1761973
Description
Flashcards by Marielle83, updated more than 1 year ago
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Created by Marielle83
over 9 years ago
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| Question | Answer |
| T or F In ovine ostertagiosis; the ewes have a big role in contamination of pastures | True |
| T or F In bovine ostertagiosis; the cows have a big role in contamination of pastures | False |
| Which type of ostertagiosis is more common in a) Sheep? b) Cattle? | a) Sheep - Type I b) Cattle - Type II |
| During what months does ostertagiosis type I and type II occur? | Type I: July to Oct Type II: March to May |
| Which worm has an excretory notch? | Trichostrongylus axei |
| Where does Trichostrongylus axei develop from L3 to L4? | Sub-epithelial tissue (of the intestine and abomasum) |
| T or F Anthelmintic resistance is a major problem in ostertagiosis | True |
| T or F Anhelmintic resistance is common for Haemonchus spp. | True |
| Does immunity to Haemonchus occur in a) Sheep? b) Cattle? | a) Sheep - poor immunity b) Cattle - immunity in animals >2 yrs |
| The pathogenesis of Haemonchus is divided into what 3 groups? | Hyperacute (up to 30.000) Acute (2-20.000) Chronic (100's) |
| T or F Diarrhoea is a feature of Haemonchosis | False |
| "Bottle jaw" is a feature of which parasite infections? | Haemonchus Fasciola |
| In the FAMACHA system for assessing clinical anaemia, what are the PCV values for the fatal and optimal statuses? | Fatal: 10 Optimal: >30 |
| T or F Haemonchus spp. cannot overwinter in the UK | True (they arrest as L4 in tissues) |
| Which species of Trichostrongylus in ruminants lives in the a) Abomasum b) Small intestine | a) T. axei b) T. colubriformis |
| Which genus of hookworm lives in the small intestine of ruminants? | Bunostomum |
| What age lambs are susceptible to Nematodirus battus infections? | 3 weeks --> 3 months |
| Which small intestine parasite is responsible for acute PGE in lambs and is a common primary pathogen? | Trichostrongylus vitrinus |
| Which infectious routes apply to Bunostomum spp? | Percutaneous Oral |
| Place the following parasites in order from largest to smallest Ostertagia Trichostrongylus Haemonchus | Haemonchus > Ostertagia > Trichostrongylus |
| Which other animal can be a source of infection of Nematodirus battus to lambs? | Calves |
| Which parasite can cause severe illness in man and is associated with eating watercress? | Fasciola hepatica |
| When do Galba truncatula snails breed? | May - October |
| What 3 factors determine the presence of Fasciola metacercariae on the pasture? | 1. Presence of snails 2. Moisture 3. Temperature |
| Which anthelmintic is used to treat acute fasciolitis? (and to which there now is a resistance problem in some parts of the UK) | Triclabendazole |
| Both a land snail and an ant are the IMH's of this fluke | Dicrocoelium dendriticum |
| For which fluke will the host only show clinical signs in heavy infections, and the signs are very general and under the radar? | Dicrocoelium dendriticum |
| Where would you find Paramphistomum a) juveniles? b) adults? Which ones cause pathology? | a) duodenum b) rumen/reticulum Juveniles cause disease |
| Pair the fluke with the corresponding anthelmintic Paramphistomum Dicrocoelium Fasciola (acute) Schistosoma Triclabendaxole Oxyclozanide Albendazole Praziquantel | Paramphistomum - Oxyclozanide Dicrocoelium - Albendazole Acute fasciolosis - Triclabendazole Schistosoma - Praziquantel & Albendazole |
| Which fluke have sexual reproduction? | Schistosoma |
| Which fluke infect all domestic mammals, ruminants and is the 2nd biggest cause of parasitic disease in man after malaria? | Schistosoma |
| Which fluke resembles tea leaves? | Dicrocoelium dendriticum |
| What indicates whether a worm is resistant to a drug or not? | It is resistant if it fails to reduce the worm burden by >90% |
| Which pig parasite egg is the only one found indoors which makes it diagnostic? | Oesophagostomum |
| Name all the pig worms you might find in the large intestine | Trichuris suis Trichinella spiralis Oesophagostomum (also SI) |
| IMH of Dipylidium caninum? | Flea/Louse |
| IMH and FH of Anoplocephala perfoliata? | Forage mite Horse |
| Features of A. perfoliata egg | Mis-shapen Pyriform apparatus |
| IMH for Echinococcus g. granulosus? | Ruminant/Pig/Human |
| IMH for Echinococcus g. multiocularis? | Rodent/Human |
| Which parasite do you associate with sheep measles (white spots on meat)? | Taenia ovis |
| Where does the development L3-L4 happen for Dirofilaria immitis? | Sub-cutanoeus tissues in FH (after mosquito bite) |
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