About Certification

Frequently Asked Questions about "Going Organic"

Do organic farmers use antibiotics, hormones or parasiticides on their animals?

In the section describing animal health care (6.7), the Canadian Organic Standard states that farmers are not allowed to use these medications to prevent disease or sickness. However, medical treatment for sick or injured animals should never be withheld just to keep the animal’s organic status! There are a few special situations where these medications are permitted for use on organic livestock. For antibiotics and parasiticides, written instructions from a vet are needed that identify the product to be used and the treatment method.

Antibiotics: These may not be used for livestock that is to be sold as organic meat or for poultry that produces organic eggs. Dairy animals (cows, sheep or goats) may be treated with antibiotics in an emergency situation. The milk cannot be sold as organic for thirty days after the treatment, or for twice the withdrawal period listed on the medication’s label, whichever is longer. Also, the animal can only receive two treatments of antibiotics and/or parasite control in a year; if more medication than this is required, then the cow must go back into a one year transition period after treatment ceases.  If beehives are treated with antibiotics, they must be isolated from organic beehives and undergo a transition period of one year. All wax in the hive must be replaced.

Hormones: Hormonal treatment can only be used for sick animals under veterinary supervision. Hormones can never be used as growth promoters. There are some hormones listed on the Permitted Substances List (for example, oxytocin is permitted after birthing). If hormones not on the PSL are used, then meat from these animals can never be sold as organic.

Parasiticides: Organic farmers need to have a separate parasite management plan that details how they will minimize parasite problems. Synthetic parasiticides or anthelmintics can be used as a last-resort option. Before treating their animals, farmers must confirm that there is a serious problem - either by testing fecal samples or by observation of the condition of the animal.

  • Meat animals: only one treatment is allowed for young animals (under one year old); older animals can only receive two treatments total in their lifetime.
  • Dairy animals can receive two treatments total of antibiotics and/or parasite control per year; if more than this is given, they are placed back into a one year transition period.
  • Laying hens may receive one treatment per year; any more than this and they will not be considered organic.


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