Moving Cattle Across State Lines to Maine: What Maine DACF Requires Before You Cross the Border

Roll up to the Maine border with a trailer of cattle and no import permit, and the load can be held until someone tracks down a state veterinarian on a Saturday afternoon. Moving cattle across state lines to Maine involves a specific stack of state and federal paperwork, and the requirements shift depending on the class of animal, its age, and whether it’s headed to a pasture, a sale barn, or a slaughter plant. Get the sequence wrong and you’re not just risking a fine — you’re risking animals stranded at a weigh station while their health records get sorted out.

This breakdown walks through exactly what Maine’s Department of Agriculture, Conservation and Forestry (DACF) expects, from ear tags to brucellosis testing to the newer H5N1 dairy rules, so you can line up every document before the trailer ever leaves the yard.

Cattle Class and Purpose of the Move Into Maine

Maine’s import rules don’t treat every animal the same way. A breeding heifer headed to a dairy operation faces a different checklist than a load of feeder steers going straight to a Maine slaughter establishment, and the Code of Maine Rules on animal disease prevention spells out separate tracks for each. A permit is required for all cattle imported into the State, and this does not apply to cattle imported from Canada consigned to a slaughter establishment.

Sex and reproductive status matter too. Only steers and/or spayed heifers may be imported without a brucellosis test, according to Maine’s animal import laws, while intact females and bulls trigger additional testing requirements covered later in this guide. If you’re sourcing from a specific cattle breed known for dairy production versus beef production, that classification often determines which paperwork trail applies once the animals reach the state line.

Pro Tip: Call DACF before you load, not after. Purpose of the move (breeding, grazing, exhibition, or slaughter) changes which forms and tests apply, and a five-minute phone call can save a day of delay at the border.

Official Identification and RFID Tags for Interstate Cattle

Every animal on the trailer needs to carry official identification that matches its paperwork. All cattle shall be identified by a permanent official ear tag approved by the state of Maine indicating the state of origin. That single requirement trips up more first-time shippers than almost anything else on this list, because a metal tag from a previous owner doesn’t automatically satisfy Maine’s standard.

The identification landscape has also shifted at the federal level. USDA’s final rule on the use of electronic identification eartags as official identification in cattle and bison was released in April 2024, and during the transition window metal, non-electronic tags continued to be allowed, but only RFID tags qualify as the official eartag for interstate movement going forward. Maine’s Division of Animal and Plant Health can supply producers, veterinarians, and others with RFID tags for cattle through the same office linked in the Maine DACF dairy cattle and HPAI guidance. Age and sex also affect the ID rule. All male dairy cattle born after March 11, 2013, and sexually intact dairy cattle of all ages moving across state lines must be officially identified and accompanied by an approved document listing official ID numbers, according to guidance compiled by the University of Tennessee’s Beef & Forage Center.

Cattle Type	Official ID Required	Typical Exception
Breeding cattle, sexually intact	Yes, individual RFID/official tag	None
Steers and spayed heifers	Yes, but no brucellosis test needed	Age under 180 days from farm of origin
Feeder or slaughter cattle (group move)	May move on backtag, no individual ID	Direct-to-slaughter within set timeframe
Lactating dairy cattle	Yes, RFID or acceptable official ID	Direct-to-slaughter cows still need ID

Disease Tests and Vaccinations Maine May Require

Brucellosis testing is where Maine’s rules get detailed, and the requirement hinges on where the animal has lived for the past year. There is no brucellosis test requirement for cattle imported directly from a farm of origin, provided those cattle have resided in a brucellosis-free area for the previous 365 days and that fact is documented on the certificate of veterinary inspection.

If that residency window isn’t met, the rules split by sex, vaccination status, and age. USDA officially vaccinated female cattle 545 days of age and older must test negative to an official brucellosis test conducted within the 30 days preceding importation. Female cattle not officially vaccinated, and all male cattle, 180 days of age and older must also test negative to an official brucellosis test within the same 30-day window. No brucellosis test is required for cattle originating directly from the farm of origin that are under 180 days of age.

Important Note: Cattle originating in Class “C” states shall not be imported into Maine under any circumstances, according to the state’s animal import laws — no test or permit overrides this restriction. Confirm your origin state’s current brucellosis classification with DACF before you plan the move.

Extra Rules for Dairy Cattle, Including HPAI / H5N1 Testing

Dairy cattle face an additional layer of testing that beef cattle don’t. All lactating dairy cattle moving across state lines must receive a negative test for Influenza A unless the cows are being moved direct to slaughter. This isn’t a Maine-only quirk — the USDA issued a Federal Order effective Monday, April 29, 2024, that impacts the movement of lactating dairy cattle nationwide, and Maine enforces it as part of its border checks.

Cattle headed straight to a processing facility get a narrower path. Lactating dairy cattle moving interstate direct to slaughter are not required to have a premovement test but must move on a certificate of veterinary inspection, the Owner Hauler Statement, or the cull cow worksheet. Even on this shortened track, cows moving direct to slaughter on a CVI or other approved documentation must have RFID tags or other acceptable forms of official ID. Skip the ID step and the paperwork exemption won’t save the load from being held.

Certificate of Veterinary Inspection (CVI / ICVI)

The CVI is the backbone document for almost every interstate cattle move, and Maine sets a firm expiration clock on it. All cattle imported into the state, except cattle consigned to a slaughter establishment, must be accompanied by a certificate of veterinary inspection issued within the 30 days preceding importation. That means a CVI written five weeks before your scheduled crossing is already void, regardless of how healthy the animals look.

