USDA Livestock Transport Regulations for Cattle Haulers
Moving cattle across state lines involves federal regulatory requirements that every rancher, order buyer, livestock dealer, and commercial hauler should understand. The USDA Animal and Plant Health Inspection Service (APHIS) administers several federal programs that directly affect how cattle must be handled, documented, and transported. Violations can result in fines, quarantine, and in serious cases, criminal penalties.
This guide covers the primary federal livestock transport regulations that apply to cattle operations in Texas and the surrounding states. Star Manufacturing builds cattle trailers in Wharton, TX for ranchers and operators who need to understand these requirements to stay compliant and protect their operations.
The 28-Hour Law (Federal Humane Transport Act)
The 28-Hour Law (7 U.S.C. 54) is the foundational federal humane transport requirement for livestock. The key provisions:
- Maximum confinement: Livestock transported across state lines by motor vehicle cannot be confined for more than 28 consecutive hours without being unloaded for rest, water, and feed
- Minimum rest period: Once unloaded, animals must have at least 5 hours of rest before reloading
- Extension provision: The maximum can be extended to 36 hours if the owner or shipper submits a written request before or during transport, stating that extension is needed for animal welfare or because unloading is impractical
- Enforcement: USDA APHIS, with assistance from FMCSA during roadside inspections
- Penalties: Civil penalties from $100 to $500 per violation, per load
Practical note for Texas operations: Most cattle hauls within Texas and to neighboring states (Louisiana, Oklahoma, New Mexico) are completed well within 28 hours. This rule becomes operationally significant for long-haul movements — Texas Panhandle to Iowa feedlots, for example, where total transport time can approach or exceed the 28-hour threshold.
What Qualifies as a Rest Stop
A qualifying rest stop must provide:
- Adequate space for all animals to lie down simultaneously
- Access to water
- Access to feed appropriate for the animal class
- Adequate protection from weather extremes
Facilities must be clean and free of disease hazards. Using a private ranch, commercial stockyard, or USDA-approved rest facility all qualify — but the facility must actually provide the above conditions, not just represent a stop in transit.
Certificate of Veterinary Inspection (CVI) — Interstate Movement
Most cattle moving interstate require a Certificate of Veterinary Inspection (CVI), also called a "health certificate" or "brand inspection." Requirements vary by:
- Origin state regulations
- Destination state regulations
- Purpose of movement (sale, exhibition, slaughter, breeding)
- Animal age and vaccination status
Texas Outbound Requirements
Texas Animal Health Commission (TAHC) regulations govern cattle leaving Texas. Requirements vary by destination state, but generally include:
- Health certificate from a USDA-accredited veterinarian (valid 30 days from exam)
- Official individual identification (RFID ear tag or other USDA-approved ID) for cattle in most movement categories
- Negative brucellosis test for sexually intact cattle over 6 months moving to certain states (requirements vary by state)
- Tuberculosis testing requirements vary by origin county (Texas has multiple TB zones)
Destination State Requirements
Every state has its own entry requirements for cattle. Before moving cattle interstate, verify current requirements with the destination state's animal health authority. Common requirements in states that receive Texas cattle include:
| State | Common Entry Requirements for Feeder Cattle |
|---|---|
| Oklahoma | CVI, official ID, brand inspection (some counties), brucellosis test for breeding cattle |
| Louisiana | CVI, official ID, Louisiana Department of Agriculture and Forestry permits for certain classes |
| Kansas/Nebraska (feedlot destinations) | CVI, official ID, negative brucellosis test may be required for feeders from certain areas |
| New Mexico | CVI, official ID, brand inspection certificate (Brand Board inspection required) |
| Colorado | CVI, official ID, Colorado Brand Board permit |
Important: These requirements change. Always verify with the destination state's animal health agency before moving cattle. USDA APHIS maintains state contact information at the APHIS Veterinary Services website.
Official Individual Identification (Official ID)
The USDA National Animal Identification System (NAIS) — now administered as part of USDA's traceability framework — requires official individual ID for cattle in interstate movement. Approved official ID includes:
- 840 RFID ear tags: Official USDA-approved RFID tags with "840" prefix (U.S. country code). These are the standard for new official IDs.
- Brucellosis calfhood vaccination tags: Orange OCV tags serve as official ID for vaccinated heifers
- AIN tags: Animal Identification Number tags meeting USDA specifications
- Brand + breed + sex + age: May serve as group lot ID for slaughter cattle in some movement categories
Cattle without official individual ID cannot legally move interstate in most categories. This is a consistent enforcement priority at sale barns and weigh stations.
