# Goat Manure Composting: Methods, Nutrient Content, and Field Application


## Key Takeaways

- Composting goat manure effectively transforms waste into a valuable soil amendment by reducing volume by 40-60% and eliminating weed seeds and pathogens through thermophilic temperatures (55-65°C).
- Achieving an optimal carbon-to-nitrogen (C:N) ratio of 25:1 to 35:1 is critical; goat manure (12:1-20:1) requires supplementation with high-carbon materials like straw (C:N 80:1) or wood shavings (C:N 200:1-500:1) to prevent ammonia volatilization and ensure efficient decomposition.
- Windrow composting, requiring regular turning every 3-7 days, offers faster decomposition (4-8 weeks) but higher labor input, while static pile composting relies on passive aeration for slower decomposition (8-16 weeks) with reduced labor.
- Finished goat manure compost typically contains 1.0-2.5% nitrogen, 0.5-1.5% phosphorus (P2O5), and 1.0-3.0% potassium (K2O), with nutrient content influenced by goat diet, bedding, and composting methodology.
- Field application rates should be calculated based on crop nutrient requirements, with a general guideline of 2.5 tons per acre for a crop needing 100 lbs/acre of nitrogen from compost with 2% N content, assuming 50% nitrogen availability in the first year.
- Proper composting significantly mitigates risks associated with *Coxiella burnetii* (Q fever agent), but food safety guidelines recommend application at least 90 days before harvest for crops grown close to the ground.

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Goat manure composting transforms a daily waste stream into a stable soil amendment that supplies organic matter and plant nutrients. For a goat farmer managing 20 to 200 animals, composting reduces manure volume, kills weed seeds and pathogens, and produces a product that can be sold or applied to pastures and gardens. This article covers the two main composting methods suitable for goat operations, the carbon-to-nitrogen ratio adjustments needed for goat manure, expected nutrient content of finished compost, and field application rates that match crop needs.

## At a Glance: Goat Manure Composting Overview

| Factor | Windrow Composting | Static Pile Composting |
|--------|-------------------|----------------------|
| Space required | 3 to 5 feet wide, 4 to 6 feet tall, length variable | 4 to 6 feet diameter, 4 to 5 feet tall |
| Turning frequency | Every 3 to 7 days during active phase | None, relies on passive aeration |
| Active composting time | 4 to 8 weeks | 8 to 16 weeks |
| Labor input | High (regular turning) | Low (initial construction only) |
| Odor potential | Low if turned properly | Moderate if pile becomes anaerobic |
| Nutrient retention | Moderate, some nitrogen lost during turning | Higher nitrogen retention possible |
| Best for | Farmers with equipment (tractor, bucket) | Small herds or limited equipment |

The choice between windrow and static pile depends on herd size, available equipment, and labor. Both methods produce usable compost when managed correctly.

## Why Compost Goat Manure

Raw goat manure applied directly to soil can cause problems. Fresh manure contains viable weed seeds, pathogens such as *Coxiella burnetii* (the agent of Q fever), and high ammonium levels that can burn plant roots. A study examining the role of land-applied goat manure in the 2007-2010 Dutch Q fever outbreak found that properly composted manure posed a minor transmission risk compared to raw manure [10]. Composting generates internal temperatures of 55 to 65 degrees Celsius for several days, which kills most weed seeds and pathogens.

Composting also stabilizes nitrogen. Raw goat manure loses nitrogen rapidly through ammonia volatilization. The composting process converts ammonium into organic forms that release nutrients slowly after soil application. This reduces the risk of nitrogen leaching into groundwater and provides a more balanced nutrient supply to crops.

From a farm management perspective, composting reduces manure volume by 40 to 60 percent. A goat produces approximately 0.5 to 1.0 kilograms of manure per day. For a herd of 50 goats, that is 25 to 50 kilograms of manure daily. Composting concentrates this material into a manageable product that can be stored, sold, or applied at agronomic rates.

