The farming of mink was pioneered in the USA more than 150 years ago, during the Civil War, at Lake Casadacka, New York. The first attempts to raise mink in Canada were recorded in the 1870s, by the Patterson Brothers, in Richmond Hill, Ontario.
USA: Today, some 275 mink farms in 23 states across the USA produce about 3 million pelts annually, with a farm-gate value of more than $300 million USD (2013). Wisconsin is the leading mink-producing state, generating well over 1 million pelts. Other important producers are Utah, Idaho, Oregon and Minnesota.
Canada: There are currently some 300 mink farms in Canada producing more than 2.8 million pelts annually worth $280 million CAD (2013). About half of these mink are raised in Nova Scotia. Other important producers are Ontario, British Columbia, Prince Edward Island, Newfoundland and Quebec.
Mink belong to the biological order carnivora, or meat-eaters. Within this order, mink belong to the family mustelidae (animals with scent glands), a group of efficient predators that includes skunks, martens, ferrets, fishers, wolverines and other members of the weasel family.
American mink (the species both raised on farms and found in the wild in North America) are classified as Mustela vison or Neovison vison.
More information on mink biology, behavior, range, reproduction
Through selective breeding over more than a century, North American farmers have developed a wide range of beautiful fur colors. Farmed mink are, in fact, quite different than their wild cousins. They are considerably larger and tamer.
From an ecological perspective, fur farming plays an important role in completing the agricultural nutrient cycle:
- farmed mink are fed leftovers from our own food-production; e.g., the parts of chicken, beef, or fish that humans don’t eat.
- In addition to fur, mink provide fine oils (“mink oil”) to protect and condition leathers, while manure and carcasses can be composted to produce a valuable organic fertilizer, biofuel, and in some areas, a new source of green electricity!
In other words, farmed mink recycle nutrients that would otherwise clog landfills, while producing a wide range of valuable natural products.
A Year on a Mink Farm
Although the basic activities which focus on providing the mink with a comfortable and stress-free environment, clean water, well balanced diets, and overall good health, remain the same year round, many other activities change based on the season, and where the mink is in its life cycle. There are four main seasons on a mink farm:
Conditioning & Breeding (December - March)
- Mink are brought into good breeding condition. Diet and feeding program adjusted to remove excess weight and encourage increased exercise. This is important for good production and a successful whelp.
- Some ranches choose to blood test (Aleutian disease) or vaccinate at this time.
- Mink are positioned in barns depending on the breeding system practiced. This often involves small sections of male mink surrounded by larger sections of female mink. Most farms breed a ratio of 4-5 females for every male.
- Females are always placed into the males’ pens for breeding – never the reverse – as the males should remain on their own territory.
- The act of mating stimulates ovulation. This is similar to domestic cats but different from other domestic species. At 9 days after the first pairing, the ovaries have been replenished. Thus, most ranchers practice a breeding program of Day 1 and Day 9. Many ranchers also mate the day after Day 9 (Day 10), as they feel that the extra mating results in the fertilization of more eggs.
- Breeding records are often kept for tracking the mating dates, but also the genetics of parents, grandparents, etc., and selection information.
Whelping & Weaning (April - June)
- Gestation varies from 40-70 days (due to a delayed implantation). Period may be shortened by extending the daylight period with the use of lights immediately following breeding.
- Nests are prepared and females kept comfortable. Unnecessary stresses and noises are avoided.
- Females birth an average of 5-6 kits (varies with colour-type). Newborn kits are very tiny (size of your pinky finger), have no fur, and cannot see.
- Females spend most of their time in the nest boxes caring for their kits.
- Nest boxes are checked regularly to ensure females are in good health, are lactating properly, and that all kits are getting ample milk, are being kept warm, and are growing well.
- Female health is also monitored by feed consumption. Sudden decline in consumption is a sign that the female (and litter) requires immediate attention.
- Kits are fostered if litters are large or milk supply is inadequate to support growth of all kits.
- Entire litters may be fostered if the female is sick, is not lactating properly, or is not caring for her kits. Female mink are normally very accepting of fostered kits.
- The correct balance of fat and protein are critical for proper lactation (thus kit growth) and maintenance of the females. Females are fed based on litter size, age of kits, and physical condition.
