Module 6- Parasite Control Flashcards
the most important ones parasites
strongyles, ascarids, tapeworms and bots
the first stage of the parasite and must go through several stages to become adults
larvae
large group of parasites
roundworms
it is widespread. unless control measures our practiced, they are likely to increase and cause severe injury or death of the horse.
internal parasites
are the most injurious parasites
strongyles
parasites that are generally less harmful
ascarids, bots, and tapeworms
horses affected the most by parasites are
young sucklings or weanlings, and yearlings
the most of the parasites that affecting horses are
nematodes
are single-celled animals that occur in bloodstream and intestinal tract of horses
protozoans
roundworms are by far the most serious and economically important of the worms that occur in horses.
nematodes
occur in horses use pasture mites as intermediate hosts
cestodes
tapeworm that occurs in horses
large worm
absorb nutrients through their skin, having no mouth or anus.
trematodes
the group of nematodes are the most damaging of all the parasites that occur in horses
large strongyles
are much smaller than the large strongyles, usually about 13 mm in length.
small strongyles
the most common tapeworm in horses is in the
genus anoplocephala
the large horse tapeworm and occurs most often in the small intestine.
anoplocephala magna
are the equine stomach worms that cause two rather distinct diseases in horses
gastric and cutaneous habronemiasis
the horse ascarid. this is a very large robust roundworm.
parascaris equorum
horses like people and unlike dogs can have this parasite.
pinworms
is a protozoan disease occurring in horses mules and donkeys. it occur and red blood cells. the life cycle is indirect
babesiosis
symptoms vary depending on where in the central nervous system the organism is located. the most frequent signs include stumbling and in coordination
equine protozoal myeloencephalitis
external parasites of horses includes;
these cause irritation and may carry disease
ticks, mites, chiggers and lice.
has become widely distributed because horses now are commonly transported from one part of the country to another
winter tick
are ectoparasites that are closely related to ticks and cause a skin condition called mange.
mange mites
causes lesions usually found on the neck shoulders head chest and flanks of horses. this mites burrow under the skin and cause severe irritation and itching.
sarcoptic mange
produces lesions like sarcoptic mange. horses affected with this mites will paw, lick bite at their lower legs an an attempt to relieve the itching
chorioptic mange
occurs primarily on the poll or the tail. also causes intense itching with hair loss and scabs if the horse traumatizes itself extensively
psoroptic mange
it affect horses in match the same way they affect people. larval stage of harvest mites that affect horses feet and muzzles as they walk and feed on infested pastures
chiggers and lice
can be a very serious problem and horses. which feed on skin and hair.
lice
there are two kinds of lice
biting lice and suckling lice
practices should be used to control parasite infections
sanitation and good management
aid in controlling and minimizing the spread of infections
sanitation and sound management
checklist of sanitation and management practices effective in reducing numbers of parasites and flying insects includes the following;
proper manure disposal
pasture management
feed
water
removal of bot eggs
regular deworming of horses
for effective parasite control, horses often need to be treated with specific drugs
anthelmintic drugs
once yearly deworming against tapeworms is recommended for horses that are routinely dewormed with
ivermectin