## Carbon-to-Nitrogen Ratio Management

Goat manure has a carbon-to-nitrogen (C:N) ratio of approximately 12:1 to 20:1, depending on diet and bedding. This is lower than the ideal composting range of 25:1 to 35:1. Without adjustment, goat manure composts slowly and may produce ammonia odors.

### Calculating the C:N Ratio

To achieve the target C:N ratio, mix goat manure with high-carbon materials. Common carbon sources include:

- Straw (C:N 80:1)
- Wood shavings or sawdust (C:N 200:1 to 500:1)
- Dried leaves (C:N 50:1)
- Corn stalks (C:N 60:1)

The calculation uses the dry weight of each material. For example, to compost 100 kilograms of goat manure (C:N 15:1) with straw (C:N 80:1), add approximately 25 to 30 kilograms of straw to reach a 30:1 ratio. A simple formula is:

Target C:N = (Weight of manure x C:N of manure + Weight of carbon source x C:N of carbon source) / Total weight

Farmers can use online calculators or consult local extension services for precise mixing ratios. The USDA Natural Resources Conservation Service provides guidance on composting and nutrient management through its field offices [2].

### Adjusting for Bedding

Goats housed on deep bedding already have some carbon mixed into the manure. Straw bedding raises the C:N ratio of the manure-bedding mixture. If goats are kept on wood shavings, the mixture may already be near the target range. Test the C:N ratio of the raw material before adding extra carbon. A simple jar test for ammonia odor can indicate if the pile is too high in nitrogen. If ammonia is detectable at arm's length from the pile, add more carbon material.

## Composting Methods

### Windrow Composting

Windrow composting involves forming long, narrow piles that are turned regularly. This method is suitable for herds producing more than 50 kilograms of manure per day.

**Construction.** Build a windrow 3 to 5 feet wide at the base and 4 to 6 feet tall. The length depends on available space and manure volume. The pile should be placed on a level, well-drained surface. A concrete pad or compacted clay base prevents nutrient leaching into groundwater.

**Turning.** Turn the windrow every 3 to 7 days during the first 4 weeks. Turning mixes the outer material into the hot center, ensures uniform decomposition, and introduces oxygen. Use a tractor with a front-end loader or a dedicated compost turner. After 4 weeks, reduce turning frequency to every 10 to 14 days until the compost is stable.

**Moisture.** Maintain moisture content at 50 to 60 percent. Squeeze a handful of compost. It should feel like a wrung-out sponge. If water drips out, the pile is too wet. If it crumbles, add water during turning.

**Temperature.** Monitor internal temperature with a compost thermometer. The pile should reach 55 to 65 degrees Celsius within 3 to 5 days and maintain that temperature for at least 3 consecutive days to kill pathogens and weed seeds. If temperature does not rise, the pile may be too dry, too wet, or lacking nitrogen.

### Static Pile Composting

Static pile composting uses passive aeration through perforated pipes or a base layer of coarse material. This method requires less labor but takes longer.

**Construction.** Build a pile 4 to 6 feet in diameter and 4 to 5 feet tall. Place a layer of coarse material such as wood chips or brush at the base to allow air entry. Insert perforated PVC pipes horizontally through the pile at 2-foot intervals. Cover the pile with a 2-inch layer of finished compost or straw to insulate the surface.

**Aeration.** Static piles rely on natural convection. Warm air rises through the pile, drawing fresh air in from the base. Do not turn the pile. If the pile becomes anaerobic (smells like rotten eggs or ammonia), rebuild it with more coarse material or smaller dimensions.

**Time.** Static piles take 8 to 16 weeks to reach stability. The center of the pile should reach 55 degrees Celsius for at least 3 days. After the active heating phase, allow the pile to cure for 4 to 8 weeks before use.

