# Farm Pasture Assessment and Grazing Records ## Key Takeaways - **Integrated Assessment Framework:** Effective pasture management necessitates a cyclical process of observation (forage biomass, botanical composition, sward condition), interpretation of data within the stocking context (animal demand, paddock area), decision-making (grazing duration, rest periods), and meticulous documentation of all activities and observations. - **Forage Biomass and Quality Dynamics:** Sward height, leaf-to-stem ratio, species composition, and growth stage are critical indicators of available forage biomass and nutritional quality; vegetative stages offer higher crude protein and digestibility than reproductive stages, necessitating allocation to animals with higher nutrient demands. - **Stocking Rate and Residual Height Management:** Matching animal numbers and class to forage supply requires calculating paddock carrying capacity based on dry matter intake and maintaining a species-specific residual height (typically 5-10 cm for temperate grasses) to prevent overgrazing, which impairs regrowth and increases enteric disease transmission risk due to higher fecal pathogen loading. - **Rest Periods for Plant Persistence:** Adequate rest periods (14-60+ days depending on growth rate, season, and species) are crucial for plant regrowth and root reserve recovery, preventing depletion that leads to weed encroachment and reduced total seasonal yield; farms utilizing formal rest rotation systems report fewer metabolic disorders. - **Soil and Water Protection Imperatives:** Wet soil is highly susceptible to pugging and compaction, reducing infiltration and increasing runoff; maintaining riparian buffers and observing hoof impact on watercourses are essential to prevent erosion and contamination of water sources with pathogens like *E. coli* O157 and *Cryptosporidium parvum*. - **Grazing Records as a Decision Support Tool:** Comprehensive grazing records, including entry/exit dates, animal numbers, paddock observations, and health incidents, enable retrospective analysis of stocking decisions, inform future planning, and are vital for biosecurity compliance with organizations like WOAH and FAO. --- Pasture assessment is the systematic evaluation of forage biomass, botanical composition, and sward condition to determine grazing readiness, carrying capacity, and recovery intervals within a livestock production system. Accurate, repeatable pasture assessments combined with structured grazing records enable farmers and animal-health professionals to match forage supply with animal demand, protect soil and water resources, and maintain compliance with animal health and welfare standards outlined by organisations such as the World Organisation for Animal Health (WOAH) and the Food and Agriculture Organization (FAO). ## At a Glance | Component | Purpose | Key Observation Points | |-----------|---------|------------------------| | Forage observation | Quantify available biomass and nutritional quality | Sward height, leaf-to-stem ratio, species composition, growth stage | | Stocking context | Match animal numbers and class to forage supply | Animal body weight, daily dry matter intake, paddock area | | Rest periods | Allow plant regrowth and root reserve recovery | Growth rate, season, species recovery requirement | | Soil and water protection | Maintain infiltration, reduce compaction, prevent erosion | Soil moisture, hoof impact, riparian buffer condition | | Weather | Adjust timing of grazing and rest for plant and animal health | Temperature, precipitation, frost, drought indicators | | Grazing records | Document decisions for future planning and audit | Entry/exit dates, animal numbers, paddock observations, body condition | ### System Context and Planning Decisions Pasture assessment does not exist in isolation, it operates within a broader production system that includes animal genetics, health status, nutrition, reproductive management, and environmental constraints. The WOAH Terrestrial Animal Health Code emphasises that grazing management must be part of a documented biosecurity plan, particularly when managing shared or common grazing areas where disease transmission risks increase with stocking density. The FAO Animal Production and Health guidance reinforces that pasture planning should account for the lactation cycle, growth phase of young stock, and the body condition targets for breeding animals. Planning decisions begin with an understanding of the farm’s soil types, pasture species, and climate patterns. Soil properties, including texture, organic matter, and drainage, influence both forage productivity and the microbial communities that support nutrient cycling. Bacterial and fungal community structures vary significantly with land-use type, pasture soils under continuous grazing often show reduced fungal diversity compared to those under rotational or rest-based systems. This microbial shift can affect decomposition rates, nutrient availability, and ultimately forage quality. Therefore, pasture assessment should include periodic soil observation to detect changes in compaction, surface crusting, or waterlogging before they limit production. ### Core Management Framework The core framework for pasture assessment and grazing records is built on four linked activities: