# Goat Forage Quality Testing: When and How to Sample ## Key Takeaways - **Strategic Sampling is Paramount:** Test every new lot of hay before feeding, collecting cores from 15-20 bales using a core probe to create a representative composite sample. For pasture, sample just before grazing by walking a W-pattern and cutting forage at the goats' grazing height (1-2 inches). - **Nutritional Variability Dictates Testing Frequency:** Forage quality fluctuates significantly due to maturity, species, soil conditions, and harvest/storage methods; re-test whenever hay sources, cutting numbers, or fields change, and always test pasture before initiating grazing in a new paddock. - **Dry Matter Basis is Critical for Accurate Interpretation:** All forage test results must be reported on a dry matter basis to account for varying moisture content (8% in dry hay to 80% in fresh pasture), enabling accurate comparison to goat nutritional requirements for crude protein (8-18%), acid detergent fiber (ADF, <40%), and neutral detergent fiber (NDF, <60%). - **Laboratory Analysis Replaces Visual Assessment:** Rely on certified laboratory analysis for objective nutrient values (crude protein, ADF, NDF, TDN, minerals) rather than visual cues like color or smell, as these do not reliably predict nutritional content necessary for stages like lactation (14-16% CP) or growth (14-18% CP). - **Actionable Data Drives Ration Balancing:** Utilize lab report data to identify nutrient deficiencies (e.g., crude protein below 10% for lactating does) and excesses, enabling targeted supplementation and feeding strategies to meet specific goat life-stage requirements and optimize herd health and productivity. --- Knowing what is in your goat's hay and pasture is one of the most important parts of managing a healthy herd. Forage quality directly affects milk production, weight gain, parasite resistance, and overall herd health. Yet most goat owners feed the same hay year after year without ever checking its nutritional value. This article covers the complete process of goat forage testing, including when to test, how to collect samples correctly, how to read the lab report, and how to use those results to adjust your feeding program. It is written for small and mid-size herd owners, homesteaders, and commercial producers who want to make better feeding decisions based on real data rather than guesswork. ## At a Glance - Test every new load of hay before feeding it to your herd. - Sample hay with a core probe, not by grabbing flakes from a bale. - Collect samples from 15 to 20 bales per lot and mix them into one composite sample. - Test pasture or standing forage just before you plan to graze that paddock. - Use a certified forage testing laboratory that reports results on a dry matter basis. - Submit samples in winter for hay and in late spring through fall for pasture. - Re-test whenever you switch hay sources, cutting numbers, or fields. - Keep all lab reports in a binder or digital file so you can track changes over time. - Call your extension agent for help interpreting results and balancing rations. ## Why Forage Quality Varies More Than You Think Forage is a biological product, not a manufactured feed. Every cutting of hay or every grazing season produces something different. The same field can yield hay with dramatically different protein and energy levels depending on when it was cut, how it was cured, and what the weather did during harvest. Understanding this variability is the first step toward making forage testing a routine part of your management. ### Stage of Maturity at Harvest The single biggest factor controlling forage quality is the maturity of the plant when it is cut or grazed. Young, leafy plants are high in protein and low in fiber. As plants mature, they develop more stems, and those stems become increasingly fibrous. Lignin builds up in the cell walls, making the fiber harder for goats to digest. A legume like alfalfa cut at early bloom might test at 20 percent crude protein, while the same field cut at full bloom might drop to 14 percent or lower. Grass hays show even bigger swings. The difference between early vegetative growth and seed head emergence can be 6 to 8 percentage points of protein and a significant drop in digestible energy. ### Plant Species and Mixtures What is growing in your field matters as much as when you cut it. Legumes like alfalfa and clover generally run higher in protein and calcium than grasses. Warm season grasses like bermudagrass and bahiagrass are lower in protein and digestibility than cool season grasses like orchardgrass and fescue when cut at the same stage. Mixed hay can be tricky because the ratio of legume to grass changes from one cutting to the next. A field that was mostly alfalfa in first cutting might come back with more grass in second cutting, changing the nutritional picture completely. ### Soil Fertility and Moisture Soil nitrogen levels directly influence the protein content of grasses. A grass hay field