the number of animals on a specific paddock at a specific time.

To set a realistic stocking rate, you need to know how much forage your land can grow in a typical year. This depends on rainfall, soil type, fertility, and your management practices.

A simple way to estimate your annual forage production is to use your county's average rainfall and the typical yield for your region. In the eastern United States, well managed cool season pastures produce 2 to 4 tons of dry matter per acre per year. In the western states, where rainfall is lower, production drops to 1 to 2 tons per acre. Irrigated pasture can produce 4 to 6 tons per acre.

To calculate stocking rate, use this formula:

Annual forage production (pounds per acre) times grazeable fraction (0.5 to 0.6) divided by annual herd demand (pounds per day times grazing days) equals acres needed.

Here is an example. Suppose your pasture produces 3 tons of dry matter per acre per year, which is 6,000 pounds. The grazeable fraction is 0.5, so you have 3,000 pounds of usable forage per acre. Your herd of 10 cows needs 260 pounds per day. You want to graze for 180 days.

Total forage needed is 260 pounds per day times 180 days, which equals 46,800 pounds. Divide that by 3,000 pounds per acre to get 15.6 acres. You need about 16 acres to support 10 cows for 180 days.

This calculation gives you a starting point. Adjust it based on your actual experience. If you have been grazing the same land for years, you already know from experience what your land can carry. Use the calculation to verify your experience and to plan changes.

Building a Rotational Grazing Plan

Rotational grazing is the practice of dividing your pasture into smaller paddocks and moving cattle through them on a schedule. The goal is to give each paddock a period of grazing followed by a period of rest. The rest period allows the grass to regrow before cattle return.

The number of paddocks you need depends on your desired rest period and grazing period. The formula is simple:

Number of paddocks equals rest period in days divided by grazing period in days, plus one.

For example, if you want a 30 day rest period and a 5 day grazing period, you need 30 divided by 5 plus 1, which equals 7 paddocks.

The rest period should match the time it takes grass to regrow to grazing height. In the spring, when growth is fast, a 20 to 30 day rest may be enough. In the summer, when growth slows, you may need 40 to 60 days of rest. In a drought, you may need even longer.

The grazing period depends on how many days you want cattle to stay in one paddock. A shorter grazing period, 1 to 3 days, gives you better forage utilization and more even manure distribution. A longer grazing period, 5 to 7 days, requires fewer fence moves and works well for larger herds.

Paddock Sizing

The size of each paddock depends on the number of animals, their daily demand, and the amount of forage available in that paddock.

Use this formula:

Paddock size in acres equals herd daily demand in pounds times grazing days per paddock divided by grazeable forage per acre in pounds.

For example, a herd of 30 cows needs 780 pounds of dry matter per day. You want them to stay in each paddock for 3 days. The pasture has 2,000 pounds of dry matter per acre, and the utilization rate is 0.5, so grazeable forage is 1,000 pounds per acre.

Paddock size equals 780 pounds per day times 3 days divided by 1,000 pounds per acre, which equals 2.34 acres.

This calculation assumes you know the forage available in each paddock. That means you need to measure each paddock before you turn cattle in. This is the core of feed budgeting. You are not guessing. You are measuring and calculating.

The One Third Rule

A useful guideline for rotational grazing is to take half, leave half. This means cattle should consume no more than half of the available forage in a paddock before you move them. The other half remains as leaf area to capture sunlight and regrow.

In practice, this works out to a simple rule. When cattle have grazed a paddock down to about half its starting height, move them. If the grass was 10 inches tall when they entered, move them when it is about 5 inches. This leaves enough leaf area for rapid regrowth.

The one third rule is a more aggressive version. It says take one third, leave two thirds. This works well in the summer when grass growth is slow and you need to protect the stand. It also works well on overgrazed pastures that need recovery.

Matching Feed Budget to Forage Growth

Pasture growth is not constant through the season. In most regions, there is a spring flush when grass grows rapidly, a summer slump when growth slows, and a fall recovery when cool temperatures return. Your feed budget must account for these changes.

The classic growth curve for cool season grasses in the eastern United States looks like this:

Spring flush: April through June. Growth is rapid, often 50 to 100 pounds of dry matter per acre per day. This is when you build a surplus.

Summer slump: July through August. Growth slows to 10 to 30 pounds per acre per day, and sometimes stops entirely in a drought. This is when you draw down your surplus.

Fall recovery: September through November. Growth picks up again to 30 to 60 pounds per acre per day. This is when you build root reserves for winter.

