Field Trials on the Application of Various Formulations of Diazinon and Dieldrin for the Control of Blowfly Strike in Sheep

A field survey was undertaken between 1972-76 to reappraise the nature of the blowfly problem in New South Wales. For 2 years, 1972-1974, some 80,000 sheep were kept under observation and 12,481 strikes were reported, most due to Lucilia cuprina. Breech strike was still the basic problem but tail strike associated with scouring had become an important component where pastures have been improved. Breech strike was controlled at minimal cost by managerial practices such as docking tails the correct length--second joint-space palpable ventrally (midway down the vulval orifice in ewes) for radically mulesed lambs and the third joint-space (tip of vulva in ewes) for all other lambs-mulesing at lamb marking, mid-season crutching, determining the cause of scouring and applying the appropriate preventative or remedial measures. Thus the use of insecticides could be reserved for the control of body strike in young sheep in the odd wet years and poll strike in horned rams. Major outbreaks of body strike occurred in 1973/74. Body strike worried graziers most because of its unpredictability, sudden onset and scale. and only failing insecticides were available for control.

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Field Trials on the Application of Various Formulations of Diazinon and Dieldrin for the Control of Blowfly Strike in Sheep

Cited by 4 publications

References 4 publications

Field Trials on Three Methods of Applying Diazinon to Sheep for the Control of Blowfly Strike

Field Trials on Three Methods of Applying Diazinon to Sheep for the Control of Blowfly Strike

Control of Ovine Cutaneous Actinomycosis

The Blowfly Strike Problem of Sheep in New South Wales

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