that received heavy nitrogen fertilization will test higher in crude protein than the same field without fertilizer. Moisture stress during the growing season can also concentrate nutrients in the plant tissue, but it usually reduces total yield. Drought stressed forage might test higher in protein on a percentage basis, but the overall tonnage per acre is lower, so you may not have enough forage to feed your herd regardless of quality. ### Harvest and Storage Conditions How hay is cut, dried, baled, and stored affects quality as much as what is growing in the field. Rain damage after cutting leaches soluble carbohydrates and nitrogen out of the plant tissue. Hay that was baled too wet can heat in the bale, which reduces digestible protein and can lead to mold growth. Sun bleaching on the outside of bales destroys vitamins. Even well made hay loses quality over time in storage, especially if it is stored outside where moisture can penetrate the bale. ### The Problem with Visual Inspection Most goat owners judge hay quality by looking at it. They check for green color, smell, and leafiness. These are useful screening tools, but they cannot tell you the actual protein percentage, fiber content, or mineral levels. A beautiful green bale of grass hay might test at 7 percent protein, which is below what a lactating doe needs. A slightly brown bale of alfalfa might still be perfectly good feed. Color is not a reliable predictor of nutrient content. The only way to know what is in your hay is to have it analyzed in a laboratory. ## What a Forage Test Measures A standard forage test gives you the information you need to balance rations and identify potential problems. Understanding the basic terms on a lab report will help you interpret your results and explain them to your veterinarian or extension agent. ### Dry Matter and Moisture All forage test results are reported on a dry matter basis, which means the moisture has been removed mathematically. This is important because moisture content varies from 8 percent in very dry hay to 80 percent in fresh pasture. Comparing wet forage to dry forage without adjusting for moisture is like comparing apples to oranges. The lab report will list the dry matter percentage, and you can use that to calculate how much of each nutrient your goat is actually consuming. ### Crude Protein Crude protein is calculated from the nitrogen content of the forage. Most labs use a calculation based on the total nitrogen measured in the sample. For goats, crude protein is the standard measure used in ration balancing. The protein requirement changes with the animal's life stage. A mature buck in maintenance needs about 8 to 10 percent protein in his diet. A lactating doe producing heavy milk needs 14 to 16 percent. Growing kids need 14 to 18 percent depending on their size and growth rate. ### Acid Detergent Fiber Acid detergent fiber measures the cellulose and lignin portion of the plant. This is the least digestible part of the forage. ADF is used to calculate energy values and is a good indicator of overall digestibility. As ADF increases, digestibility decreases. High quality legume hay might have an ADF of 25 to 30 percent. Low quality grass hay can run 40 percent or higher. ### Neutral Detergent Fiber Neutral detergent fiber measures the total cell wall content of the plant, including hemicellulose, cellulose, and lignin. This is the fraction that takes the longest to digest and fills up the rumen. Goats need some NDF in their diet for proper rumen function, but too much fiber limits how much forage they can eat and how much energy they can extract from it. Good quality hay typically has NDF below 45 percent. Poor quality forage can exceed 60 percent NDF. ### Total Digestible Nutrients and Relative Feed Value Total digestible nutrients is an estimate of the energy available in the forage. It is calculated from the ADF value. TDN is useful for comparing forages and balancing energy in the ration. Relative feed value is a single number that compares the digestibility and intake potential of a forage to full bloom alfalfa, which is set at 100. RFV is primarily used for marketing dairy hay, but it can help you compare lots of hay quickly. Higher RFV means better quality. ### Minerals and Other Tests Basic forage tests usually include calcium, phosphorus, and sometimes potassium and magnesium. These major minerals are important for bone development, milk production, and metabolic health. You can request additional tests for trace minerals like copper, zinc, and selenium, but these cost extra and are usually only needed if you suspect a deficiency or toxicity problem. Some labs also offer tests for nitrates, mold, and mycotoxins when you have concerns about forage safety. ## When to Test Your Goat Forage Timing matters for getting useful results from forage testing. Testing at the wrong time or testing too infrequently will not give you the information you need to make good feeding decisions. ### Test Every New Lot of Hay