爱尔夏牛，又称为埃尔夏牛，属原牛类，原产英国的古老品种。主要分布在美、加、澳、新西兰等国家，埃尔夏牛是芬兰乳牛业饲养的主要品种。 在台湾首次引进埃尔夏牛是在1897年，当时是由日本引进，其毛色是红白斑或褐白斑，身体下半部较多白色。

Ayrshire cattle (IPA /ˈɛərʃər/) are a breed of dairy cattle from Ayrshire in southwest Scotland. The adult Ayrshire cow weighs more than 450 to 600 kilograms (990–1,320 lb). Ayrshires typically have red and white markings; the red can range from a shade of orange to a dark brown. They are known for their hardiness and their ability to convert grass into milk efficiently. The breed's strengths today are traits of easy calving and longevity.