Oppong E N, Canacoo E A
Beitr Trop Landwirtsch Veterinarmed. 1982;20(3):303-7.
In 988 heads of cattle of all age groups and both sexes of various breeds and crosses at location near Legon/Accra the occurrence of supernumerary teats was studied. They were found to be more frequent in Sokoto Gudale and mixed Zebus (21 and 27%) than in the West African Shorthorn and N'Dama (8 and 6%). Crosses of these breeds with Friesian also had a higher prevalence than those with Jersey. There were significantly more caudal supernumerary teats (16%) than intercalary (2%) and ramal (1.5%). Bulls had fewer supernumerary teats than female cattle.
在莱贡/阿克拉附近地区对988头不同年龄、性别、品种及杂交品种的牛进行了研究，以调查副乳头的发生情况。发现索科托古达莱牛和杂交瘤牛（21%和27%）的副乳头比西非短角牛和恩达马牛（8%和6%）更为常见。这些品种与弗里斯兰牛的杂交后代的副乳头患病率也高于与泽西牛的杂交后代。尾侧副乳头（16%）明显多于中间副乳头（2%）和乳房侧副乳头（1.5%）。公牛的副乳头比母牛少。