The most important rule is to test every new lot of hay before you feed it. A lot is defined as hay from the same field, same cutting, and same harvest conditions. If you buy 50 bales from one farmer and those bales all came from the same field cut on the same day, they are one lot. If you buy hay from two different fields or two different cuttings, those are separate lots and need separate tests. Even if the hay looks the same, it can be nutritionally different. ### Test at the Beginning of the Feeding Season Fall is the traditional time to test hay in most parts of the country. You are bringing in new hay for the winter feeding period, and you need to know what you have before you start feeding. Testing in the fall also gives you time to adjust your feeding program or purchase supplements before the worst weather hits. If you feed hay year round, test each new batch as it arrives, not just once a year. ### Test Pasture Before Grazing For pasture, the timing is different. You want to test the forage that is actually available to your goats at the time they are grazing. Test a paddock just before you turn the goats in. This tells you what they are about to eat. Testing a month before grazing does not help because the forage will have matured and changed by the time the goats enter the paddock. For rotational grazing systems, this means testing each paddock as you move through the rotation. ### Re-Test When Conditions Change Any significant change in weather, management, or forage source should trigger a new test. Drought stressed pasture is different from well watered pasture. Hay from first cutting is different from third cutting. Hay stored for six months is different from freshly baled hay. If you notice your goats losing weight, dropping milk production, or showing other signs of poor nutrition, re-test your forage before you assume the problem is something else. ### When You Suspect a Problem If your herd is not performing as expected, forage testing should be part of your diagnostic process. Poor body condition, low milk production, poor growth in kids, and reproductive problems can all be caused by inadequate nutrition. Testing the forage tells you if the problem is in the feed. If the forage tests fine, you can move on to other possible causes like parasites, disease, or management issues. ## How to Sample Hay Correctly Sampling hay correctly is the difference between a useful test and a wasted one. A bad sample gives you bad data, and you will make feeding decisions based on that bad data. The goal is to collect a sample that accurately represents the entire lot of hay. ### Use a Core Probe The right tool for sampling hay is a core probe, also called a hay probe or forage sampler. This is a hollow metal tube with a sharp cutting edge that you drill into the end of a bale. The probe removes a core sample from the center of the bale, which is the most accurate way to sample hay. Grabbing a handful of leaves from the outside of a bale does not work because the outside is exposed to weather and sunlight, which changes its nutrient content. The inside of the bale is more representative of what the goat actually eats. Core probes are available from farm supply stores, forage testing labs, and online retailers. They come in different lengths for different bale sizes. A standard 18 inch probe works for most small square bales. Larger round bales may need a longer probe. You can mount the probe on a drill or use a hand brace. Electric drills make the job faster and easier, especially when sampling many bales. ### Sample 15 to 20 Bales Per Lot The more bales you sample, the more accurate your composite sample will be. Forage testing labs recommend sampling at least 15 to 20 bales per lot. This might seem like a lot, but it only takes a few minutes per bale, and the accuracy improvement is significant. Forage varies from bale to bale, and sampling too few bales can give you a distorted picture. If you have a very large lot of 100 bales or more, sample 20 bales. For smaller lots, sample at least 10 to 15 bales. ### Collect Cores from the Center of Each Bale Drill the probe into the center of the bale, perpendicular to the surface. For small square bales, push the probe through the center from the end or side. For round bales, sample from the curved side, pushing the probe toward the center. Avoid sampling the outer 2 to 3 inches of the bale, which has been exposed to weather and may not represent the true quality of the forage. Take one core from each bale. Combine all the cores from the same lot into a single clean bucket. ### Mix the Cores Thoroughly After collecting cores from all the bales, mix them thoroughly in the bucket. The goal is to create a uniform composite sample. Break up any large clumps and make sure the sample is well blended. Then take a subsample of about one pound or the amount specified by your testing lab. The lab will tell you the minimum sample size they need. Put this subsample in a clean plastic bag, preferably a