Warm season grasses have the opposite pattern. They grow slowly in the spring, peak in mid-summer, and slow again in the fall.

To manage these growth patterns, you need a feed budget that looks ahead 2 to 4 weeks. Here is a simple system:

Each week, estimate the total grazeable forage in all your paddocks. Divide that by your daily herd demand to get the number of days of grazing you have available. Then subtract the number of days until your next expected growth event.

For example, suppose you have 100 acres of pasture with an average of 2,000 pounds of dry matter per acre. That is 200,000 pounds total. The grazeable fraction is 0.5, so you have 100,000 pounds. Your herd of 50 cows needs 1,300 pounds per day. You have 100,000 divided by 1,300, which equals 77 days of grazing available.

If you are entering the summer slump and expect no growth for 60 days, you have enough. If you are entering a drought and expect no growth for 90 days, you are short and need to plan now.

This simple calculation is the heart of feed budgeting. It tells you when to sell, when to buy hay, and when to rest a paddock.

Setting Up a Grazing Chart

A grazing chart is a simple tool that tracks what is happening in each paddock. You can use a notebook, a spreadsheet, or a whiteboard in the barn. The chart should have a row for each paddock and columns for the following information:

• Paddock name or number
• Acreage
• Date cattle entered
• Estimated forage at entry
• Estimated forage at exit
• Date cattle exited
• Days of rest needed before regrazing
• Date the paddock is ready to regraze

Update the chart every time you move cattle. This takes about two minutes per move and gives you a complete history of your grazing system. Over time, you will see patterns. You will learn which paddocks produce more, which ones dry out first, and which ones recover fastest after grazing.

The grazing chart also helps you plan paddock moves in advance. When you move cattle into paddock 3, look at your chart and see when paddock 1 will be ready to regraze. If you are running short of ready paddocks, you know before you are in trouble.

Using a Feed Budget to Decide When to Buy Hay

One of the most valuable uses of a feed budget is deciding when to supplement with hay. Many producers wait until the pasture is bare before they start feeding hay. By then, the cattle are losing condition and the pasture is damaged.

A feed budget tells you when to start feeding before the damage occurs. Here is the rule:

Start feeding hay when the average pasture height drops below 4 inches for cool season grasses or 6 inches for warm season grasses. Do not wait until the pasture is bare.

When you start feeding hay, do not just put out hay and keep grazing the same pasture. Use the hay to give your pasture a rest. This might mean moving cattle to a sacrifice area or a dry lot for part of the day and grazing them on pasture for the rest. Or it might mean feeding hay in one paddock while the others recover.

The amount of hay you need to feed depends on how much pasture is still available. If the pasture has some growth, you can feed less hay. If the pasture is nearly bare, you need to feed full rations.

A simple calculation helps here. Suppose your herd needs 1,300 pounds of dry matter per day. The pasture is providing 500 pounds per day. You need to supplement 800 pounds per day. A typical round bale of hay weighs 1,200 pounds and has about 85 percent dry matter, so it provides about 1,020 pounds of dry matter. You would need about 0.8 bales per day to meet the deficit.

This calculation tells you how much hay to buy and how long it will last. It takes the guesswork out of hay purchasing.

Adjusting Stocking Rate Through the Season

A feed budget is not a once a year exercise. You should review it every week and adjust as conditions change.

The most common adjustment is to reduce stocking rate when forage growth slows. This can mean selling some animals, moving them to another property, or feeding more hay. The decision depends on your operation and market conditions.

Here is a decision framework to use when your feed budget shows a deficit:

If you are 0 to 2 weeks away from running out of forage, start feeding hay immediately and reduce grazing pressure on the most stressed paddocks.

If you are 2 to 4 weeks away, consider selling the lowest value animals. This might be open cows, older cows, or calves that are ready to wean.

If you are more than 4 weeks away, you have time to make strategic changes. Look at your feed budget and identify where you can improve efficiency. Can you move cattle to a different pasture? Can you reduce waste in your hay feeding? Can you improve your rotation schedule?

The key is to make decisions early, when you have options. Waiting until the pasture is bare leaves you with no good choices.

Managing Drought with a Feed Budget

Drought is the ultimate test of a feed budget. When rain stops, pasture growth stops, and your feed supply is fixed. A feed budget helps you stretch that supply as far as possible.

The first step is to recognize drought early. If you have had less than 1 inch of rain in 2 weeks and the forecast shows no rain, start planning. Do not wait until the grass is brown.