observation, interpretation, decision, and documentation. Each activity supports the others, and omission of any step weakens the ability to adjust management in response to changing conditions. Observation is the foundation. Forage observation includes visual estimation and physical measurement. Sward height measured with a rising plate meter or ruler provides a proxy for biomass when calibrated to the local pasture mix. Botanical composition should be recorded at least once per grazing rotation to track the balance between desirable perennial grasses and legumes versus weeds or unpalatable species. Nutritional quality changes with growth stage, vegetative forage has higher crude protein and digestibility than reproductive-stage forage. Observing the growth stage across paddocks allows managers to allocate high-quality swards to animals with higher nutrient demands, such as lactating cows or growing lambs. Stocking context involves calculating the number of animal-days a paddock can support before forage is grazed below the recommended residual height. Residual height is species-specific but generally ranges from 5 to 10 cm for temperate perennial grasses. Grazing below this residual can slow regrowth and reduce total seasonal yield. The USDA Animal and Plant Health Inspection Service (APHIS) livestock and poultry disease guidance notes that overstocking also damages pasture but increases faecal pathogen loading on swards, raising the risk of enteric disease transmission. Therefore, stocking decisions must integrate forage supply with animal health risk. Rest periods are the primary tool for maintaining pasture persistence and productivity. The length of rest required depends on plant growth rate, which varies with temperature, moisture, and season. In active growth periods, rest may be as short as 14 to 21 days. During slow growth, rest may extend beyond 60 days. The effect of rest on root carbohydrate reserves is well documented, repeated close grazing without adequate recovery depletes these reserves and reduces plant vigour, leading to weed encroachment and bare soil patches. USDA National Animal Health Monitoring System (NAHMS) data indicate that farms using a formal rest rotation system report fewer cases of metabolic disorders in grazing animals, possibly because consistent forage quality reduces nutritional stress. Soil and water protection requires direct observation during and after grazing events. Wet soil is vulnerable to pugging and compaction, which reduces infiltration and increases runoff. Paddocks should be inspected for signs of animal impact on watercourses, and riparian buffers should be maintained according to recommended setback distances. The WOAH code includes standards for maintaining clean water access for livestock, as contaminated surface water is a vehicle for pathogens such as Escherichia coli O157 and Cryptosporidium parvum. Weather records are essential context for interpreting pasture growth and animal performance. A severe weather event such as a late frost, hail, or drought can reduce forage availability by 50 percent or more within a week, requiring immediate adjustment of stocking rate or provision of supplementary feed. Longer-term climate trends, including shifts in seasonal rainfall timing and intensity, influence which pasture species are viable and whether alternative species or varieties should be considered as part of a resilience strategy. Grazing records unify all of the above observations into a usable history. Minimum records for each paddock include entry and exit dates, number and class of animals, observed sward height or biomass estimate, any health incidents, and weather notes. Records allow retrospective analysis of whether stocking decisions were conservative enough to maintain pasture cover through dry periods or whether they exposed paddocks to erosion risk. The FAO livestock management guidance recommends that records be reviewed at the end of each grazing season to inform adjustments to the following year’s grazing plan. ## Forage Observation and Assessment Techniques Systematic forage observation forms the foundation of pasture assessment. Visual estimation of sward height, density, and species composition provides immediate data on available biomass and nutritional quality. [FAO Animal Production and Health guidance](https://www.fao.org/animal-production/en/) emphasizes that regular walking of paddocks allows detection of patch grazing, weed encroachment, and early signs of overuse. Forage quality varies with phenological stage: vegetative growth offers higher digestibility and protein than reproductive stages. Producers must account for this when matching forage supply to animal nutrient demands. Soil properties influence forage productivity and botanical diversity. Research on land-use types shows that soil microbial community structure correlates with plant species distribution, affecting pasture resilience [The influence of soil properties on the structure of bacterial and fungal communities](https://api.elsevier.com/content/abstract/scopus_id/49249124904). Therefore, soil sampling and texture analysis should accompany forage observation to understand underlying constraints. When assessing pasture, record also height but also uniformity, leaf-to-stem ratio, and presence of unpalatable