zipper style bag, and squeeze out as much air as possible before sealing. ### Label the Sample Clearly Every sample needs a clear label. Use a permanent marker to write on the bag or attach a label with the lot number, cutting number, field identification, and date. Include your name and contact information. If you are submitting multiple samples, make sure the labels match the submission form. A mislabeled sample is worse than no sample because it gives you false information about the wrong lot of hay. ### Complete the Submission Form Most labs have a submission form you can fill out online or print and include with your sample. The form asks for your contact information, the type of forage, the test package you want, and any special instructions. Fill out the form completely. The lab uses this information to interpret your results and provide appropriate recommendations. If you are testing hay for goats, note that on the form. Some labs offer goat specific test packages or recommendations. ### Send the Sample Promptly Forage samples should be sent to the lab as soon as possible after collection. Moisture in the sample can cause mold growth if the sample sits for too long, which will change the test results. If you cannot mail the sample immediately, keep it in the refrigerator. Do not freeze the sample unless the lab specifically instructs you to do so. Most labs recommend shipping samples early in the week so they do not sit in a post office over the weekend. ## How to Sample Pasture and Standing Forage Pasture sampling requires a different approach because you are sampling growing plants rather than dried bales. The goal is to collect a sample that represents what your goats are actually grazing. ### Walk the Paddock in a W Pattern To get a representative sample of a pasture, walk the paddock in a W or zigzag pattern. This ensures you collect from all parts of the field, not just the easy to reach areas near the gate. Goats are selective grazers and will eat the best plants first, so the forage you sample should be what is available, not what you think they prefer. ### Cut Forage at Grazing Height Use a sharp scissors or shears to cut forage samples at the height your goats are actually grazing. This is typically 1 to 2 inches above the soil surface for goats. If you sample tall, mature plants that the goats would not eat, your test results will not reflect what they are consuming. Clip the forage into a bucket, collecting small amounts from multiple locations across the paddock. ### Collect 15 to 20 Subsamples Just like with hay, you need multiple subsamples to create a representative composite. Collect 15 to 20 small handfuls from different spots across the paddock. Mix them together in the bucket, then take a one pound subsample for the lab. Avoid collecting plants that are obviously dead, moldy, or contaminated with soil. Soil contamination can affect mineral test results and make the sample inaccurate. ### Sample Before Each Grazing Rotation For rotational grazing systems, sample each paddock just before you move the goats in. This gives you the most current information about what they will be eating. The quality of pasture changes rapidly as plants mature, so testing a paddock two weeks before grazing does not tell you what you need to know. Make pasture sampling part of your regular rotation routine. ### Consider Sampling What Goats Actually Select Goats are browsers as well as grazers. They will eat leaves from shrubs, trees, and weeds in addition to grass and legumes. If your goats have access to browse, the pasture sample will not capture everything they eat. For a more accurate picture of their total forage intake, you would need to observe what they are selecting and sample those plants specifically. This is more complicated but can be useful for identifying nutrient deficiencies in herds that rely heavily on browse. ## Choosing a Forage Testing Laboratory Not all forage testing labs are the same. Choosing a good lab is important for getting accurate, useful results. Look for a lab that is certified by the National Forage Testing Association. This certification means the lab participates in regular proficiency testing and meets quality standards for forage analysis. ### Types of Labs There are two main types of forage analysis methods. Near infrared reflectance spectroscopy is a scanning method that predicts nutrient content based on the way light reflects off the sample. Wet chemistry methods actually dissolve the sample and measure nutrients directly. Both methods can be accurate when done by a good lab. NIR is usually faster and cheaper, while wet chemistry is often considered the gold standard. Many labs use a combination of both methods. ### What to Look For When choosing a lab, look for one that: - Is certified by the National Forage Testing Association - Reports results on a dry matter basis - Offers goat specific recommendations or can help you interpret results - Has a quick turnaround time, usually 3 to 5 business