# The Welfare of Livestock Regulations 1994, Paragraph 13


If the calf is more than 14 days old, it shall have access each day to dried feed or forage material containing sufficient digestible fibre (which shall be not less than 100-200 grammes daily depending on the age of the animal) so as not to impair the development of its rumen.

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Source: https://www.legislation.gov.uk/uksi/1994/2126/schedule/2/paragraph/13 (the official version)
Page: https://openlegislation.uk/welfare-of-livestock-regulations-1994/schedule-2/paragraph-13
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.