Livestock Disease Reporting in New Mexico: Rules Every Owner Needs to Know
August 24, 2026
New Mexico’s livestock industry spans millions of acres of rangeland, and a single unreported disease outbreak can ripple across the entire state in a matter of days. Whether you raise cattle, sheep, horses, or poultry, understanding your legal obligations under the New Mexico Livestock Board’s reporting rules is not optional — it is a core part of operating in this state.
This guide walks you through every aspect of livestock disease reporting in New Mexico: which diseases trigger a mandatory report, who is legally required to file one, how to submit it, what deadlines apply, and what consequences follow if you do not comply.
Reportable Livestock Diseases in New Mexico
New Mexico’s reportable disease framework is built on two regulatory layers. The first covers “exotic pests of significant economic impact,” defined under 21.30.4 NMAC as any disease of significant economic impact to the livestock industry or public health. The second is a specific enumerated list established under 21.30.4.9 NMAC.
In addition to the diseases listed in 21.30.4.8 NMAC, the following diseases and conditions are considered to be of significant economic impact and when discovered or diagnosed are to be immediately reported to the New Mexico livestock board’s state veterinarian. This list is organized by condition type and species.
Reportable Conditions (All Species)
Certain clinical presentations trigger a reporting obligation regardless of the specific diagnosis. Reportable conditions include: any disease of unusual morbidity or mortality that does not fit a normally expected clinical picture; any condition suspected of being a foreign or emerging animal disease, or possible bioterrorism.
Additional reportable conditions include: any disease condition in livestock exhibiting vesicular lesions; undiagnosed neurologic, mucosal, and hemorrhagic conditions; and contamination by toxic substances, including unexplained increase in aflatoxin, botulism, or T2 toxin.
Reportable Diseases by Species Category
Reportable diseases include any disease listed as notifiable by the USDA or OIE, including but not limited to diseases of significance to public health and zoonoses. The regulation then further organizes additional diseases into species-specific categories covering general livestock, equines, and poultry. You can review the full enumerated list at the Legal Information Institute’s version of N.M. Admin. Code § 21.30.4.9.
| Species Category | Examples of Reportable Diseases | Reporting Authority |
|---|---|---|
| General Livestock | Foot-and-mouth disease, brucellosis, bovine tuberculosis, anthrax, vesicular stomatitis | NMLB State Veterinarian |
| Equines | Equine infectious anemia (EIA), equine viral arteritis (EVA), equine piroplasmosis | NMLB State Veterinarian |
| Livestock (Zoonotic) | Rabies, brucellosis, dermatophilosis (club lamb disease), other fungal diseases with zoonotic potential | NMLB + NM Dept. of Health |
| Poultry | Highly pathogenic avian influenza, Newcastle disease, psittacosis | NMLB + NM Dept. of Health* |
Diseases of concern to poultry include psittacosis, which must be reported to the New Mexico Department of Health; if occurring in livestock, also notify the New Mexico Livestock Board.
For equines specifically, clinical disease due to EVA infection is a reportable disease to the New Mexico state veterinarian. Equine viral arteritis (EVA) is an infectious contagious disease of horses caused by the equine arteritis virus (EAV), which is of special economic concern because it can result in abortion in pregnant mares, illness and death in young foals, and the establishment of the carrier state in stallions. For more on bovine diseases that may carry reporting obligations, including brucellosis and tuberculosis, those resources can help you understand what to watch for in cattle herds.
Who Is Required to Report a Livestock Disease in New Mexico
New Mexico law casts a wide net when it comes to who bears the legal duty to report. The obligation does not rest solely on veterinarians — it extends to owners, handlers, and anyone with care or custody of animals.
Under Section 77-3-2 NMSA 1978, a person who has in his possession or under his care any livestock that he knows or has reason to believe is affected with a disease shall without unnecessary delay tell the board or some member of the board or the sheriff of the county in which the livestock is situate. The sheriff shall immediately notify the director.
For sheep and goat owners specifically, the statute is equally direct: a person who owns or has under his control sheep or goats that have been exposed to or infected with a reportable disease shall forthwith report such fact to the director.
The regulations also define who falls under the general scope of NMLB rules. The scope covers all owners, transporters, or handlers of livestock in the state of New Mexico and those that apply to bring livestock into the state for any reason. Under that same regulatory framework, “livestock or animal” means cattle, sheep, swine, bison, goats, horses, mules, asses, poultry, ratites, camelids, and farmed cervidae.
