What is the main symptom of worms in farm animals?

In drystock thrive will initially be affected, then scour will appear where gut and stomach worm burdens are high. High burdens of stomach worms in dairy cattle will produce bulk milk ostertagia ODR readings in excess of 0.5 and yield will be affected. Coughing is the initial sign of a lungworm burden in cattle. Faecal analysis, looking for L1 larvae, can be used to confirm lungworm in young cattle (<1.5 years) but not older animals. Lungwashes or analysis of antibodies can be used in these cases.

In drystock thrive will initially be affected, then scour will appear where gut and stomach worm burdens are high. High burdens of stomach worms in dairy cattle will produce bulk milk ostertagia ODR readings in excess of 0.5 and yield will be affected. Coughing is the initial sign of a lungworm burden in cattle. Faecal analysis, looking for L1 larvae, can be used to confirm lungworm in young cattle (<1.5 years) but not older animals. Lungwashes or analysis of antibodies can be used in these cases.