species. Use of rising plate meters or pasture sticks improves objectivity, although operator consistency remains important. For precise nutritional assessment, laboratory analysis of clipped samples is advisable, especially for lactating or growing animals with high energy demands. Uncertainty increases in mixed-sward pastures, in such cases, consult an agronomist or livestock nutritionist to interpret results. ## Stocking Context and Production Stage Decisions Stocking rate and animal class directly affect pasture utilization and regrowth. The [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) recommends that stocking density be adjusted to prevent soil degradation and disease transmission. High stocking rates increase fecal contamination and parasite load, while low rates allow selective grazing and weed dominance. Production stage decisions require matching feed quality with physiological needs. The [Merck Veterinary Manual](https://www.merckvetmanual.com/) outlines nutrient requirements for beef cows, ewes, and does during gestation, lactation, and growth. For example, late-lactation dairy cows need dense, high-energy pasture, dry cows can utilize lower-quality forage. Grazing records that track animal weight gain, body condition score, and milk yield help adjust stocking in real time. Producers should separate animals by production stage to meet specific nutritional needs without over- or undergrazing. Escalate to a veterinarian or animal scientist if animals fail to meet performance targets despite adequate forage quantity. ## Rest Periods and Regrowth Management Rest periods allow pasture plants to replenish carbohydrate reserves and maintain vigor. [FAO livestock management guidance](https://www.fao.org/animal-production/en/) advises that rest duration depends on species, season, and soil moisture. Cool-season grasses recover faster than warm-season grasses, legumes need longer rest after flowering. A general approach is to remove animals when forage height reaches a predetermined residual (e.g., 3,4 cm for ryegrass) and allow regrowth to reach target height (e.g., 10,12 cm) before regrazing. The [Resilience assessment of a pasture management system in northern Afghanistan](https://api.elsevier.com/content/abstract/scopus_id/84862007519) illustrates how rigid rest schedules can fail under variable conditions, leading to system collapse. Flexible rest based on real-time growth rates, adjusted using weather forecasts, improves resilience. Pasture records should document entry and exit dates, rest length, and observed regrowth. When rest periods produce inadequate recovery, investigate soil moisture, fertility, or weed competition. Consult a pasture specialist if persistent decline occurs. ## Soil and Water Protection Pasture management directly impacts soil structure and water quality. Overgrazing compacts soil, reduces infiltration, and increases runoff. [USDA APHIS livestock disease guidance](https://www.aphis.usda.gov/livestock-poultry-disease) highlights that muddy conditions predispose livestock to lameness and foot rot. Maintaining adequate stubble height protects soil surface from raindrop impact and drying. Riparian areas require special attention: exclude livestock or limit access to prevent bank erosion and nutrient loading. The [Harmonization of land-use scenarios](https://api.elsevier.com/content/abstract/scopus_id/80053899253) underscores that historical land conversion from pasture to cropland has altered hydrology and carbon storage. Grazing records that include soil moisture observations, rainfall amounts, and erosion events support adaptive management. Install fencing to create buffer zones along streams and springs. If erosion rills or gullies develop, stop grazing that paddock and implement restoration. For water supply, test troughs and streams regularly for contamination. The [USDA National Animal Health Monitoring System](https://www.aphis.usda.gov/livestock-poultry-disease/nahms) provides protocols for water quality monitoring in livestock operations. ## Weather and Climate Considerations Weather variability is the primary driver of pasture growth. The [Adapting agriculture to climate change](https://api.elsevier.com/content/abstract/scopus_id/38049117743) study emphasizes that farmers need flexible grazing plans to cope with droughts and heavy rainfall. Pasture assessment records should include daily or weekly temperature and precipitation data. Using simulation models such as [APSIM](https://api.elsevier.com/content/abstract/scopus_id/0037232266) helps predict growth under different weather scenarios, but ground observation remains essential. When drought reduces forage availability, reduce stocking rate or provide supplemental feed to protect pasture root reserves. Conversely, during wet periods, avoid grazing when soil is saturated to prevent pugging and compaction. Grazing records that link weather events to pasture condition provide a valuable dataset for future planning. If climate projections indicate increased variability, consult extension specialists to adjust species selection and grazing infrastructure. ## Grazing Records and Monitoring Systems Records are the backbone of pasture management. A comprehensive system documents paddock identification, area, forage type, entry and exit dates, animal numbers, body