If you manage livestock that crosses state lines, your obligations multiply. Owners of livestock temporarily entering New Mexico are urged to contact their state animal health officials for requirements and restrictions to return to their home state from New Mexico. Producers who operate in neighboring states should also review livestock disease reporting requirements in Colorado and California’s livestock disease reporting rules to ensure full multi-state compliance.
Signs and Symptoms That Trigger a Report in New Mexico
You do not need a confirmed laboratory diagnosis to be required to report. New Mexico’s regulations deliberately use broad clinical language so that suspected disease events are captured early — before an outbreak can spread.
General Warning Signs Across All Species
- Unexplained mass illness or death affecting multiple animals simultaneously
- Mortality or morbidity rates that are abnormally high for the species or season
- Vesicular (blister-like) lesions on the mouth, feet, teats, or tongue
- Undiagnosed neurologic signs such as circling, seizures, or sudden blindness
- Hemorrhagic (bleeding) conditions without a clear traumatic cause
- Mucosal lesions or erosions in the mouth or nasal passages
- Suspected exposure to toxic substances, including aflatoxin or botulism
The regulation is explicit: any disease of unusual morbidity or mortality that does not fit a normally expected clinical picture is a reportable condition. This means your subjective judgment that something looks “wrong” is enough to trigger the duty to report.
Species-Specific Signs to Watch For
Cattle and small ruminants: Watch for sudden drop in milk production, excessive salivation, lameness in multiple animals, or blistering around the hooves or muzzle — all classic signs associated with foot-and-mouth disease and vesicular stomatitis. New Mexico periodically experiences incidents of vesicular stomatitis virus (VSV), an important vector-borne viral disease that affects multiple species of animals, and incidents of VSV in the state impact movement of livestock from specific premises, the state, and the country.
Equines: Sudden fever, nasal discharge, abortion in mares, or unexplained anemia all warrant immediate attention. Equine infectious anemia (EIA) is an infectious disease of equines caused by a lentivirus, equine infectious anemia virus (EIAV). The infection is characterized by three distinct forms: acute, chronic (both associated with clinical signs of disease), and inapparent. The inapparent form is particularly dangerous because affected animals show no outward signs but can still transmit the disease.
Poultry: Sudden death in flocks, respiratory distress, drop in egg production, swelling of the head or wattles, or neurologic signs in birds can indicate highly pathogenic avian influenza or Newcastle disease, both of which are reportable. If you raise pet or exotic birds alongside commercial poultry, be aware that psittacosis carries a dual reporting obligation to both the NMLB and the New Mexico Department of Health.
When Exposure Alone Triggers Reporting
You do not need to see clinical signs in your own animals to have a reporting obligation. If your livestock have been in contact with animals from a known disease premises, or if you have reason to believe they were exposed during transport or at a sale yard, that exposure itself may require notification. The state veterinarian has authority to stop movement of certain livestock because of the possibility those livestock are diseased or exposed to a contagious disease, but the disease has not been confirmed in those livestock.
How to Report a Livestock Disease in New Mexico
Reporting a livestock disease in New Mexico goes through the New Mexico Livestock Board, which also houses the Office of the State Veterinarian. The New Mexico Livestock Board includes the offices of the State Veterinarian, whose team of veterinarians collaborate with various government and private sector partners to ensure that our state remains free of diseases affecting livestock.
Primary Contact Methods
- Phone (main NMLB office): Call 505-841-6161, available Monday through Friday, 8:00 a.m. to 4:30 p.m. Mountain Time. The main office is open for business each day that state offices are open, from 8:00 a.m. until 4:30 p.m., remaining open through the noon hour unless otherwise announced.
- After-hours or emergency reports: For urgent disease events outside normal office hours, contact the NMLB emergency line or the county sheriff, who is legally required to immediately notify the NMLB director.
- In person: The NMLB main office is located at 300 San Mateo NE, Suite 1000, Albuquerque, New Mexico.
- Through your accredited veterinarian: If your veterinarian is already involved, they can initiate the report directly to the State Veterinarian’s office on your behalf — though this does not relieve you of your own reporting obligation if you have independent knowledge of the disease.