days - Provides clear, easy to read reports - Has good customer service and can answer questions about your results ### Cost of Testing Forage testing is relatively inexpensive compared to the cost of feed. A standard forage test costs between $15 and $30 per sample. This includes dry matter, crude protein, ADF, NDF, TDN, and major minerals. Additional tests for trace minerals or mycotoxins cost extra. When you consider that a single bale of quality hay can cost $10 or more, testing a whole lot of hay for the price of a few bales is a smart investment. ### Where to Find Labs Your local cooperative extension office can recommend a forage testing lab in your area. Many land grant universities operate forage testing labs that accept samples from the public. Private labs are also available in most regions. Search for forage testing labs that serve your state or region. Some labs accept samples by mail from anywhere in the country. ## How to Read Your Forage Test Report Getting the lab report is only half the battle. You need to understand what the numbers mean and how to use them to make feeding decisions. Most lab reports include a column for your results and a column for typical values or recommended levels for different classes of livestock. ### Find the Dry Matter Basis The first thing to check is the dry matter basis. All the nutrient values on the report should be listed on a dry matter basis. If the report lists "as fed" values, you will need to convert them to dry matter before you can compare them to your goats' requirements. The dry matter percentage tells you how much water is in the forage. Hay should be 88 to 92 percent dry matter. Silage or baleage will be lower, often 40 to 60 percent dry matter. ### Compare Protein to Requirements Look at the crude protein value and compare it to the requirements of the animals you are feeding. A lactating doe needs more protein than a dry doe or a buck. Growing kids need more protein than mature animals. If your forage tests below the requirement for your most demanding animals, you will need to supplement with a higher protein feed. If it tests above requirements, you may be able to feed less supplement or none at all. ### Check Fiber Levels The ADF and NDF values tell you about digestibility and intake potential. High fiber forage is less digestible and fills the rumen faster, so goats cannot eat as much of it. This means they get less energy from each pound of feed. Low fiber forage is more digestible and supports higher intake. For goats, look for ADF below 35 percent and NDF below 50 percent for good quality forage. Values above these levels indicate lower quality feed that may need supplementation. ### Calculate Energy Intake The TDN value estimates the energy available in the forage. Compare this to your goats' energy requirements. Lactating goats and growing kids have high energy needs. If your forage is low in TDN, you may need to feed grain or other energy supplements. Remember that goats need energy from forage first, with grain as a supplement to fill gaps, not the other way around. ### Review Mineral Levels Check the calcium and phosphorus values on your report. Goats need a calcium to phosphorus ratio of about 2 to 1. Legume hays are naturally high in calcium, while grass hays are lower. If your forage is low in calcium or phosphorus, you may need to provide mineral supplements. Be especially careful with phosphorus, because high phosphorus levels can interfere with calcium absorption and lead to urinary calculi in bucks and wethers. ### Watch for Problem Indicators Some lab reports include notes about nitrate levels, mold contamination, or other issues. High nitrate levels can be toxic to goats, especially in drought stressed forage. Mold in hay can cause respiratory problems and reduce feed intake. If your report shows any of these issues, contact your veterinarian or extension agent for guidance. ## Using Forage Test Results to Balance Rations Forage testing is only useful if you act on the results. The numbers on the lab report should drive your feeding decisions. Here is how to put your forage test results to work. ### Calculate How Much Forage Your Goats Need Goats eat about 2 to 4 percent of their body weight in dry matter per day, depending on their production stage and the quality of the forage. A 100 pound doe needs 2 to 4 pounds of dry matter per day. If your forage is high quality, she can get most of her nutrients from forage alone. If it is lower quality, she will need supplements to meet her requirements. ### Match Forage to Animal Class If you have multiple groups of goats, feed the best forage to the animals with the highest nutritional needs. Lactating does, growing kids, and late gestation does should get the highest quality forage. Dry does, bucks, and mature wethers can do fine on lower quality forage. This is called targeted feeding, and it saves money by not feeding expensive high quality hay to animals that do not need it. ### Supplement to Fill Gaps Once