Veterinary Feed Directive (VFD) and Drug Residue Compliance
While not strictly a transport regulation, cattle being hauled for slaughter must comply with USDA FSIS drug withdrawal period requirements. Cattle that have been treated with antibiotics or growth hormones must be beyond the applicable withdrawal period before slaughter. Veterinary Feed Directive medications (medicated feeds) require documentation.
For commercial haulers accepting cattle from multiple consignors, ensuring that shipper certification of withdrawal period compliance is part of the bill of lading process protects the hauler from liability exposure.
USDA Regulatory Contacts for Texas Operations
- Texas Animal Health Commission (TAHC): (800) 550-8242 — Texas-specific interstate movement requirements, TB/brucellosis testing requirements, permit applications
- USDA APHIS Veterinary Services Texas Area Office: (512) 383-2400 — federal interstate movement requirements, accredited veterinarian finder, CVI questions
- Texas and Southwestern Cattle Raisers Association (TSCRA): Field inspectors throughout Texas and Oklahoma provide brand inspection services and movement documentation
- USDA FMIS: Federal Meat Inspection Service for slaughter-bound cattle compliance questions
How Your Trailer Affects Regulatory Compliance
The trailer you use affects your compliance posture in several practical ways:
Documentation and Record-Keeping
CVIs, brand inspection certificates, and bills of lading should travel with the load. A secure, weatherproof document holder in the cab area or integrated into the gooseneck nose box helps ensure paperwork arrives with the load — not soaked or missing.
Floor Integrity for APHIS Inspections
APHIS inspectors can order cattle held if the transport trailer presents conditions that threaten animal welfare. A trailer with a deteriorating floor, failed gates, or inadequate ventilation creates potential regulatory exposure beyond just equipment failure. Star Manufacturing's structural approach — 5/16" heavy angle frame, seam welded construction, laser-cut precision components — produces trailers that maintain structural integrity across years of commercial use.
Cleanout Requirements
Some states require trailers to be cleaned and disinfected before entry, particularly when transporting cattle from TB-affected areas or during disease outbreak situations. Hot dip galvanized trailer surfaces are easier to clean and disinfect than painted surfaces with flaking, peeling areas that harbor pathogens.
Load Sizing for Animal Welfare Standards
USDA's guidance on space allowances for cattle transport recommends 14–20 square feet per 1,000 lb animal depending on trailer configuration and trip length. Proper load sizing not only reduces stress-related weight shrinkage, it reduces risk of regulatory action for overcrowding complaints. Use our trailer sizing guide to match trailer length and width to your animal class and head count.
Interstate vs. Intrastate Movement
Texas intrastate cattle movement (entirely within Texas) is regulated by the Texas Animal Health Commission rather than federal USDA regulations. TAHC requirements for intrastate movement are generally less stringent than interstate requirements, but some documentation (brand inspection in some regions, TB testing in affected counties) still applies intrastate.
Cattle that begin and end a haul in Texas but pass through another state (for example, a haul through Oklahoma with no stops) may still technically constitute interstate commerce — a question worth clarifying with your veterinarian or attorney if it applies to your operation.
The Right Trailer for Compliant Commercial Hauling
Star Manufacturing builds cattle trailers sized 14' to 40' for commercial and ranch hauling operations throughout Texas and the Gulf Coast region. Our hot dip galvanized trailers are built for the demands of commercial livestock transport — easy to clean, structurally sound over years of high-cycle use, and sized correctly for the head counts that commercial operators move. Get an instant quote at starmetalfab.com/build.
See also: Cattle trailer lineup | CDL requirements for livestock haulers | Feedlot cattle hauling | Contact us
Frequently Asked Questions
Does the 28-Hour Law apply to intrastate cattle hauling in Texas?
The 28-Hour Law applies to interstate commerce (movement crossing state lines). For purely intrastate Texas cattle movements, Texas state humane transport standards apply. However, for commercial operations, Texas standards are generally aligned with the 28-hour framework in practice.
Who issues health certificates for cattle leaving Texas?
Health certificates (CVIs) must be issued by a USDA-accredited veterinarian. Texas has approximately 3,500 accredited veterinarians who can issue CVIs. USDA APHIS maintains a searchable directory of accredited veterinarians by state and county at their Veterinary Services website.
What happens if cattle arrive at a state line without proper documentation?
State animal health officials at ports of entry can refuse entry, quarantine the load, or require the load to return to origin for proper documentation. Fines may also apply. The cost of a non-compliant load far exceeds the cost of proper documentation before movement.
Are there special USDA requirements for hauling rodeo cattle across state lines?
Yes. Rodeo cattle, show cattle, and exhibition animals moving interstate generally require CVIs and may have specific requirements for the destination state. Rodeo stock that crosses state lines multiple times per year should establish a relationship with an accredited veterinarian who understands the specific requirements for each state on the rodeo circuit. See also our rodeo and show cattle trailers page.