When drought hits, implement these strategies:

Reduce stocking rate immediately. Sell or move the lowest priority animals first. This preserves forage for the animals you keep.

Use the one third rule. Graze paddocks only down to the top third of the available forage. This leaves more leaf area and helps the grass survive the drought.

Feed hay in a sacrifice area. Move cattle to a small dry lot or sacrifice paddock and feed them hay there. This gives your pasture a complete rest and prevents further damage.

Consider early weaning. Weaning calves 30 to 60 days early reduces the cow's nutrient demand significantly. A dry cow needs about 30 percent less feed than a lactating cow.

Use a feed budget to calculate how long your forage will last. If you have 100,000 pounds of grazeable forage and your herd needs 1,300 pounds per day, you have 77 days. If you reduce the herd by 20 percent, you extend that to 96 days. If you also feed hay for part of the ration, you extend it further.

The goal is to keep your core breeding herd through the drought and protect your pasture from permanent damage. A feed budget tells you exactly what you need to do to achieve that goal.

Common Mistakes in Pasture Feed Budgeting

Many producers try feed budgeting and then give up because it does not seem to work. Usually the problem is not the system. It is one of these common mistakes.

Mistake 1: Overestimating Available Forage

Most producers overestimate how much grass is in their pasture. They look at a field that is green and assume it is full of forage. In reality, the grazeable portion is often less than half of what they think.

Avoid this by measuring with a pasture stick or rising plate meter. Do not eyeball it. And always apply the 50 percent utilization factor to your measurements.

Mistake 2: Ignoring the Residual Stubble

Grazing too low damages the grass crown and reduces regrowth. Many producers push their cattle to graze every last leaf because they think it is efficient. In reality, it is the opposite. Grazing too low reduces future production and opens the soil to weed invasion.

Leave at least 3 to 4 inches of stubble on cool season grasses and 4 to 6 inches on warm season grasses. This is not wasted forage. It is the engine that powers regrowth.

Mistake 3: Using a Fixed Rotation Schedule

Some producers set up a rotation schedule and follow it no matter what. They move cattle every 5 days regardless of pasture conditions. This ignores the reality of forage growth.

Your rotation should be flexible. Move cattle based on the residual stubble height, not the calendar. If the grass is not grazed down to the target height, leave the cattle longer. If it is grazed down early, move them sooner.

Mistake 4: Not Accounting for Forage Quality

A feed budget measures quantity, but quality also matters. Mature forage has less protein and energy than young forage. Cattle eating mature forage need more of it to meet their nutritional requirements.

If your pasture is heading out or becoming stemmy, adjust your budget. The cattle may need more forage by weight, or they may need supplementation to meet their protein needs.

Mistake 5: Forgetting to Update the Budget

A feed budget is not a one time calculation. It is a living document that needs weekly updates. Forage growth changes with the weather, and your budget must change with it.

Set a regular time each week to measure your pasture, update your grazing chart, and review your feed supply. This takes 30 minutes and prevents costly mistakes.

Mistake 6: Not Having a Backup Plan

Even the best feed budget cannot predict a drought, a hail storm, or a grasshopper outbreak. You need a backup plan for when the pasture fails.

Your backup plan should include a source of hay, a place to move cattle, and a trigger point for when to act. Decide now how long you can feed your herd and where the feed will come from.

Monitoring Pasture Health

A feed budget is not just about forage quantity. It is also about pasture health. A healthy pasture produces more forage, resists weeds, and recovers faster from grazing. Monitoring pasture health is part of the budgeting process.

Each time you move cattle, look at the paddock you are leaving. Ask these questions:

Is there adequate stubble left? The answer should be yes if you are following your budget.

Are there bare spots? Bare soil is an invitation to weeds and erosion. If you see bare spots, you are grazing too heavily or the soil is too compacted.

What weeds are present? A few weeds are normal. A lot of weeds indicates a problem with grazing pressure, fertility, or soil health.

Is the grass density good? A healthy pasture has a dense stand of grass plants. If you see large gaps between plants, the stand is thinning and needs attention.

Is there evidence of soil compaction? Look for water pooling, bare paths, or plants with shallow roots. Compaction reduces forage production and needs to be addressed with aeration or rest.

Keep notes on what you see. Over time, you will build a picture of how each paddock responds to your management.

Recordkeeping for Feed Budgeting

Good records are the foundation of good feed budgeting. You cannot make informed decisions without knowing what happened in the past. A simple recordkeeping system is better than no system at all.

Your records should include the following:

A pasture inventory showing the acreage and forage type of each paddock.

