The prevalence of mastitis in New Zealand ewes has not been studied for over 40 years. Quinlivan (1968a,b) examined 19427 Romney ewes in the lower North Island and detected mastitis in 0.6-1.7%. Clarke (1972) surveyed 118249 ewes in the lower South Island and found the incidence of mastitis was 0.6-0.7%. Skyrme (1970) reported the occurrence of “hard udders” and implicated them in lamb deaths. Perhaps because of such reports of low incidence, little research into sheep mastitis has been done in New Zealand...

SW, Peterson, B Nieper, MG Collett, and A Grinberg

Proceedings of the New Zealand Society of Animal Production, Volume 77, Rotorua, 114-116, 2017
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