The United States National Residue Program for meat, poultry, and egg products is a chemical testing program implemented by the USDA Food Safety Inspection Service. In 2010, the most recent published report, goats accounted for violations at higher rates than any other livestock class.
Six of 337 goats exhibited levels of drugs in violation of approved use in the domestic scheduled sampling plan. At 1.78 percent, the violation test rate for goats was 3.7 times higher than any other class of livestock Avermectins (Ivomec) and milbemycins (Cydectin), also known as dewormers or anthelmintics, were the drug classes responsible for all six violations.
These related drugs are used to treat parasite infections in livestock. Goats tested specifically for anthelmintics had violation level residues of 1.6 percent and 3.21 percent in 2009 and 2010, respectively. The suspected cause for the extraordinarily high rate of violations can be attributed to the fact that there are only two drugs currently approved for use in goats (morantel and fenbendazole) and therefore parasites affecting goats are becoming resistant to these drugs.
Goat producers should only use prescribed or FDA-approved over-the-counter drugs by the recommendation of their veterinarian. In instances that veterinarians prescribe doses of deworming products above label specifications, withdrawal times need to be extended accordingly.
Veterinarians and producers can find current information on anthelmintic resistance and parasite control at the American Consortium for Small Ruminant Parasite Control website.
Source: Michigan State University Extension
Six of 337 goats exhibited levels of drugs in violation of approved use in the domestic scheduled sampling plan. At 1.78 percent, the violation test rate for goats was 3.7 times higher than any other class of livestock Avermectins (Ivomec) and milbemycins (Cydectin), also known as dewormers or anthelmintics, were the drug classes responsible for all six violations.These related drugs are used to treat parasite infections in livestock. Goats tested specifically for anthelmintics had violation level residues of 1.6 percent and 3.21 percent in 2009 and 2010, respectively. The suspected cause for the extraordinarily high rate of violations can be attributed to the fact that there are only two drugs currently approved for use in goats (morantel and fenbendazole) and therefore parasites affecting goats are becoming resistant to these drugs.
Goat producers should only use prescribed or FDA-approved over-the-counter drugs by the recommendation of their veterinarian. In instances that veterinarians prescribe doses of deworming products above label specifications, withdrawal times need to be extended accordingly.
Veterinarians and producers can find current information on anthelmintic resistance and parasite control at the American Consortium for Small Ruminant Parasite Control website.
Source: Michigan State University Extension
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