The NMLB also maintains an online portal and email notification system. When there are any developments such as a disease event which may affect the import or export of livestock, these are communicated on the NMLB’s “What’s Hot” page, which also offers a way to sign up to receive email notifications. Signing up for those alerts is a practical step for any New Mexico livestock operator.
What Information to Have Ready
When you call to report, having organized information speeds up the process and helps the state veterinarian assess the situation accurately. Be prepared to provide:
- Your name, address, and contact phone number
- The species and approximate number of animals affected
- A description of the clinical signs you have observed and when they first appeared
- The location of the affected animals (premises address or GPS coordinates for remote rangeland)
- Any recent movement history — sales, exhibitions, or transport in the past 30 days
- Whether a veterinarian has already examined the animals and, if so, their name and contact information
- Any diagnostic test results already obtained
For context on how reporting processes work in other states, you can compare New Mexico’s approach to livestock disease reporting in Florida, Illinois, and Michigan.
Reporting Deadlines and Timeframes in New Mexico
New Mexico’s reporting framework uses tiered language that effectively creates two categories of urgency: immediate reporting and prompt reporting without unnecessary delay.
Immediate Reporting
The diseases and conditions on the New Mexico reportable disease list are considered to be of significant economic impact and when discovered or diagnosed are to be immediately reported to the New Mexico livestock board’s state veterinarian. The word “immediately” is used deliberately and means as soon as you discover or diagnose the condition — not after you have run additional tests, consulted with neighbors, or waited to see if the animal improves.
This immediate standard applies to the full enumerated list under 21.30.4.9 NMAC, which includes all USDA- and OIE-notifiable diseases, foreign animal diseases, and the broad category of any condition of unusual morbidity or mortality.
Without Unnecessary Delay
The statutory language in Section 77-3-2 NMSA 1978 uses a slightly different standard for individual livestock owners: a person who has in his possession or under his care any livestock that he knows or has reason to believe is affected with a disease shall without unnecessary delay tell the board or some member of the board or the sheriff of the county in which the livestock is situate.
In practice, “without unnecessary delay” and “immediately” are treated as functionally equivalent for disease reporting purposes. Do not interpret “without unnecessary delay” as permission to wait days before calling. Any delay that allows a disease to spread further — or that allows potentially exposed animals to be moved — will be considered unnecessary.
Post-Confirmation Timeframes
Once a disease is confirmed by laboratory testing, additional regulatory deadlines apply. For equine infectious anemia specifically, if the NVSL confirms the sample is positive, the hold order will be upgraded to a quarantine within 24 hours of receipt of confirmation, and regulatory testing of the EIA-positive equid and its cohorts will be performed by a state or federal regulatory veterinarian within five days of NVSL confirmation.
Disposition of confirmed EIA-positive horses includes options such as euthanasia and burial or incineration within five days of NVSL confirmation of the regulatory sample, or export out of New Mexico within 30 days if the owner is able to obtain permission from the receiving state or country and USDA.
What Happens After You Report in New Mexico
Once you submit a disease report to the NMLB, the state veterinarian’s office initiates a response sequence that can involve investigation, quarantine, movement restrictions, and coordination with federal authorities.
Initial Investigation
After receiving a report, the NMLB will typically dispatch a veterinarian or inspector to the premises. For sheep and goats, the statute specifies that a person who owns or has under his control sheep or goats that have been exposed to or infected with a reportable disease shall forthwith report such fact to the director, and a veterinarian shall be immediately dispatched to examine the sheep or goats.
For suspected foreign animal diseases, the response escalates rapidly. A Foreign Animal Disease Diagnostician (FADD) shall collect appropriate specimens, and the FADD or other designated courier shall personally escort the specimens to Plum Island, NY for confirmatory testing at the National Veterinary Services Laboratory.
Quarantine and Movement Controls
One of the most immediate consequences of a disease report is potential movement restriction on your animals and premises. A “quarantine” or “quarantined area” means any area within the state of New Mexico whose physical boundaries have been established by order of the board or a duly authorized agent of the board for the purpose of controlling the movement of livestock to prevent the spread of disease.
If a disease is confirmed, all livestock movement must be approved by the New Mexico livestock board state veterinarian or by a NMLB approved agent, and all livestock movement requires an official certificate of livestock inspection.