### Comparison of Methods

Research on composting goat manure with different turning frequencies has examined nutrient retention. A study published in *PloS one* titled "Effects of turning frequency on the nutrients of Camellia oleifera shell co-compost with goat dung and evaluation of co-compost maturity" found that turning frequency affected nutrient content and compost maturity [6]. While the specific findings are not detailed here, the study indicates that management decisions about turning frequency influence final compost quality.

Windrow composting produces compost faster and with more uniform quality. Static pile composting saves labor but requires careful initial construction and longer curing time. For farmers with limited equipment, static piles are more practical.

## Nutrient Content of Goat Manure Compost

Finished goat manure compost contains nitrogen, phosphorus, potassium, and micronutrients. The exact nutrient content depends on the goat diet, bedding material, composting method, and degree of decomposition.

### Expected Nutrient Ranges

Based on published research and agricultural extension data, goat manure compost typically contains:

- Nitrogen (N): 1.0 to 2.5 percent dry weight
- Phosphorus (P2O5): 0.5 to 1.5 percent dry weight
- Potassium (K2O): 1.0 to 3.0 percent dry weight

These values are lower than raw manure because composting reduces volume and some nitrogen is lost as ammonia. However, the nutrients in compost are more stable and release slowly over months to years.

A study published in *Environmental science and pollution research international* titled "Optimizing cattle and goat manure quality to improve fertility status of fragile soils in semi-arid agrozone of Samburu County, Kenya" examined manure quality optimization for soil fertility [7]. The research highlights that manure management practices influence nutrient content and soil improvement potential.

### Factors Affecting Nutrient Content

**Diet.** Goats fed high-protein diets produce manure with higher nitrogen content. Grain supplementation increases nitrogen concentration. Pasture-fed goats produce manure with lower nitrogen but higher organic matter.

**Bedding.** Straw and wood shavings dilute nutrient concentration but add organic matter. Compost with high bedding content has lower NPK values per unit weight but improves soil structure more effectively.

**Composting method.** Turning exposes manure to air, which increases nitrogen loss through ammonia volatilization. A study in *Molecules* titled "Effect of Microbial Inoculation on Carbon Preservation during Goat Manure Aerobic Composting" examined carbon preservation during composting [8]. Another study in *Bioresource technology* titled "Effect of micronutrient selenium on greenhouse gas emissions and related functional genes during goat manure composting" investigated greenhouse gas emissions [9]. These studies indicate that composting conditions affect nutrient retention and environmental impact.

**Additives.** Adding microbial inoculants or mineral additives can influence nutrient content. Research in *The Science of the total environment* titled "Role of selenite on the nitrogen conservation and greenhouse gases mitigation during the goat manure composting process" examined nitrogen conservation during composting [11]. Farmers should test finished compost to determine actual nutrient content.

## Testing Compost Quality

Before field application, test compost for nutrient content, pH, salinity, and maturity. Laboratory analysis provides precise data for calculating application rates.

### Sampling Protocol

Collect samples from multiple locations within the compost pile. For a windrow, take samples from the top, middle, and bottom at three points along the length. Combine these into one composite sample of approximately 500 grams. Place the sample in a clean plastic bag and send it to a soil testing laboratory within 24 hours.

### Key Tests

**Nutrient analysis.** Request total N, P, K, calcium, magnesium, sulfur, and micronutrients. Results are reported as percent dry weight or parts per million.

**pH.** Finished compost should have a pH between 6.0 and 8.0. Goat manure compost tends to be slightly alkaline. If pH is above 8.0, the compost may not be fully mature.

**Salinity.** Electrical conductivity (EC) measures soluble salts. Goat manure compost can have high EC, especially if urine is included. EC above 5 millisiemens per centimeter may damage sensitive plants. Leaching compost with water before use can reduce salinity.

**Maturity tests.** A simple bioassay involves planting radish or cress seeds in a mixture of compost and potting soil. If germination is less than 80 percent of the control, the compost is not mature. Commercial laboratories offer respiration tests that measure microbial activity.