condition scores, health events, and observed pasture condition. The [WOAH standards](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) recommend tracking animal movements to facilitate disease traceability. The [USDA NAHMS](https://www.aphis.usda.gov/livestock-poultry-disease/nahms) provides sample data collection forms for livestock operations. Records also enable evaluation of rest period effectiveness and identification of persistent problem paddocks. Monthly summaries of grazing days, rest days, and forage height trends highlight anomalies. Use of digital tools (spreadsheets, farm management software) reduces error, but paper records are acceptable if consistently maintained. Escalate to a veterinarian or animal health official if records show unexplained clusters of illness, lameness, or poor performance linked to a specific paddock. Records serve as legal documentation for [food safety](/knowledge/bacteria/livestock-bacteria/cooking-chicken-bacteria-prevention) audits and certification programs. ## Welfare, Worker Safety, and Food Safety Pasture conditions influence animal welfare and worker safety. Animals require access to shade, shelter, and clean water, especially during extreme weather. Include these elements in pasture assessment. Overcrowding leads to aggression and injury. The [Merck Veterinary Manual](https://www.merckvetmanual.com/) provides guidelines for space allowances in various production systems. Worker safety involves safe handling facilities, well-maintained fencing, and avoidance of steep, slippery terrain. Records of repairs and hazards reduce accident risk. For food safety, pastures must not contain foreign objects, toxic plants, or chemical residues. The [FAO guidance](https://www.fao.org/animal-production/en/) addresses contamination risks from manure and soil. Water sources near pastures should be tested for pathogens and nitrates. Grazing records that document applications of fertilizer, manure, or herbicides support withdrawal periods and audit compliance. If a food safety concern arises, notify the relevant regulatory authority and veterinarian. ## Failure Patterns and Problem Identification Failure patterns emerge when pasture assessment and records are neglected. Common failures include overgrazing (diminished regrowth, soil exposure, weed invasion), undergrazing (rank growth, reduced quality, fire hazard), and nutrient imbalances (poor animal performance, off-target plant species). The resilience literature [Resilience: A Bridging Concept](https://api.elsevier.com/content/abstract/scopus_id/84862007519) warns that repeated mismanagement can lock a system into a degraded state. Monitoring records reveal trends before acute problems occur. For example, declining average body condition scores across multiple groups may signal inadequate forage quality or quantity. Elevated [somatic cell](/blog/guides/somatic-cell) counts may relate to muddy conditions or long intervals between grazing and milking. Failure patterns also include parasite burdens that spike when pastures are grazed too young or without sufficient rest. If records suggest a pattern, diagnose through fecal egg counts or soil tests. Escalate to a veterinary parasitologist or pasture ecologist when management changes do not correct the trend. ## Practical Monitoring Protocols Practical monitoring integrates the above elements into a weekly or biweekly routine. Walk representative transects across each paddock. Record forage height, approximate species composition, and signs of damage (trampling, trailing defecation, erosion). Note animal behavior: Are they grazing uniformly? Are they congregating near water or shelter? Use a simple score from 1 to 5 for pasture condition (1 = severely degraded, 5 = ideal). Compare scores over time. Record rainfall and temperature from a nearby station. Enter data into a grazing diary or spreadsheet each day or week. At month end, review stocking days per paddock, rest periods, and any health events. Adjust grazing plan accordingly. When data are incomplete or contradictory, involve a professional such as an extension livestock specialist, agronomist, or veterinarian. Regular discussion of records with advisors builds institutional memory and supports adaptive management. ## Health Observation During Pasture Assessment Regular health observation is integral to pasture assessment. Livestock producers should evaluate body condition score, fecal consistency, and signs of lameness when animals are at pasture. The [Merck Veterinary Manual](https://www.merckvetmanual.com/) emphasizes that changes in grazing behavior often precede clinical disease. Animals that isolate themselves, fail to rise during routine inspections, or show reduced feed intake warrant immediate attention. Fecal samples can be collected during pasture visits to monitor gastrointestinal nematode burdens, the [USDA National Animal Health Monitoring System](https://www.aphis.usda.gov/livestock-poultry-disease/nahms) provides national-level data on parasite prevalence in grazing herds. Observation of pasture cleanliness is equally important. Accumulation of manure in loafing areas or near water sources increases exposure to pathogens such as *Escherichia coli* O157 and *Cryptosporidium* species. The [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) outlines