Observations were made in Ceylon from March 1970 to February 1971 on the post-mortem incidence of Oestrus ovis L. in goats. The incidence of O. ovis was 30−2% in Jamnapari goats but 16−2% in a South Indian breed. Peaks in incidence, seen only in Jamnapari goats, and peaks in the numbers of larvae per carcase, followed the monsoons. There was a significant association between O. ovis attack and symptoms of pleuropneumonia.
tion of mouse embryos in Macdonald freeze-thaw apparatus. Can. J. Anim.Sci.57: 389-394. An inexpensive freeze-thaw apparatus was constructed and used successfully to freeze and thaw mouse embryos (8-to 32-cell
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