Agency extends interim 3,000 mg/kg zinc maximum for starter swine feeds while evaluating new evidence from Canada's pork sector.
The Canadian Food Inspection Agency (CFIA) has announced it will maintain the current interim maximum zinc level of 3,000 milligrams per kilogram in starter swine feeds while it reviews new scientific and technical information submitted by Canada's pork sector.
The decision delays a previously proposed reduction that would have lowered the maximum allowable zinc concentration in starter piglet feed to 300 mg/kg, a level already established for most swine feeds under the Feeds Regulations, 2024.
According to the CFIA, concerns raised by feed manufacturers and pork producers suggested that the lower limit could present challenges when feeding young piglets during the starter phase. As a result, the agency is extending the interim maximum while it assesses new information and determines the most appropriate long-term approach.
The review includes information submitted by the Canadian Pork Council regarding zinc's potential role in supporting piglet health and performance. CFIA officials said the material will be evaluated alongside the broader body of scientific evidence before any permanent regulatory decisions are made.
For pork producers, the decision means existing feeding practices can continue for now. The interim limit was originally established when the Feeds Regulations, 2024 came into force, recognizing that higher zinc levels have been commonly used in starter rations for young pigs.
CFIA noted that current scientific evidence does not identify safety concerns with maintaining the interim 3,000 mg/kg maximum while the review is underway.
The agency also emphasized that it will continue consulting with stakeholders from both the feed and pork sectors throughout the evaluation process. Any future regulatory changes will be communicated well in advance to allow feed suppliers and producers sufficient time to adjust their operations.
Regulatory Background
Under the former Feeds Regulations, 1983, swine feed was generally limited to 500 mg/kg of zinc, although a customer-formula exemption allowed higher levels when requested by producers.
The newer Feeds Regulations, 2024, published on July 3, 2024, removed that exemption and established maximum nutrient values for feeds. For most swine diets, the zinc maximum was set at 300 mg/kg. However, an interim maximum of 3,000 mg/kg was retained for starter swine feeds to support industry transition and accommodate established piglet feeding practices.
The CFIA said its assessment of zinc, including zinc oxide used in piglet diets, remains ongoing. Until that review is complete, the current interim limit will remain in effect for starter swine feeds.