### Interpreting Results

Compare test results to crop nutrient requirements. For example, a soil test showing low phosphorus may justify a higher compost application rate. A study published in *Iop Conference Series Earth and Environmental Science* titled "Impact of giving vermicompost and goat manure compost to soil N, P, K nutrients, growth and production of mustard greens (Brassica juncea L.)" examined the impact of goat manure compost on soil nutrients and crop growth [12]. The research supports using compost analysis to guide application decisions.

## Field Application Rates

Apply compost at rates that match crop nutrient demand without exceeding soil capacity. Overapplication can cause nutrient runoff, groundwater contamination, and salt buildup.

### Calculating Application Rate

Use the formula:

Application rate (tons per acre) = (Crop N requirement in pounds per acre) / (Compost N content in percent x 20)

For example, if a crop requires 100 pounds of nitrogen per acre and compost contains 2 percent nitrogen:

100 / (2 x 20) = 2.5 tons per acre

This calculation assumes that 50 percent of the nitrogen in compost is available in the first year. The remaining nitrogen releases slowly over subsequent years.

### Timing

Apply compost in spring or fall when soil temperatures are above 10 degrees Celsius. Avoid application on frozen ground or during heavy rain. Incorporate compost into the top 4 to 6 inches of soil within 24 hours of application to reduce nitrogen loss.

### Crop-Specific Rates

**Pasture.** Apply 1 to 3 tons per acre annually. Split applications may be needed for heavy feeders.

**Vegetable gardens.** Apply 0.5 to 1 inch of compost (approximately 2 to 4 tons per acre) before planting. Mix into the top 6 inches of soil.

**Field crops.** Apply 2 to 5 tons per acre based on soil test results. Adjust for crop rotation and previous manure applications.

### Limitations

Compost is a low-analysis fertilizer. Meeting crop nitrogen requirements with compost alone may require large volumes that exceed phosphorus limits. For example, applying 5 tons per acre of 2 percent nitrogen compost provides 200 pounds of nitrogen but also adds phosphorus that may build up in soil over time. Monitor soil phosphorus levels annually.

## Records and Measurements

Maintain records of composting activities and field applications. Good records support nutrient management planning and regulatory compliance.

### Composting Records

For each batch of compost, record:

- Date of pile construction
- Volume or weight of manure and carbon materials
- C:N ratio of the mixture
- Turning dates and frequency
- Temperature readings (daily during active phase)
- Moisture content observations
- Date of compost maturity
- Laboratory test results

### Field Application Records

For each field application, record:

- Date of application
- Field name or number
- Crop to be grown
- Compost analysis results
- Application rate (tons per acre or cubic yards per acre)
- Method of incorporation
- Weather conditions at application

### Regulatory Considerations

Some jurisdictions require nutrient management plans for farms that apply manure or compost to land. Check with local agricultural authorities. The USDA Natural Resources Conservation Service provides technical assistance for developing nutrient management plans [2].

## Common Failure Patterns

### Ammonia Odor

Strong ammonia smell indicates excess nitrogen relative to carbon. Add more carbon material such as straw or wood shavings. Turn the pile to incorporate the carbon.

### Rotten Egg Odor

Sulfur smell indicates anaerobic conditions. The pile is too wet or too dense. Turn the pile to introduce oxygen. Add dry, coarse material to improve aeration.

### Low Temperature

If the pile does not heat up within 5 days, the C:N ratio may be too high (too much carbon) or too low (too much nitrogen). Test the C:N ratio and adjust. Dry piles also fail to heat. Add water to reach 50 percent moisture.

### Weed Growth on Pile

Weeds growing on the surface indicate that the pile did not reach high enough temperatures to kill weed seeds. Ensure the pile reaches 55 degrees Celsius for at least 3 days. Turn the pile to mix surface material into the hot center.

### Fly Infestation

Flies breed in fresh manure. Cover fresh material with a 2-inch layer of finished compost or straw. Turn the pile to bury fresh manure. Maintain proper C:N ratio to reduce attractiveness to flies.

