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35 Cards in this Set
- Front
- Back
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Ascaris suum |
Common name: roundworm Found: Small intestine PPP: 8 weeks |
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Ascaris suum: ova |
50-70 um x 40-60 um Oval-shaped Golden brown colour Thick shell with prominent projections Detected by fecal flotation |
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Ascaris suum: pathogenicity |
Liver damage=viral/bacterial pneumonia Ill thrift, weight loss, respiratory symptoms Heavy loads of adult worms can cause intestinal obstruction Zoonotic |
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Trichinella spiralis |
Trichina worm Found in small intestine of swine |
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Trichinella spiralis Adults |
Male= 1.0mm long with tail having two small cloacal flaps but no spicule Female= 3.0mm long with uterus containing developing larvae |
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Trichinella spiralis Ova |
30-40um |
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Trichinella spiralis Pathogenicit |
Trichinellosis Adults have short life in the intestine and cause little damage Larvae burrow into tissues and from cysts in muscles (masseter, intercostals, diaphragmatic muscles) Infection spread through direct transmission (eat infected meat)
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Trichinella spiralis: Larvae |
Found: Encysted within muscle tissue (Predilection site masseter, intercostal, and diaphragmatic muscles) Larvated egg= 30-40 um
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Trichinella spiralis: Diagnosis |
Through meat inspection (greyish white spots) Use of a Trichinoscope then under the microscope Immunodiagnostic test for mass screening programs |
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Strongyloides ransomi |
Thread worm
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Strongyloides ransomi Life Cycle: PPP |
5-7 days |
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Strongyloides ransomi: Ova |
Larvated 45-55 um x 26-35 um Detectable by fecal flotation |
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Strongyloides ransomi Adult |
Found in te small intestine of swine Causes diarrhea in young piglets, severe infection can be fatal |
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Metastrongylus elongatus |
Common name: Lungworm Heavy infections = respiratory disease |
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Metastrongylus elongatus: Clinical Signs |
persistent cough, poor growth rate, ill thrift |
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Metastrongyluc elongatus: Life Cycle PPP |
24 days |
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Metastrongyluc elongatus: Ova |
Thick-walled, oval, and larvated 60x40 um |
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Macrocanthorhynchus hirudinaceus |
Common name: thorny-headed worm Found in the small intestine Spine attachment may cause rupture of SI Acanthocephalan-type parasite Similar to ascarids except has tiny backward facing spines to attach to its host Absorb nutrients directly through its integument |
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Macrocanthorhynchus hirudinaceus: Ova |
Shell has 3 layers 2nd shell is brown and pitted 40-65 um x 67-100 um Detected through fecal flotation |
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Macrocanthorhynchus hirudinaceus Life Cycle: PPP |
3-4 months |
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Macrocanthorhynchus hirudinaceus: Prevention |
Eliminate the beetle from the environment (concrete floors instead of dirt) |
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Taenia solium |
Common name: Human Pork Tapeworm Human=primary host, Swine=intermediate host Humans aquire infection when they eat improperly cooked meat from infected pigs |
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Taenia solium: adult/larva |
Adults= armed rostellum with a double row of hooks, ID by its 7-16 lateral branches of uterus in each gravid proglottid, found in the SI of humans Larval stage=found in muscle tissues of swine and humans |
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Taenia solium: Ova |
Striated embryophore surrounding an oncosohere with six hooklets inside ID in fecal flotation |
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Taenia solium Life Cycle: PPP |
2 months |
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Taenia solium: Diagnosis |
At meat inspection- cystcerci present in swine skeletal and cardiac muscle Serogical testing in humans and swine ID eggs in fecal flotations of HUMANS Irradiation of meat Consumer education |
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Protozoa PPP |
8-14 days |
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Balantidium coli |
Found in Large Intestines May infect primates, canines and humans Ciliated protozoan, trophozoites quite motile Generally non-pathogenic in swine |
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Balantidium coli: Trophozoites |
150x120 um Sausage-kidney shaped macronucleus |
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Balantidium coli: Cysts |
Sphericle-ovoid 40-60 um Detected by fecal flotation or a direct smear |
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Cryptosporidium spp. |
Found in mucosal cells of the small intestine of ruminants, swine, canines, mice, snakes, felines and humans Clinical condition- coccidiosis (Diarrhea) |
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Cryptosporidium spp.: Oocyst |
6x6 um Oval to spherical in shape Oocysts float high against coverslip Detected through fecal flotation or a direct smear OR through ELISA testing |
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Protozoa: Treatment |
Balantidium coli: tetracycline Eimeria spp.: sulfamethzine Cystoisospora suis: decoquinate |
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Protozoa: Prevention |
Frequent removal of feces Concrete preferable to dirt If outdoors move regularly Carry out regular fecal screening Regular deworming When weaned, move to clean ground Accommodation stages on an all-in-all-out basis Wash out using detergent between batches Examine livers regularly at the slaughter house |
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Balantidium spp. PPP |
6-14 days |
