# The Welfare of Farmed Animals (Wales) Regulations 2007, Paragraph 27

Extent: E+W

(1) No other substance, with the exception of those given for therapeutic or prophylactic purposes or for the purpose of zootechnical treatment, may be administered to animals unless it has been demonstrated by scientific studies of animal welfare or established practice that the effect of that substance is not detrimental to the health or welfare of the animals.
(2) In sub-paragraph (1), “zootechnical treatment” (“triniaeth söotechnegol”) means the administering to an animal, in accordance with regulation 8 of the Veterinary Medicines Regulations 2013 , of veterinary medicinal products having an oestrogenic, androgenic or gestagenic action for synchronizing oestrus and preparing donors and recipients for the implantation of embryos, after examination of the animal by a veterinary surgeon or someone under the responsibility of a veterinary surgeon.

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Source: https://www.legislation.gov.uk/wsi/2007/3070/schedule/1/paragraph/27 (the official version)
Page: https://openlegislation.uk/welfare-of-farmed-animals-wales-regulations-2007/schedule-1/paragraph-27
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.