For a foot-and-mouth disease scenario specifically, the response is highly structured. Animals on the premises shall be quarantined, a five-mile “High Risk Zone” shall be established around the suspect premises, and a fifteen-mile “Buffer Zone” shall be established around the High Risk Zone. Animals in the High Risk Zone shall not be moved until the suspect case has been diagnosed and movement is allowed by the Board.
Federal Coordination
The NMLB does not operate in isolation. The representatives of the United States Department of Agriculture Animal and Plant Health Inspection Service, under the specific authorization of the board, may inspect, quarantine, and condemn livestock affected with a disease or suspected of being affected with a disease or that have been exposed to a disease and for these purposes may enter any grounds or premises in the state.
This means that for nationally notifiable diseases, USDA APHIS veterinarians may become directly involved in your premises alongside state officials. Understanding how USDA’s national list of reportable animal diseases aligns with New Mexico’s state list will help you anticipate the scope of any federal response. You can also learn more about zoonotic diseases that carry dual reporting obligations to both animal health and public health authorities.
Notification to Neighboring Operators
If a quarantine zone is established around your premises, neighboring livestock operators within that zone will also be notified and placed under movement restrictions. Animals in the Buffer Zone shall be under a hold order and shall be moved by permit only. Livestock operators and other animal owners within the High Risk and Buffer Zones shall be advised immediately about the suspect case and the rules governing quarantine and movement of animals.
Penalties for Failing to Report in New Mexico
New Mexico treats failure to report a known or suspected livestock disease as a serious violation — not an administrative oversight. Both criminal and civil penalties apply, and they can compound quickly depending on the number of animals involved.
Criminal Penalties
Under Section 77-3-2 NMSA 1978, a person shall not bring into this state or sell or dispose of any livestock known to be affected or exposed to disease or move diseased or exposed livestock from quarantine without the consent of the board. A person who violates this provision is guilty of a misdemeanor and upon conviction shall be sentenced in accordance with the provisions of Section 31-19-1 NMSA 1978 for each head illegally moved.
The per-head structure of this penalty is significant. If you move 50 animals from a quarantined premises without authorization, you face a separate misdemeanor count for each animal. Any person who violates the provisions of these rules may be subject to the criminal and civil penalties pursuant to Sections 77-2-9 and 77-2-22 NMSA 1978. Penalties for misdemeanor crimes can include imprisonment of less than one year or fines up to $1,000 or both. Penalties for petty misdemeanors can include imprisonment not to exceed six months or fines up to $500 or both.
Civil and Administrative Consequences
Beyond criminal prosecution, failing to report can expose you to civil liability for the costs the state incurs responding to a disease outbreak you should have reported. Any guard or other proper expenses incurred in the quarantining of the livestock shall be paid by the owner, and if the same is refused after demand made by order of the board, an action may be brought to recover the same with costs of suit.
Additionally, the provisions preventing removal of animals from board custody also apply to any livestock being held by the board under federal regulations to prevent the spread of dangerous disease, and the penalty for removing an animal, animals, or carcasses from the custody of the board shall be that which is set by statute for violating a rule of the board.
Loss of Quarantine Cost Indemnification
For equine infectious anemia specifically, the financial consequences of non-compliance are spelled out clearly in the regulations. The owner is responsible for the cost of export or euthanasia and disposal of the EIA-positive equid(s) and shall not be indemnified by the state for any loss. This means that beyond fines, you bear the full financial burden of disposal — with no state compensation available if you are found to have violated reporting or movement rules.
Enforcement Authority
The NMLB has broad enforcement powers to back up these penalties. The NMLB’s mission is to protect the integrity of New Mexico’s livestock industry. Its team of about sixty full-time inspectors and another sixty full and part-time deputies continuously patrol and perform inspections around the state to help keep livestock free from disease and safe from theft. The NMLB is also the office of the State Veterinarian, whose team collaborates with various government and private sector partners to ensure the state remains free of diseases.
With that level of field presence across New Mexico’s rangelands, the likelihood that an unreported disease event goes undetected is lower than many producers assume. Proactive reporting protects your operation, your neighbors, and the broader industry — and it keeps you on the right side of a legal framework with real teeth. For additional context on disease management responsibilities that intersect with livestock reporting, review the resources on Florida and Michigan reporting systems, and consult the NMLB Animal Health page for the most current program-specific requirements in New Mexico.