The Department of Agriculture, Food and the Marine advises farmers in relation to the predicted risk of infection in lambs based on the advice received from the Nematodirus Advisory Group.
The disease
Nematodirosis is a severe disease of lambs six to twelve weeks of age which become infected through ingesting large numbers of infective larvae present on contaminated pasture. The life cycle of Nematodirus battus is unlike that of other roundworms in that typically it takes almost a year before the egg hatches releasing the infective larva. There is a mass hatching of larvae in spring when the soil temperature increases after a period of cold weather and disease typically occurs in April, May and June.
After ingestion Nematodirus larvae invade the intestinal mucosa and infection is characterised by profuse diarrhoea, dehydration and weight loss. In outbreak scenarios, lambs can be seen congregating around water troughs due to the severe thirst that develops, while the ewes which are unaffected continue to graze.
The Department of Agriculture, Food and the Marine advises farmers in relation to the predicted risk of infection in lambs based on the advice received from the Nematodirus Advisory Group.
The disease
Nematodirosis is a severe disease of lambs six to twelve weeks of age which become infected through ingesting large numbers of infective larvae present on contaminated pasture. The life cycle of Nematodirus battus is unlike that of other roundworms in that typically it takes almost a year before the egg hatches releasing the infective larva. There is a mass hatching of larvae in spring when the soil temperature increases after a period of cold weather and disease typically occurs in April, May and June.
After ingestion Nematodirus larvae invade the intestinal mucosa and infection is characterised by profuse diarrhoea, dehydration and weight loss. In outbreak scenarios, lambs can be seen congregating around water troughs due to the severe thirst that develops, while the ewes which are unaffected continue to graze.