Veterinary Parasitology: The Practical Veterinarian - CX.com

• Trichodectes canis is an intermediate host of Dipylidium
caninum; Linognathus setosus is an intermediate host
for Acanthocheilonema reconditum; Haematopinus suis
transmits swine pox and probably Eperythrozoon.
Diagnosis
Lice and their eggs can be detected through careful
examination of hair or feathers and are easily seen with
the naked eye. A hand-held magnifying lens may assist in
their visualization.
Treatment and Control
Arthropods 31
Dogs and cats: carbaryl shampoos, sprays, or dips, applied
in two treatments at 1 week intervals, are effective.
Beef and nonlactating dairy cattle: numerous sprays,
dips, and pour-ons are available for use against lice as are
insecticidal ear-tags. Macrolide injectibles and pour-ons
have excellent activity against anopluran infestations and
pour-ons also work against mallophagans. If a herd has a
history of infestation, fall treatment is recommended to
avoid winter increase in lice populations. Beware of potential
host-parasite reactions to cattle grubs that may be concurrently
in the esophagus or spinal canal (see Hypoderma).
Lactating dairy cattle: a few compounds that can be
applied as sprays or used in back rubbers or dust bags are
available for this group of animals. Eprinomectin is also
approved and has no withdrawal time.