Recommendation to marketing authorisation holders, highlighting recent measures in the veterinary field to promote reduction, refinement and replacement (3Rs) measures described in the European Pharmacopoeia - Applicable to veterinary vaccines from 01/01/(向营销授权持有人提出的建议，强调兽医领域最近采取的措施，以促进欧洲药典中描述的减少、改进和替换（3Rs）措施——适用于2001年1月起的兽医疫苗/)