Test 1 of Finals Week:
(can I just interject here and say how sad I am that when you Google Image search "check mark" ALL of the images you find are RIGHT-HANDED check marks? I mean c'mon!
There are loads of Lefties out there....represent!)
Today was my first Final Exam for The Dreaded Second Semester. I am now completely finished with smelling like formalin (at least until we get my grades back...but we're working on that positivity thing right now so roll with it, okay?). Next up, Parasitology. So for this evening's post I shall share with you my favorite parasite of the semester:
Heomonchus contortus
Superfamily: Trichostrongyloidea
Common name: Barber pole worm
Appearance of the ADULTS:
Present in abomasum2 – 3 cmWhite ovaries spiraled around blood-filled intestine - hence "barber pole" apperanceMales:
Asymmetrical dorsal lobeBarbed spiculesCervical papillaeLancet inside the buccal capsuleFemales:
Cervical papillaeLancet inside the buccal capsuleAppearance of the EGGS:
Typical trichostongyloid85 µmThin shelledShell surface smoothContain a morulaLife cycle is DIRECT with infection by L3.
This parasite undergoes HYPOBIOSIS - L4 encyst on gut wall and overwinterSite of infection: Abomasum
Pathogenesis/lesions:
Acute hemorrhagic anemiaACUTE haemonchosis:
Anemia – 2 weeksDecrease in packed red cell volumeContinual loss of iron and proteinHemorrhagic lesions on abomasumsContents are dark brownPale/edematuous carcassHemorrhagic gastritis (hyperacute haemonchosis) leads to sudden deathCHRONIC haemonchosis - typically due to a deficient pasture:
Weight lossWeakness/inappetenceWhat are some clinical signs? Hyperacute:
Lambs die from hemorrhagic gastritisAnemiaBottle jawAscitesLethargyDark colored fecesLoss of woolDiarrhea NOT typically seenPPR occurs with this parasite.
How is this parasite diagnosed?
SeasonHistoryClinical signsFecal worm egg countsTrichostongyloid L3NecropsyHow is this parasite treated/prevented?
Selective chemotherapyMajor resistance to all anthelminticsFAMCHAWhat is FAMACHA? (KNOW THIS and ASSOCIATE W/ THIS PARASITE!!)
Ocular mucous membrane chartDetermine level of anemia and thus appropriateness for treatment*****THIS PARASITE IS RESISTANT TO ALL TYPES OF ANTHELMINTICS*****
Whew! All of that for just one of 42 bagillion parasites we're expected to know for our final! Guess I should get back to work. Night kids!
(oh...and in case you were curious it's my fave because A) the name is super fun to say and B) spiral ovaries? that's freakin cool.)
6 people had something to say:
bugs are so gross----don't you think???????/
how is this????
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DOES THIS MAKE YOU FEEL ANY BETTER??
just trying to help when I can
not like that, I did it better on my screen. I will try again------
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still not coming out. OK--i will show you in person when u get to Tampa. I was trying to use this *@#* keyboard to make a left-handed checkmark. AT LEAST I TRIED. AND IT COMES OUT WHEN U TYPE IT, BUT JUST DOES NOT TRANSPOSE WHEN ENTERED AS A COMMENT. SORRY
my favorite is fasciola hepatic....just kinda roles off the tongue.
Talk about rolling off the tongue...how about that Oesophagostomum? Only took me about 6 weeks to learn how to pronounce it, and now its Super Fun! (losing my mind...)
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