A grazing chart showing when each paddock was grazed and how long it rested.

A forage measurement log showing your pasture stick or rising plate meter readings each week.

A hay inventory showing how much hay you have and how much you are feeding per day.

A livestock inventory showing how many animals you have, their weights, and their class.

These records do not need to be elaborate. A spiral notebook and a pencil are enough. The key is consistency. Write things down every time you make a change.

At the end of each grazing season, review your records. Ask yourself what worked and what did not. Use this information to plan next year's feed budget.

When to Call an Extension Agent

Your local extension agent is your best resource for pasture management. They can help you with soil testing, forage identification, stocking rate calculations, and grazing planning. They also have access to regional data on forage production and drought conditions.

Call your extension agent when you are starting a grazing plan for the first time. They can help you calculate your stocking rate and design a rotation system that fits your land.

Call them when you are seeing problems you cannot explain. If your pasture is not growing as expected, if weeds are taking over, or if your cattle are losing condition despite adequate forage, an extension agent can help you diagnose the problem.

Call them during a drought. They have information on drought assistance programs, hay availability, and emergency grazing options that you may not know about.

Most extension agents are happy to visit your farm and walk your pastures with you. This is a free service that is well worth your time.

When to Call a Veterinarian

A feed budget is about nutrition, but nutrition problems can become health problems. You should call a veterinarian when you see signs that your cattle are not healthy, even if you think the cause is nutritional.

Signs that warrant a veterinary call include:

Cattle that are losing weight rapidly despite having access to forage.

Cattle that are weak, wobbly, or unable to stand.

Cattle with diarrhea, coughing, or nasal discharge.

Cattle with poor appetite or that are not coming to the feed bunk.

Cattle with rough hair coats, pale gums, or swollen joints.

A sudden death in the herd.

These signs can indicate a disease that needs treatment, not just a feed problem. A veterinarian can help you determine whether the issue is nutritional, infectious, or toxic.

Nutritional problems can also cause health issues that need veterinary attention. Grass tetany is a magnesium deficiency that can occur in cattle grazing lush spring pasture. Bloat can occur when cattle eat too much legume forage. Nitrate poisoning can occur when cattle eat stressed plants after a drought. These conditions are emergencies and require immediate veterinary care.

Your veterinarian can also help you design a mineral supplementation program that complements your feed budget. Mineral deficiencies can reduce forage utilization and cause health problems even when forage quantity is adequate.

Using Technology for Feed Budgeting

There are now several tools that can make feed budgeting easier. Some are simple apps that help you record pasture measurements and calculate grazing days. Others are more sophisticated systems that use satellite imagery to estimate forage production.

For most producers, a simple spreadsheet is the best tool. You can set up a spreadsheet with columns for paddock name, acreage, forage measurement, and grazing dates. The spreadsheet can calculate your daily herd demand, grazing days available, and projected feed gap.

There are also several mobile apps designed for grazing management. These apps let you record pasture measurements in the field, track paddock moves, and generate reports. Some are free, while others require a subscription. Search for grazing management apps in your app store and try a few to see which one fits your workflow.

Satellite based forage monitoring is becoming more accessible. These services use satellite imagery to estimate forage production across your property. They can be useful for large operations, but they are not necessary for most producers. A pasture stick and a notebook will give you 90 percent of the benefit at 10 percent of the cost.

Building a Whole Farm Feed Budget

A pasture feed budget is one part of a whole farm feed plan. The whole farm plan accounts for all feed sources, including pasture, hay, silage, and grain. It ensures that your animals have adequate nutrition throughout the year.

To build a whole farm feed budget, start with your livestock inventory. List every animal, its weight, and its production stage. Calculate the total daily dry matter demand for the herd.

Next, list all your feed sources. For pasture, use your grazing chart to estimate how many days of grazing you have. For hay, count your bales and estimate their weight. For silage, estimate the tons you have in storage.

Convert all feed sources to tons of dry matter. Compare this to your annual herd demand. If you have a surplus, you have a margin of safety. If you have a deficit, you need to buy feed or reduce the herd.

This whole farm approach protects you from running out of feed in the winter or during a drought. It also helps you decide how much hay to make or buy each year.

Case Example: A 50 Cow Herd in the Midwest

Here is a practical example to show how the system works together.

A producer in Missouri runs 50 cows with calves on 120 acres of cool season pasture. The cows average 1,200 pounds, so the herd is 60 animal units. Daily herd demand is 60 AU times 26 pounds per day, which equals 1,560 pounds of dry matter per day.