standards for maintaining sanitary conditions in grazing environments to reduce disease transmission. ## Biosecurity in Grazing Systems Biosecurity measures must extend to pasture management. Fencing that prevents contact with neighboring livestock and wildlife reduces the risk of disease introduction. The [FAO Animal Production and Health](https://www.fao.org/animal-production/en/) guidance recommends that producers establish quarantine paddocks for new or returning animals before they join the main herd. These isolation pastures should be monitored for at least 14 to 21 days, depending on the disease risk profile of the region. Manure management on pasture is a biosecurity concern. Rotational grazing systems that allow long rest periods reduce pathogen load in the soil and forage. Research included in [PubMed record 42409987](https://pubmed.ncbi.nlm.nih.gov/42409987/) indicates that soil microbial communities recover more rapidly under rotational grazing compared to continuous stocking, potentially suppressing plant pathogens and improving forage quality. Water sources on pasture,whether streams, ponds, or troughs,require regular inspection for contamination by livestock or wildlife. The [USDA APHIS Livestock and Poultry Disease](https://www.aphis.usda.gov/livestock-poultry-disease) resources highlight that waterborne pathogens such as *Leptospira* and *Salmonella* can persist in grazing environments and cause herd outbreaks. ## Diagnostic and Veterinary Escalation Pasture assessment findings that deviate from expected norms should trigger diagnostic investigation. Veterinary involvement is warranted when multiple animals exhibit weight loss despite adequate forage availability, when diarrhea is present in more than 10% of the group, or when lameness affects more than 5% of the herd. The [Merck Veterinary Manual](https://www.merckvetmanual.com/) advises that fecal egg count reduction tests can evaluate anthelmintic efficacy and guide deworming decisions. In cases where pasture quality is suspect, laboratory analysis of forage samples for nutrient content and mycotoxins is prudent. Soil testing for mineral imbalances, particularly cobalt, copper, and selenium, can explain poor production or fertility problems. The [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) specifies that diagnostic laboratories should meet international standards to ensure reliable results. Producers should maintain a written relationship with a veterinary practitioner who can visit the pasture periodically and review health records. ## Uncertainty in Pasture Assessment Pasture assessment involves inherent uncertainty. Visual estimation of forage biomass can be inaccurate, leading to overstocking or understocking. Weather variability, as discussed in the article [Adapting agriculture to climate change](https://api.elsevier.com/content/abstract/scopus_id/38049117743), complicates predictions of regrowth rates and residual dry matter. Producers must recognize that pasture condition can change rapidly after a heavy rainfall or drought. The concept of resilience in pasture management, explored in [Resilience: A Bridging Concept or a Dead End?](https://api.elsevier.com/content/abstract/scopus_id/84862007519), suggests that flexible grazing strategies,such as adjusting stocking density weekly,can buffer against environmental fluctuations. When uncertainty is high, conservative stocking levels and longer rest periods are advisable. Professional escalation to an agricultural extension specialist or [veterinary nutritionist](/blog/careers/becoming-a-veterinary-nutritionist-education-certification-and-practice) can help interpret soil test results, forage analyses, and animal performance data. Veterinarians should be consulted when health problems do not respond to standard treatments or when unexplained production losses persist. ## Sustainability of Grazing Practices Sustainable pasture management integrates animal health, soil protection, and long-term productivity. Rotational grazing with adequate rest periods enhances soil organic matter and water infiltration, supporting forage persistence. The study [The influence of soil properties on the structure of bacterial and fungal communities across land-use types](https://api.elsevier.com/content/abstract/scopus_id/49249124904) demonstrates that land-use intensity directly affects soil microbial diversity, which in turn influences nutrient cycling and plant health. Pasture management that maintains a diverse sward,mixing grasses, legumes, and forbs,can improve resilience to pests and climate stress. The [FAO Animal Production and Health](https://www.fao.org/animal-production/en/) guidelines emphasize that sustainable grazing also requires monitoring of water quality in adjacent streams and groundwater. Livestock exclusion from riparian areas, provision of alternative water sources, and controlled access to sensitive habitats are practical steps. Simulation modeling, such as the APSIM framework described in [An overview of APSIM, a model designed for farming systems simulation](https://api.elsevier.com/content/abstract/scopus_id/0037232266), can assist producers in evaluating long-term trade-offs between stocking rate, pasture health, and economic returns. Sustainability also implies preparedness for changing climatic conditions. The land-use scenarios reviewed in [Harmonization of land-use scenarios for the period 1500,2100](https://api.elsevier.com/content/abstract/scopus_id/80053899253) indicate that pasture systems must adapt to shifts in growing season length and precipitation patterns. Producers should maintain detailed grazing records to document adaptive management decisions and outcomes over multiple years. ## Frequently Asked Questions **1. How often should pasture condition be formally assessed?