## Safety and Biosecurity

### Worker Safety

Composting involves heavy lifting, machinery operation, and exposure to dust and microorganisms. Use personal protective equipment including gloves, dust masks, and safety glasses. Operate tractors and turners according to manufacturer instructions. Keep children and visitors away from active composting areas.

### Pathogen Reduction

Proper composting reduces pathogen levels. The Merck Veterinary Manual provides guidance on manure management and pathogen control [3]. Ensure the compost pile reaches 55 degrees Celsius for at least 3 consecutive days. Turn the pile to expose all material to high temperatures.

### Q Fever Considerations

Goat manure can carry *Coxiella burnetii*, the bacterium that causes Q fever. A study in *PloS one* titled "A probably minor role for land-applied goat manure in the transmission of Coxiella burnetii to humans in the 2007-2010 Dutch Q fever outbreak" found that land application of goat manure played a minor role in transmission [10]. However, composting reduces risk further. Pregnant women, immunocompromised individuals, and people with heart valve conditions should avoid contact with raw goat manure and active compost piles.

### [Food Safety](/knowledge/bacteria/livestock-bacteria/cooking-chicken-bacteria-prevention)

Apply compost at least 90 days before harvest for crops that grow close to the ground (carrots, lettuce, strawberries). For other crops, apply at least 60 days before harvest. These intervals allow any remaining pathogens to die off before human consumption.

## Professional Escalation Criteria

Consult a veterinarian, extension specialist, or soil scientist if any of the following occur:

- Unexplained illness in goats that may be linked to manure management
- Regulatory inspection or complaint related to manure storage or composting
- Soil test results showing excessive phosphorus or heavy metals
- Crop failure or poor growth after compost application
- Persistent odor complaints from neighbors
- Uncertainty about nutrient management plan requirements

The USDA Agricultural Research Service and USDA National Agricultural Library provide resources on animal health and welfare, including manure management guidance [1][5].

## Frequently Asked Questions

### How long does it take to compost goat manure?

Active composting takes 4 to 8 weeks for windrow systems and 8 to 16 weeks for static piles. After the active heating phase, allow 4 to 8 weeks of curing before field application. Total time from fresh manure to finished compost is 8 to 24 weeks depending on method and management.

### Can I compost goat manure with other livestock manure?

Yes. Goat manure can be mixed with cattle, sheep, or poultry manure. Adjust the C:N ratio based on the combined mixture. Poultry manure has higher nitrogen content and may require more carbon material. Cattle manure has a similar C:N ratio to goat manure and blends easily.

### What is the best carbon source for goat manure composting?

Straw is the most common carbon source because it is readily available on many farms. Wood shavings work well but decompose slowly. Dried leaves and corn stalks are good alternatives. Avoid treated wood products or materials contaminated with pesticides.

### How do I know when compost is ready to use?

Finished compost is dark brown or black, crumbly, and has an earthy smell. It should not resemble the original manure. The temperature of the pile should be near ambient air temperature. A simple test is to place a handful of compost in a sealed plastic bag for 24 hours. If the bag inflates, the compost is still active and needs more curing time.

### Can I use goat manure compost on vegetable gardens?

Yes. Goat manure compost is excellent for vegetable gardens. Apply 0.5 to 1 inch of compost before planting and mix into the top 6 inches of soil. Follow the 90-day application interval for crops that grow close to the ground.

### Does goat manure compost have a strong odor?

Properly managed compost has an earthy smell, not a manure odor. Ammonia or rotten egg odors indicate problems with C:N ratio or aeration. Correct these issues promptly to avoid odor complaints.

### How much compost will I get from my goat herd?

Compost volume is approximately 40 to 60 percent of the original manure volume. A goat producing 0.5 kilograms of manure per day yields about 180 kilograms per year. For a herd of 50 goats, that is 9,000 kilograms of raw manure annually, which produces 3,600 to 5,400 kilograms of compost.