A USDA-accredited veterinarian at the point of origin writes and signs the CVI, and it needs to list the official ID numbers for every animal on the load, along with the brucellosis test results and residency documentation discussed above. If any information on the CVI doesn’t match the ear tags physically in the trailer, expect the load to be flagged at inspection.

Pro Tip: Book your veterinarian visit for the CVI as close to loading day as practical. A 30-day-old certificate leaves almost no margin if the trip gets delayed by weather or a mechanical issue.

Entry Permits From Maine Animal Health

Beyond the CVI, Maine requires a separate entry permit before cattle can legally cross the border. According to Maine DACF’s livestock importation page, most livestock categories moving into the state fall under this permit system, and cattle are no exception outside the Canada-to-slaughter carve-out already covered. The permit number gets recorded directly on the CVI, so you’ll need to secure it before the veterinarian finalizes that document, not after.

This two-document structure — permit plus CVI — mirrors how Maine handles other imported animals as well; the state’s broader pet import laws in Maine follow a similar logic of permit-first, paperwork-second for species ranging from dogs to livestock.

Brand Inspection and Proof of Ownership

Maine itself doesn’t run a brand-inspection program the way several western states do. Instead, ownership gets established through registration papers, a signed bill of sale, or the origin state’s own brand documentation if the cattle are coming from a brand-inspection state. At minimum, proof of ownership can include registration papers, a bill of sale, or a brand inspection, alongside the CVI and any required import permits.

If your cattle originated somewhere with an active brand law, that origin-state paperwork often needs to travel with the load even though Maine won’t re-inspect brands at its own border. States like Montana require detailed statements about an animal’s shipping history — for example, a required statement confirming the animals are not “M-Branded” or have been in contact with M-branded cattle — and that same level of origin-state documentation should accompany cattle heading east into Maine. If you’ve previously handled a move to a brand state, the process for moving cattle across state lines to Wyoming or moving cattle across state lines to Wisconsin illustrates how differently brand-heavy states approach the same ownership question.

Direct-to-Slaughter, Market, and Other Limited Pathways

Cattle headed straight to a licensed slaughter facility follow a shortened federal and state pathway. Feeder cattle and those cattle and bison that move directly to slaughter do not require individual official identification and may move on backtags, according to USDA’s National Import Export Services animal movement guidance. That’s a meaningful shortcut for large slaughter-bound loads that would otherwise need individual ID on every animal.

Maine layers its own exemption on top of the federal rule for the Canada-to-slaughter route specifically, while other direct-to-slaughter cattle still typically move on a CVI, an Owner Hauler Statement, or comparable documentation rather than a full battery of pre-movement tests. Sale barns and livestock markets sit in a middle zone — animals passing through a market en route to a new owner generally still need the full CVI and permit package, since a change of ownership at auction restarts the standard import requirements rather than exempting the load.

Papers That Must Travel With the Load

Every document discussed so far needs to physically ride with the shipment, not just exist in a filing cabinet back at the farm. At minimum, a Certificate of Veterinary Inspection, proof of ownership, and any required import permits should stay in the truck during transport. Roadside inspections can occur, and failure to produce required paperwork can result in animals being held at the state line.

• Certificate of Veterinary Inspection issued within 30 days of crossing
• Maine entry permit number (recorded on the CVI)
• Official RFID or approved ear tag numbers matching the CVI
• Brucellosis test results and residency documentation, if applicable
• HPAI/Influenza A test results for lactating dairy cattle, if applicable
• Bill of sale, registration papers, or brand documentation proving ownership

Pre-Load Checklist Before You Cross Into Maine

Working through these steps in order, rather than scrambling the morning of transport, keeps most shipments moving without a stop at the border.

1. Confirm the class and purpose of the move (breeding, grazing, exhibition, or slaughter) to know which rules apply.
2. Verify every animal has a permanent official ear tag or RFID tag matching Maine’s identification standard.
3. Schedule brucellosis testing within the 30-day window if the herd hasn’t resided in a brucellosis-free area for 365 days.
4. Arrange HPAI/Influenza A testing for any lactating dairy cattle not moving direct to slaughter.
5. Book the accredited veterinarian visit for the CVI as close to loading day as possible.
6. Call Maine’s Division of Animal and Plant Health to obtain the entry permit number before finalizing the CVI.
7. Gather bill of sale, registration papers, or brand documentation proving ownership.
8. Load all physical paperwork in the truck cab, not just in email or a farm office file.

Where to Confirm Current Maine Cattle Import Rules

Import requirements change with disease conditions, so treat everything above as a starting checklist rather than a final answer. Call the Division of Animal and Plant Health at 207-287-3701 to obtain a prior permit number and to get the latest requirements for the species you wish to bring into the state, according to Maine DACF’s own guidance for producers.

Industry veterinarians echo the same advice for any interstate cattle move, not just those bound for Maine: producers and haulers should always call the state of destination to ensure they meet all entry requirements. Pairing that phone call with Maine’s official Animal Health division page gives you the most current word before a single hoof crosses the state line.

Key Insight: Rules around HPAI testing, brucellosis classifications, and RFID tag transitions have all changed within the past two years. A permit that was valid for last year’s shipment isn’t a guarantee the same paperwork clears this year’s load.