{"id":18139,"date":"2025-03-31T10:55:29","date_gmt":"2025-03-31T10:55:29","guid":{"rendered":"https:\/\/herdwatch.com\/en-uk\/?p=18139"},"modified":"2026-05-25T08:53:19","modified_gmt":"2026-05-25T08:53:19","slug":"nematodirus-in-lambs","status":"publish","type":"post","link":"https:\/\/herdwatch.com\/en-uk\/blog\/nematodirus-in-lambs\/","title":{"rendered":"Stay ahead of nematodirus: How to protect your flock and simplify medicine recording"},"content":{"rendered":"\n
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Farmer Guide<\/div>\n\n

Nematodirus in lambs: how to assess risk and protect your flock<\/h1>\n\n

\n Nematodirus is a serious parasitic disease that can strike lambs quickly, leading to high mortality and reduced growth.\n Understanding the risk factors and acting early is key to protecting flock performance.\n <\/p>\n\n

\n Sheep health<\/span>\n Parasite control<\/span>\n Lamb performance<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n
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\n 1<\/span>\n Primarily affects young lambs<\/span>\n <\/div>\n
\n 2<\/span>\n Can cause rapid onset disease<\/span>\n <\/div>\n
\n 3<\/span>\n Linked to weather and pasture conditions<\/span>\n <\/div>\n
\n 4<\/span>\n Early action helps reduce losses<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n
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Understanding the risk<\/h2>\n\n

\n Nematodirus, caused by the parasite Nematodirus battus<\/em>, is a major threat to young lambs.\n It can strike suddenly, leading to significant losses and reduced performance in affected flocks.\n <\/p>\n\n

\n Lambs are most at risk as they begin grazing, typically from around six weeks of age.\n The parasite lifecycle is closely linked to environmental conditions, with eggs surviving on pasture\n and hatching when the right temperature patterns occur.\n <\/p>\n\n

\n \u201cNematodirus can develop rapidly, making early awareness and timely action critical for protecting lamb health.\u201d\n <\/div>\n <\/div>\n\n
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How nematodirus develops<\/h2>\n\n

\n Eggs deposited by infected lambs can survive on pasture and hatch when environmental conditions trigger development.\n This can lead to a sudden increase in infective larvae on pasture, particularly where lambs begin grazing at the same time.\n <\/p>\n\n

\n Because of this, outbreaks can occur quickly and may catch farmers off guard if conditions are favourable.\n <\/p>\n <\/div>\n\n

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Symptoms of nematodirus<\/h2>\n\n

\n Infection typically causes severe digestive upset and can impact both survival and growth rates.\n <\/p>\n\n