** At least every 14 days during the growing season, with more frequent checks during periods of rapid growth, drought, or after introducing a new group of animals. Visual inspection can be supplemented with rapid forage measurement tools. **2. What are the first signs that a pasture is overgrazed?** Close-cropped forage, visible soil between plants, weeds, and animals that are still hungry after a full day of grazing. Reduced animal weight gain or declining body condition scores also indicate insufficient forage availability. **3. Is soil testing necessary for pasture management?** Yes. Soil pH, phosphorus, potassium, and trace mineral levels directly affect forage quality and animal health. Testing every two to three years helps guide fertilizer and lime applications. The [Merck Veterinary Manual](https://www.merckvetmanual.com/) recommends testing before establishing new pastures or when unexplained production problems occur. **4. How long should a grazing rest period be?** A typical rest period is 21 to 40 days during active growth, but this varies with plant species, climate, and season. The goal is to allow sufficient leaf area for regrowth before the next grazing event. Consult local extension recommendations for your region. **5. What biosecurity measures apply to communal or rented pastures?** Ensure that all animals have up-to-date vaccinations and health testing. Fence off buffer zones from neighboring herds. Quarantine new arrivals for a minimum of 14 days in a dedicated paddock before mixing with the main herd. **6. How can drought affect pasture and animal health?** Drought reduces forage quantity and crude protein content, increases plant toxins such as nitrates, and concentrates fecal pathogens in remaining water sources. Early intervention with supplemental feed and water testing is essential. **7. What records are critical for pasture and herd health management?** Stocking dates and numbers, rotational moves, pasture condition scores, body condition scores, fecal egg counts, veterinary visits, and weather observations. These records support evidence-based adjustments. **8. When should a veterinarian be involved in pasture management?** If three or more animals show weight loss, diarrhea, lameness, or respiratory signs, if sudden death occurs, if fecal egg counts do not respond to deworming, or if forage quality is suspected to cause metabolic disorders. Veterinary involvement is also recommended when designing a new herd health plan. --- **Educational Veterinary Notice** This article provides general guidance for pasture assessment and grazing records. It does not replace a complete herd health program developed with a licensed veterinarian. Each farm faces unique conditions regarding climate, soil, forage species, and disease risks. Producers should work with their veterinarian to establish routine examinations, diagnostic testing protocols, and emergency response plans. Regular consultation with a veterinary professional is essential for the welfare of livestock and the long-term sustainability of grazing operations. ## Related Farming Guides - [How To Write A Farm Biosecurity Plan](/knowledge/animal-farming/farm-management/how-to-write-a-farm-biosecurity-plan) - [Livestock Farm Record Keeping System](/knowledge/animal-farming/farm-management/livestock-farm-record-keeping-system) - [Livestock Emergency Preparedness Plan](/knowledge/animal-farming/farm-management/livestock-emergency-preparedness-plan) - [Farm Health Intelligence Observation Records Biosecurity Diagnostics And Veterinary Escalation](/knowledge/animal-farming/farm-management/farm-health-intelligence-observation-records-biosecurity-diagnostics-and-veterinary-escalation) - [Animal Welfare Audits Building A Useful Farm Program](/knowledge/animal-farming/farm-management/animal-welfare-audits-building-a-useful-farm-program) ## Related Clinical & Scientific Guides * [Animal Welfare Audits: Building a Useful Farm Program](/knowledge/animal-farming/farm-management/animal-welfare-audits-building-a-useful-farm-program) * [Total Mixed Ration (TMR) for Dairy: Mixing and Feeding Management](/knowledge/animal-farming/farm-management/total-mixed-ration-dairy-mixing-feeding) * [Feed Additives for Livestock: Probiotics, Enzymes, and More](/knowledge/animal-farming/farm-management/feed-additives-livestock-probiotics-enzymes) ## References and Further Reading - [FAO Animal Production and Health](https://www.fao.org/animal-production/en/) - [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) - [USDA APHIS Livestock and Poultry Disease](https://www.aphis.usda.gov/livestock-poultry-disease) - [Merck Veterinary Manual](https://www.merckvetmanual.com/) - [USDA National Animal Health Monitoring System](https://www.aphis.usda.gov/livestock-poultry-disease/nahms) > This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.