{"id":17557,"date":"2024-10-25T11:01:09","date_gmt":"2024-10-25T11:01:09","guid":{"rendered":"https:\/\/herdwatch.com\/en-uk\/?p=17557"},"modified":"2026-05-25T09:14:00","modified_gmt":"2026-05-25T09:14:00","slug":"haemonchus-in-sheep","status":"publish","type":"post","link":"https:\/\/herdwatch.com\/en-uk\/blog\/haemonchus-in-sheep\/","title":{"rendered":"Rising haemonchus cases in sheep"},"content":{"rendered":"\n
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Farmer Guide<\/div>\n\n

Haemonchus in sheep: what farmers need to know about Barber\u2019s Pole worm<\/h1>\n\n

\n Haemonchus contortus, commonly known as Barber\u2019s Pole worm, is a blood-feeding parasite that can have a serious impact on sheep health and productivity. \n Early detection, effective treatment, and strong flock management are key to reducing losses.\n <\/p>\n\n

\n Sheep health<\/span>\n Parasite control<\/span>\n Flock management<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n
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\n 1<\/span>\n Blood-feeding parasite affecting the abomasum<\/span>\n <\/div>\n
\n 2<\/span>\n Can cause rapid and severe anaemia<\/span>\n <\/div>\n
\n 3<\/span>\n Thrives in warm, wet grazing conditions<\/span>\n <\/div>\n
\n 4<\/span>\n Early detection helps reduce losses<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n
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What is Haemonchus?<\/h2>\n\n

\n Haemonchus contortus, also known as Barber\u2019s Pole worm, is a gastrointestinal parasite that infects sheep. \n The worm lives in the abomasum (fourth stomach) and feeds on blood by attaching to the stomach lining.\n <\/p>\n\n

\n Each worm can ingest up to 0.5ml of blood per day. In heavy infections, this can lead to significant blood loss \u2014 \n for example, an animal carrying 5,000 worms may lose up to 250ml of blood daily.\n <\/p>\n\n

\n Sheep of all ages can be affected, and the severity of symptoms depends on the number of infective larvae ingested.\n <\/p>\n\n

\n \u201cHaemonchus can cause rapid blood loss, so early identification and treatment are critical.\u201d\n <\/div>\n <\/div>\n\n
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Clinical symptoms<\/h2>\n\n

\n The signs of infection depend on the level and duration of parasite exposure.\n <\/p>\n\n

Acute infection<\/h3>\n

\n Ingestion of large numbers of infective larvae over a short period can lead to severe disease.\n <\/p>\n\n