you know what your forage provides, you can calculate what is missing. If your hay tests at 10 percent protein and your lactating does need 14 percent, you need to provide the additional 4 percent through a supplement. This could be a higher protein hay, alfalfa pellets, soybean meal, or a commercial goat feed. Work with your extension agent or a nutritionist to develop a supplement program that meets your herd's needs without overfeeding. ### Adjust Feeding Rates Forage test results can also tell you how much to feed. Low quality forage has lower digestibility, so goats need to eat more of it to get the same nutrients. But high fiber forage fills the rumen faster, so they cannot physically eat enough to meet their needs. This is why low quality forage often leads to weight loss even when goats have free choice access. If your forage tests low in quality, you need to supplement with a more digestible feed source. ### Monitor Body Condition Forage testing works best when combined with regular [body condition scoring](/knowledge/animal-farming/farm-management/body-condition-scoring-a-tool-for-feed-management). Check your goats' body condition every 2 to 4 weeks and adjust feeding based on what you see. If goats are losing condition even though your forage test says the quality is adequate, there may be other problems like parasites, dental issues, or disease. If goats are gaining weight on forage that tests marginal, you may be feeding more than they need. ## Common Mistakes in Goat Forage Testing Avoiding common mistakes will save you time and money and give you more useful results. Here are the most frequent errors goat owners make with forage testing. ### Sampling Too Few Bales Taking one or two cores from a single bale and calling it a representative sample is the most common mistake. Forage varies from bale to bale, and a single sample cannot capture that variability. Always sample at least 15 to 20 bales per lot and combine them into a composite sample. ### Grabbing Handfuls Instead of Coring Pulling a handful of hay from the outside of a bale is not a valid sampling method. The outside of the bale is weathered and does not represent the forage inside. Use a core probe to sample from the center of the bale where the forage is protected from the elements. ### Mixing Lots in One Sample Combining hay from different fields, different cuttings, or different harvest dates into one sample gives you an average that does not represent any of the lots. Keep lots separate and test each one individually. If you are feeding a mixture of hays, you need to know what each component provides. ### Testing at the Wrong Time Testing hay that has been stored for months does not tell you what the hay was when it was baled. Quality declines during storage, especially if the hay is stored outside. Test hay when you receive it, and re-test if it has been stored for a long time before feeding. ### Ignoring the Results The biggest mistake is spending money on forage testing and then not using the results. If you test your hay but keep feeding the same ration without adjustments, the test was a waste of money. Use the results to balance your feeding program and monitor your herd's condition. ### Forgetting to Adjust for Dry Matter Comparing as fed values to dry matter requirements leads to errors in ration formulation. Always check the dry matter basis on your lab report and calculate your feeding program on a dry matter basis. This is especially important when feeding silage or baleage, which has much higher moisture content than hay. ## Decision Thresholds for Goat Forage Quality Using forage test results to make feeding decisions requires knowing what the numbers mean for your goats. Here are some general thresholds to guide your decisions. ### Crude Protein Thresholds - Below 8 percent: Too low for all goats except mature dry animals. Supplement with protein or feed better forage. - 8 to 10 percent: Adequate for dry does and mature bucks. Too low for lactating does and growing kids. - 10 to 12 percent: Adequate for does in early to mid gestation. Marginal for lactating does. - 12 to 14 percent: Good for lactating does and growing kids. Adequate for most production stages. - Above 14 percent: Excellent quality. May allow reduced or eliminated protein supplementation. ### ADF Thresholds - Below 30 percent: Excellent digestibility. Goats can consume large amounts and extract plenty of energy. - 30 to 35 percent: Good quality. Supports good intake and production. - 35 to 40 percent: Marginal quality. May limit energy intake for high producing animals. - Above 40 percent: Poor quality. Expect reduced intake and lower production. Supplementation is essential. ### NDF Thresholds - Below 40 percent: Excellent quality with high intake potential. - 40 to 50 percent: Good quality. Adequate for most goats. - 50 to 60 percent: Marginal quality. Intake may be limited. - Above 60 percent: Poor quality. Goats cannot eat enough to meet their energy needs. ### TDN Thresholds - Below 50 percent: Low energy. Expect weight loss without supplementation. - 50 to 55 percent: Marginal energy. Adequate for maintenance but not production. - 55 to 60 percent: Good energy. Supports moderate production. - Above 60 percent: Excellent energy. Supports high milk production and rapid growth. ### When to Supplement Use these thresholds to decide when to add supplements to your feeding program: - If crude protein is below 10 percent and you are feeding lactating does or growing kids, add a protein supplement. - If ADF is above 35 percent, consider adding a more digestible energy source like grain. - If NDF is above 50 percent, expect reduced intake and add supplements to meet nutrient needs. - If TDN is below 55 percent, add energy supplements for any animal in production. These are general guidelines. Your specific situation may require different thresholds depending on your herd, your goals, and your management system. Work with your extension agent or veterinarian to set thresholds that make sense for your operation. ## Monitoring and Recordkeeping Forage testing is most valuable when you track results over time. Keeping good records helps you identify trends, compare different hay sources, and make better purchasing decisions in the future. ### Keep All Lab Reports Store every forage test report in a binder or digital file. Include the date, the lot identification, the field or source, and any notes about weather or management conditions. This record becomes more valuable with each passing year as you build a history of your forage quality. ### Track Trends Over Time Look for patterns in your forage test results. Does first cutting hay always test lower in protein than second cutting? Does hay from a particular field consistently run higher in fiber? Does hay from a certain supplier test differently from year to year? This information helps you make better purchasing decisions and anticipate problems before they affect your herd. ### Record Feeding Decisions Write down what you did with each lot of forage. Did you supplement with protein because the hay tested low? Did you feed this hay only to dry does and save better hay for lactating does? This record helps you evaluate whether your feeding decisions were effective and adjust your approach in the future. ### Track Herd Performance Connect your forage test results to your herd's performance. Record body condition scores, milk production, weight gains, and health problems. If you see a decline in performance that matches a drop in forage quality, you will know to expect that pattern in the future and can adjust feeding earlier. ### Use Records for Purchasing Decisions When you buy hay, use your records to evaluate the price against the quality. A $8 bale of hay that tests at 8 percent protein may be a worse deal than a $10 bale that tests at 12 percent protein, once you factor in the cost of supplementation. Over time, you will learn which suppliers provide the best value and which hay sources you should avoid. ## When to Call a Veterinarian or Extension Agent Forage testing can identify many nutritional problems, but some situations require professional help. Know when to call in an expert. ### Suspected Toxicity or Contamination If your forage test shows high nitrate levels, mold contamination, or other signs of toxicity, call your veterinarian immediately. Nitrate poisoning can be fatal to goats, and moldy hay can cause serious health problems. Do not feed suspect forage until you have professional guidance. ### Unexplained Health Problems If your goats are losing weight, going off feed, or showing other signs of illness despite adequate forage quality, call your veterinarian. The problem may be parasites, disease, or a nutritional imbalance that your basic forage test did not detect. Your veterinarian can help you investigate other causes. ### Ration Balancing for High Producing Herds If you have a commercial dairy goat herd or are pushing for maximum growth rates in kids, consider working with a nutritionist or extension agent to balance rations. They can help you use your forage test results to formulate a complete feeding program that meets the specific needs of your animals. ### Designing a Supplement Program If your forage tests consistently come up short of your herd's needs, an extension agent can help you design a cost effective supplement program. They can recommend specific feed products, calculate feeding rates, and help you evaluate the economics of different options. ### Interpreting Unusual Results If your forage test results seem odd or inconsistent with what you expected, call the lab or your extension agent. There may have been a sampling error, a lab error, or an unusual condition in your forage that needs investigation. Do not make feeding decisions based on results you do not understand. ### Regulatory or Market Requirements If you are selling hay or forage products, or if you are subject to any regulatory requirements for feed quality, your