### Can I sell goat manure compost?

Yes. Many farmers sell compost to gardeners, landscapers, and nurseries. Check local regulations for compost sales. Provide customers with a nutrient analysis and application guidelines. Price compost based on nutrient content, packaging, and local market conditions.

## Related Farming Guides

- [Rotational Browsing And Grazing For Goats](/knowledge/animal-farming/goats/rotational-browsing-and-grazing-for-goats)
- [Marketing Goat Meat Milk And Fiber Within Local Rules](/knowledge/animal-farming/goats/marketing-goat-meat-milk-and-fiber-within-local-rules)
- [Dairy Cattle Farming Nutrition Housing Health Signals And Herd Management](/knowledge/animal-farming/dairy-cattle/dairy-cattle-farming-nutrition-housing-health-signals-and-herd-management)
- [Predator Management For Goat Farms Prevention And Documentation](/knowledge/animal-farming/goats/predator-management-for-goat-farms-prevention-and-documentation)
- [Goat Breed Selection For Dairy Meat Fiber And Brush Control](/knowledge/animal-farming/goats/goat-breed-selection-for-dairy-meat-fiber-and-brush-control)

## 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 and Further Reading

- [www.ars.usda.gov](https://www.ars.usda.gov/)
- [www.nrcs.usda.gov](https://www.nrcs.usda.gov/)
- [www.merckvetmanual.com](https://www.merckvetmanual.com/management-and-nutrition)
- [FAO Animal Production and Health](https://www.fao.org/animal-production/en). Food and Agriculture Organization of the United Nations.
- [Animal Health and Welfare](https://www.nal.usda.gov/animal-health-and-welfare). USDA National Agricultural Library.
- [Effects of turning frequency on the nutrients of Camellia oleifera shell co-compost with goat dung and evaluation of co-compost maturity.](https://pubmed.ncbi.nlm.nih.gov/31557206). PloS one, 2019.
- [Optimizing cattle and goat manure quality to improve fertility status of fragile soils in semi-arid agrozone of Samburu County, Kenya.](https://pubmed.ncbi.nlm.nih.gov/41454206). Environmental science and pollution research international, 2026.
- [Effect of Microbial Inoculation on Carbon Preservation during Goat Manure Aerobic Composting.](https://pubmed.ncbi.nlm.nih.gov/34361594). Molecules (Basel, Switzerland), 2021.
- [Effect of micronutrient selenium on greenhouse gas emissions and related functional genes during goat manure composting.](https://pubmed.ncbi.nlm.nih.gov/35131460). Bioresource technology, 2022.
- [A probably minor role for land-applied goat manure in the transmission of Coxiella burnetii to humans in the 2007-2010 Dutch Q fever outbreak.](https://pubmed.ncbi.nlm.nih.gov/25816149). PloS one, 2015.
- [Role of selenite on the nitrogen conservation and greenhouse gases mitigation during the goat manure composting process.](https://pubmed.ncbi.nlm.nih.gov/35550906). The Science of the total environment, 2022.
- [Impact of giving vermicompost and goat manure compost to soil N, P, K nutrients, growth and production of mustard greens ( Brassica juncea L.)](https://doi.org/10.1088/1755-1315/1302/1/012008). Iop Conference Series Earth and Environmental Science, 2024.
- [Test of Physical Quality Compost and PH of Combination of Water Hyacinth (Eichornia Crassipes Mart. Solm) and Goat Manure Using Rument Liquid Mol as Activator](https://doi.org/10.1088/1755-1315/810/1/012003). Iop Conference Series Earth and Environmental Science, 2021.
- [Nutrient content and greenhouse gas emissions of goat manure compost processed without and with decomposer](https://doi.org/10.1088/1755-1315/648/1/012113). Iop Conference Series Earth and Environmental Science, 2021.

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