The producer divides the 120 acres into 12 paddocks of 10 acres each. In early May, the producer measures the pasture with a rising plate meter and finds an average of 2,500 pounds of dry matter per acre. The grazeable fraction is 0.5, so each paddock has 12,500 pounds of grazeable forage.

With a 3 day grazing period, the herd needs 4,680 pounds per paddock. Each paddock has 12,500 pounds, so the producer can graze about 2.5 paddock rotations before the paddock is fully utilized. The 12 paddocks provide about 30 days of grazing at this forage level.

The producer checks the pasture weekly. In late May, growth is strong at about 80 pounds per acre per day. The producer extends the rotation by moving cattle to a new paddock every 4 days instead of 3. This gives each paddock more rest and builds a surplus.

In July, a dry spell hits. The producer measures the pasture and finds only 1,500 pounds of dry matter per acre. The grazeable fraction is now 12,500 pounds per paddock instead of 12,500, so each paddock has 7,500 pounds. The herd will use each paddock in about 1.5 rotations. The producer has about 18 days of grazing left.

The producer decides to feed hay in a sacrifice area for 4 hours per day. This reduces pasture demand by about 30 percent. The feed budget now shows about 26 days of grazing left, which is enough to get through the dry spell.

By mid-August, rain returns and the pasture recovers. The producer returns to full grazing and continues the rotation. The feed budget has worked as an early warning system, allowing the producer to act before the pasture was damaged.

Frequently Asked Questions

How often should I measure my pasture?

Measure your pasture at least once a week during the growing season. This is often enough to catch problems before they become serious. If you are in a drought or experiencing rapid growth, measure twice a week. The measurement takes 15 to 20 minutes and gives you the data you need to make good decisions.

What is the difference between stocking rate and stocking density?

Stocking rate is the number of animals per acre over the whole grazing season. It is a long term number that reflects the carrying capacity of your land. Stocking density is the number of animals per acre in a specific paddock at a specific time. Rotational grazing uses high stocking density for short periods, but the overall stocking rate stays the same.

How do I know if I am overgrazing my pasture?

The most reliable sign is the residual stubble height. If you are consistently grazing below 3 inches on cool season grasses or 4 inches on warm season grasses, you are overgrazing. Other signs include bare soil, weed invasion, reduced regrowth, and cattle that are losing condition despite having access to pasture.

Can I use a feed budget for a small herd?

Yes. The principles are the same regardless of herd size. A producer with 5 cows can use a pasture stick and a notebook just as effectively as a producer with 500 cows. The calculations are simpler with a smaller herd, but the need for measurement and planning is the same.

What should I do if my pasture runs out before the season ends?

Act immediately. Start feeding hay, move cattle to another property if possible, or sell the lowest value animals. The longer you wait, the fewer options you have. If you have been keeping a feed budget, you should have seen the shortage coming several weeks in advance.

How much hay should I feed when supplementing pasture?

Feed enough to meet the deficit between what the pasture provides and what the herd needs. Calculate your herd demand, estimate what the pasture is providing, and feed the difference. For example, if your herd needs 1,300 pounds of dry matter per day and the pasture provides 500 pounds, feed 800 pounds of hay per day.

What is the ideal rest period for rotational grazing?

The ideal rest period depends on the season and the growth rate of your grass. In the spring, when growth is fast, a 20 to 30 day rest is usually enough. In the summer, when growth slows, you may need 40 to 60 days. In a drought, you may need 60 to 90 days or more. The goal is to let grass regrow to grazing height before cattle return.

Should I fertilize my pasture to increase forage production?

Fertilization can help, but only if your soil needs it. A soil test is the first step. Most pasture soils need lime, phosphorus, and potassium at different levels. Nitrogen is often the most limiting nutrient for grass growth. Apply fertilizer based on soil test recommendations and your target forage production. Overfertilizing is wasteful and can harm the environment.

Related Farming Guides

• Feed Budgeting for Beef Cattle: Calculating Winter Needs

This section will be populated programmatically with links to other farming guides on this site. Check back soon for related content on pasture management, rotational grazing systems, beef cattle nutrition, and forage establishment.

Related Clinical & Scientific Guides

• Water Buffalo Genetic Improvement and Breeding Programs
• Camel Farm Biosecurity: Disease Prevention and Quarantine Protocols
• Water Buffalo Farm Equipment and Infrastructure

References

• FAO Animal Production: https://www.fao.org/animal-production/en/
• USDA APHIS: https://www.aphis.usda.gov/
• 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.