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NADIS Knowledge Transfer - Nematodirosis

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Nematodirosis is an important disease affecting:

	Lambs during late summer on pasture grazed by lambs all year
	Young lambs managed on pasture grazed by young lambs the same year
	Ewes during late summer on pasture grazed by lambs all year
	Young lambs managed on pasture grazed by young lambs the previously year
	Ewes not drenched at lambing time

Nematodirosis is diagnosed after:

	Positive faecal worm eggs counts of ewes
	History that lambs have not been drenched since birth
	Positive faecal worm eggs counts of lambs
	Clinical examination (and necropsy of any dead lambs)
	Investigation of weather conditions since lambing

Appearance of infective larvae on pasture occurs after:

	A period of cold exposure then temperatures above 10°C over a period of several days
	A wet summer
	A period of dry weather followed by heavy rain
	A period of cold exposure then temperatures above 15°C over a period of several days
	2 litres of oral rehydration solution by bottle/teat plus antibiotic injection

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