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44 Cards in this Set
- Front
- Back
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Which bacteria causes impetigo ? |
S aureus (DS farm atlas ) |
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As per DS farm atlas , which bacteria are associated with bovine interdigital necrobacillosis (foot rot) |
F necrophorum and prevotella (bacteroides) melaninogenicus |
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Which 3spirochetes are associated with bovine digital dermatitis (DS farm atlas)? |
Treponema medium / vincetti like Treponema phagedenis like Treponema Pedis |
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Which cows are prone to digital dermatitis ? |
DS atlas - dairy ; first calf heifers and young cows. 80% lesions on plantar hind foot |
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Which stain can be used for identifying treponema like organisms ? |
Silver stains - eg warthin Starry (journal comparative path 2015 - histo characterisation of CODD missing Articles) |
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Which dermatophyte most commonly infects cows ? |
T verrucosum |
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Sporotrichosis has been reported in cattle T or F |
True |
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Give four DDx for chorioptic mange in cattle |
Sarctopic , psoroptic , psorergatic , pediculosis |
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Chorioptic mange can be asymptomatic in cows - T or F |
T |
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Topical MLs more effective than systemic for chorioptes in cattle T or F |
T (A Foster cattle mange in GB missing article ) |
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How long can chorioptes survive off the host ? |
At least 3 weeks ( A Foster cattle in GB missing article) |
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It is easy to eradicate chorioptes from a herd T or F |
False ( A foster cattle mange in GB ) |
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Which breed is prone to psoroptes ? |
Belgian blue |
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Why should crusts be removed when treating psoroptic mange ? |
Harbour large numbers of mites and eggs therefore destroy |
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How long can psoroptes survive off the host ? |
Approx 18 days depending upon weather conditions (AF mange in GB missing article ) |
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Which products are licensed in the Uk for treating psoroptic mange in cattle ? |
Injectable MLs or moxidectin or doramectin pour on . Note differences in efficacious between ivermectin formulations noted ; repeat tx often required to kill all mites |
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Which mite is A and which is B? |
A is chorioptes B is psoroptes |
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How can sarcoptes be tx in cattle ? |
Systemic MLs and permethrin |
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Which three demodex do cows have? |
Danny Scott : d bovis . It is not clear if the following 2 are associated with dz ; d Tauri , d ghanensis |
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Which is the most common cause of viral teat lesions in cow |
Pseudocowpox (parapox) |
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What age does bovine papular stomatitis usually affect ? |
Young cattle < 1 year |
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Which virus is associated with rat tail syndrome ? |
Bovine papular stomatitis (parapox virus bovis 1 ) |
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4 DDx for Parafilaria bovicola lesions ? |
Bleeding spots ; insect bites , injury , warbles , granuloma |
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What is besnoitosis spread by ? |
Insect vectors or ingestion Direct spread close contact / needles |
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Which skin lesions are seen with besnoitiosis ? (Vet derm 2009 ) |
Multifocal hypotrichosis and alopecia , lichenification, erythema ,seborrhoea |
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What does this show |
Cysts of besnoitia in the dermis (vet derm 2009) |
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How can besnoitiosis be diagnosed ? |
Skin scrapings ; bradyzoites Biopsy Serological tests using IF, ELISA, western blot Antigen detection (DS farm atlas and vet derm 2009 ) |
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Blue tongue is principally a dz of sheep and cattle are usually sub clinically affected T or F ? |
T |
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Which breeds of cows develop milk allergy ? |
Jerseys , guernseys. Cows sensitised to casein in their own milk |
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Cows can be born with hypotrichosis - which signalling is essential for hair placode formation ? |
Wnt signaling (lars congenital alopecia paper ) |
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How can hereditary Zn deficiency be diagnosed in cattle? |
Hx and Exam Decreased ALP Decreased Serum zn conc Biopsy ; marked diffuse hyperK Necropsy ; hypoplasia of thymus and LNs Also known as hereditary thymic hypoplasia - skin dz , profound innunodeficiency , wasting syndrome due to intestinal malabsorption of zn |
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Clinical Signs of hereditary zn deficiency |
Normal at birth Diarrhoea then develops by 3-8 week Lethargy depression poor appetite Increased lacrimation clear nasal discharge Erythema crusting scaling alopecia start on face spreading to neck flanks perineum ventrum distal limbs mucocutaneous areas |
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There are 3 types of photosensitisation ; what is the most common type in cattle and describe the pathophys |
Type 3 - hepatogenous. Normal end product of chlorophyll Metabolism PHYLLOERYTHRIN is the photodynamic agent. PHYLLOERYTHRIN norm absorbed from GIT and excreted in bile but there can be an accumulation of the substance from obstruction of biliary secretion caused by hepatitis or bile duct obstruction. Chronic fasciolosis commonly linked to type 3 photosens in Ireland (Irish vet journal BCEPP case report 2015 ) |
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Facial eczema in NA, Aus and South Africa is caused by what ? |
Sporidesmin (liver damaging toxin) produced by pithomyces chartarum is associated with damage to biliary epithelium cUsing type 3 photosens . Rare outside of these countries despite cosmopolitan nature of the fungus. Seen in sheep goat cattle. This saprophytic fungus grows commonly on perennial ryegrass which can also cause type 1 photosens ! Head oedema , blisters , excoriation , sloughing.
Droopy and swollen ears , swollen lips and eyelids
SW food animal derm webinar |
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Curly (woolly) coat in Hereford and polled herefords is a phenotypic marker for which disease ? |
Cardiomyopathy |
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What is ergotism caused by ? |
Alkaloids produced by the fungus claviceps purpurea- dyr gangrene and sloughing of distal extremities |
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Which virus has been suggested to play a role in DPHS dermatitis Pyrexia haemorrhaging syndrome ? |
Bovine herpes virus 4 ; journal clinical microbiology aug 2015 vol 53 no 8 |
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Which breeds get rat tail syndrome ? |
Angus Holstein Also some European breeds characterised by colour dilution of hair coat : Simmental , charolais, hereford |
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DDx of Anagen defluxion in the cow |
Hereditary hypotrichoses Follicular dysplasia Vitamin C responsive dermatosis Alopecia areata |
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Which vitamin has potential for treatment of digital dermatitis in cattle ? |
Vitamin D3 ( missing article cell and tissue research 2019). Vit D3 enhances transcription of cathelicidins and beta defensins ( these have direct anti microbial and immunomodulatory activities ) |
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Missing article ; how do oxidative state markers and clinpath findings change in cattle with bovine leukaemia virus ? |
Superoxide dismutase increases ALP, AST, ALT increases Creatinine increases Calcium decreases (Microbial pathogenesis 2019) |
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What are horn flies the vector for |
Steohanofilaria stilesi |
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Which fungal dz can cause abortion in cow |
Aspergillosis |
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Which lesions do you see with phaeohyphomycosis in cow |
Oozing nodules |