extension agent can help you understand what testing is required and how to document your results. ## Frequently Asked Questions ### How often should I test my goat's hay? Test every new lot of hay before you feed it. A lot is hay from the same field, same cutting, and same harvest conditions. If you buy hay from a new supplier, test it even if you have bought from that supplier before, because quality changes from year to year and cutting to cutting. For hay you have tested and stored properly, re-test after 6 months of storage if you are still feeding it, because quality declines over time. ### Can I test a single bale of hay? You can test a single bale, but the results only apply to that one bale. Since forage varies from bale to bale, a single bale test does not tell you about the rest of the lot. If you only have one bale and you want to know its quality, go ahead and test it. But for making feeding decisions about a whole lot, you need to sample multiple bales and create a composite sample. ### How much does forage testing cost? A standard forage test costs between $15 and $30 per sample. This includes dry matter, crude protein, ADF, NDF, TDN, and major minerals. Additional tests for trace minerals, nitrates, or mycotoxins cost extra. Some labs offer discounted rates for bulk submissions or seasonal promotions. The cost is small compared to the cost of feed and the potential losses from feeding poor quality forage. ### What is the difference between ADF and NDF? Acid detergent fiber measures the cellulose and lignin portion of the plant, which is the least digestible part. Neutral detergent fiber measures the total cell wall content, including hemicellulose, cellulose, and lignin. ADF is used to calculate energy values and digestibility. NDF is related to intake potential, because it is the fraction that fills the rumen. High ADF means low digestibility. High NDF means goats cannot eat as much. ### My hay looks green and smells good. Do I still need to test it? Yes. Visual appearance is not a reliable indicator of nutritional content. Green color and good smell tell you the hay was likely harvested and stored properly, but they do not tell you the protein percentage, fiber content, or mineral levels. Two bales of hay that look identical can test very differently. The only way to know what is in your hay is to have it analyzed. ### Can I use a forage test designed for cattle on my goats? Yes. The basic forage analysis is the same regardless of the animal species. The lab measures the nutrient content of the forage, and that does not change based on what animal will eat it. The difference is in how you interpret the results. Goats have different nutritional requirements than cattle, so you need to compare your forage test results to goat requirements, not cattle requirements. ### How do I collect a pasture sample? Walk the paddock in a W pattern and clip small amounts of forage at grazing height from 15 to 20 different locations. Mix the samples together in a bucket and take a one pound subsample for the lab. Sample just before you turn the goats into the paddock, because pasture quality changes rapidly as plants mature. ### What should I do if my forage test shows low protein? If your forage tests below the protein requirements of your goats, you have several options. You can feed a higher protein supplement like alfalfa pellets, soybean meal, or a commercial goat feed. You can mix the low protein hay with higher quality hay. Or you can feed the low protein hay to animals with lower protein requirements, like dry does and bucks, and reserve better forage for lactating does and growing kids. Work with your extension agent to determine the most cost effective approach for your situation. ## Related Farming Guides This section will be populated with links to related farming guides on [goat nutrition](/knowledge/animal-farming/goats/goat-nutrition-basics-essential-nutrients-feeding-management), hay selection, pasture management, and herd health. Check back for updated content or browse the site for more goat management resources. ## Related Clinical & Scientific Guides * [Goat Breeding Season Planning: Timing, Nutrition, and Health Checks](/knowledge/animal-farming/goats/goat-breeding-season-planning) * [Alfalfa Hay for Goats: Feeding Decisions and Mineral Context](/knowledge/animal-farming/goats/alfalfa-hay-for-goats-feeding-decisions-and-mineral-context) * [Goat Fiber Production: Cashmere and Mohair Management](/knowledge/animal-farming/goats/goat-fiber-production-cashmere-mohair-management) ## References - American Consortium for [Small Ruminant Parasite Control](/knowledge/veterinary-medicine/food-animal-medicine/small-ruminant-parasite-control-diagnostic-strategies-anthelmintic-stewardship) (ACSRPC): https://www.wormx.info/ - USDA APHIS Goat Health: https://www.aphis.usda.gov/livestock-poultry-disease/sheep-goats - FAO Sheep and Goat Production: https://www.fao.org/animal-production/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.