Animal health: As most farmers now have cows dried off and most animals have been housed for a month or more, now is the time to tackle parasites. There are three or four main parasites that can affect cows and cattle. These are lungworms, stomach worms, liver fluke, rumen fluke and lice. It’s bad to be dosing for something that isn’t present, because you could be building up resistance to the drug and when you need it, it may not work.
A lot of dairy farmers take part in herd health screening through the bulk milk samples. These track antibody levels of various parasites through the year. The key word here is antibody, so it looks at exposure. A high reading doesn’t necessarily mean the parasites are present, it means the cows have been highly exposed to the parasite.