The cost of fly strike to sheep farmers is considerable. Apart from animal deaths, other costs include: labour and chemicals for control, reduced wool value and poorer animal performance. Also, there is a cost in animal suffering and potential for chemical contamination of wool. Furthermore, fly resistance to currently available forms of chemical control is increasing. A complementary approach to controlling fly strike is to enhance the animal’s genetic resistance via selection.

JH, Brandsma, and HT Blair

Proceedings of the New Zealand Society of Animal Production, Volume 57, , 41-42, 1997
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