Lice
In New Zealand there are four species of lice known to infest
cattle, however only two are significant:
- Sucking lice - Linognathus vituli (long-nosed sucking
louse)
- Chewing lice - Damalinia bovis (also known as Bovicola
bovis)
Linognathus vituli (sucking lice) is the most common louse in
New Zealand. Adults are 2-3mm in length, with a long, narrow
head and a yellowish-brown body that appears bluish due to ingested
blood. They are usually found on protected areas of the skin and
are generally more prevalent on younger dairy stock.
Damalinia bovis (biting lice) is found on cattle of all ages.
Its mouthparts are adapted for chewing and it feeds on debris on
the skin such as dead skin cells, secretions and bacteria. This
parasite is often found in colonies, which sometimes appear as
circular, crusty lesions, but may spread all over in winter.
Lice cause irritation of the skin and stimulate scratching,
rubbing and licking leading to restlessness, damage to hair coat or
fleece and hides and loss of milk production. Lice appear in
larger numbers during autumn and winter when the climate is more
favourable for lice.
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Baymec Injection
Baymec Injection, a non-sting macrocylic lactone injectable drench containing abamectin for the control of roundworms, lungworms and lice for cattle.
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Baymec Pour-on
Baymec Pour-on, a persistant, oily, rainfast macrocylic lactone pour-on drench containing abamectin for the control of roundworms, lungworms and lice for cattle and deer.
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Destruct
Destruct is a cattle lice pour-on to control lice on cattle.
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