- Feed is introduced to kits between 4-5 weeks of age. They quickly transition to a diet consisting more of feed and less of mother’s milk. Kits will also become familiar with the water source (dish or nipple).
- It is important that nests are kept dry, that feed and water is readily available, and that the kits are content.
- At approximately 6-8 weeks of age, kits are weaned from mothers. When they are able to maintain body heat in smaller groups, they will be broken into pairs.
Growth & Furring (July - October)
- Main activity during this period is feeding. Feed rations are designed to promote growth. Mink are fed multiple times a day to ensure fresh feed is always available.
- In July all mink (kits and adults) are vaccinated. In Canada a 4-Way vaccine is used, protecting against Distemper, Pseudomonas, Enteritis and Botulism.
- In August growth of the winter fur begins. The diet changes to support hair growth.
- At the end of August, the mink’s bodily development has by and large been completed. Subsequent growth consists primarily of fat.
- It is important to keep nest boxes clean, the mink well fed, and content. This is critical in protecting the valuable fur coat.
- By fall the fur thickens (more hair per square inch). Fur growth begins at the tail and continues up the back and to the head. During furring the minks’ skin appears blue. When the fur is complete the skin changes to a creamy white.
- Mink fur has two components, the longer shinier guard hair that is most visible, and the shorter softer underfur that is hidden beneath.
- The winter furring process is not stimulated by cold temperatures, rather the shortening of the daylight period. This change stimulates the production of melatonin, a hormone that activates hair follicles to produce new hair.
Grading & Harvesting (November - December)
- Mink are graded in November or early December, depending on colour-type and sex. Grading involves the physical evaluation of a mink’s fur coat.
- Characteristics considered often include texture, density, nap length and colour. Market demand at the time will drive which characteristics one should focus on.
- Grades are used to determine which mink will be pelted, and which will be kept as breeding stock for the next season. Fur grades are often used in conjunction with size/weight, litter size, reproductive history of parents, temperament, and disease history/presence.
- Mink selected for breeding stock will be singled into pens.
- Mink selected for pelting will be euthanized by exposure to carbon monoxide. This method is humane, works quickly and creates minimal stress.
- Pelting may occur on site or mink may be shipped to a pelting operation offsite for processing.
- With few exceptions, the processed pelts are shipped to auction houses for sale.
More about what it’s like to work on a mink farm
The farm-raising of foxes began in the 1880s in Prince Edward Island, Canada, when fur industry pioneers Sir Charles Dalton and Robert Oulton began raising fox pups they obtained from the wild.
Through countless generations of selective breeding for color, size, quality of fur, fecundity, docility, mothering ability, growth rate, and litter survival, the farm-raised fox has evolved to be very different from its wild counterpart. Good nutrition, veterinary care, and adequate, secure accommodations have resulted in a larger, more robust animal exhibiting a much quieter temperament.
Most farmed foxes are fed with commercially manufactured, dry pelleted feed similar to pet food. Many are fed with a diet made up of fish and meat packing house by-products and other “food wastes”, supplemented with a grain cereal, vitamins and minerals, just like farmed mink.
Modern day fox production in North America is quite small in comparison to mink. Today, Finland is the world's leading producer of fox pelts; with Canada producing ten to fifteen times as many fox furs as the USA.
For more information on fox farming, visit:
Facts and figures about Farmed Fur
- About half the fur pelts produced in North America (and as much as 85 percent worldwide) now come from mink and fox farms.
- Wisconsin is the most important mink producing state in the USA, generating well over 1 million pelts per year. Other leading mink-producing states include Utah, Idaho, Oregon and Minnesota.
- With over 120 farms and 1,000 workers, mink farming is Nova Scotia’s largest agricultural activity and accounts for half of Canada’s total mink production. Other important mink-producing provinces include Ontario, Newfoundland, Prince Edward Island, British Columbia, and Quebec.
- North America produces about 10-12% of the annual world production of farmed mink (i.e., about 6 million pelts of total global production of 50-60 million pelts. Europe is the most important farmed-fur producing region, with Denmark alone raising about 13 million mink pelts.
- While not the largest producers, North American farmers raise some of the highest quality farmed mink and fox in the world.
- Fur Commission USA
- Fur Institute of Canada
- Fur is Green
- International Fur Federation
- North American Fur Auctions
- Canada Mink Breeders Association
- CanChilla (International)