Other endemic diseases Flashcards
Route of transmission for Leptospirosis
Bodily fluids-Urine/Milk/Semen
Penetrates mm
Does leptospirosis have chronic carries with intermittent shedding
Yes
What is the highest risk factor for leptospirosis
Cattle having access to waterways
C/S of Leptospirosis
Acute phase usually subclinical
Reproductive disease- Infertility/Abortion/Low conception
Milk drop/Flabby bag
Dx of Leptospirosis
Dark ground microscopy
PCR
Serology ELISA- Rising titre in paired samples taken 14 days apart
Tx of Lepto
Antibiotic- Dihydrostreptomycin 25 mg/kg (repeat after 7 days)
Control of Lepto
- ID and removal of carrier
- Vaccination
- Test, treat and vaccinate replacements
- Water supply hygeine
Most common Salmonella Serova infecting UK cattle
S.enterica Dublin
Route of transmission for Salmonella
Faeco-oral transmission
S.enterica Dublin C/S
Abortion
Acute/Chronic enteritis
Fever/Severe diarrhoea and dehydration
Septicaemia/Rapid death- Neonatal calves
Poor calf health
Dx of Salmonella
Faecal sample NOT swab
PM- culture fetal stomach content
Serology- Calves 3-10m
Herd Level- slurry samples/bulk milk tank
Best group of animals to test for salmonella prevalence in herd
10 youngest calves over 12 weeks that show clinical signs
Tx of Salmonella
Most antibiotics but may turn animal to carrier state
Control of Salmonella
Maintain a closed herd or
Source new stock from high health status farms
Quarantine all in-coming stock for at least 4 weeks
Avoid shared equipment, bulls and grazing areas
Maintain good fences
Protect feed and bedding from vermin
Use mains water (not natural source)
Provide farm clothing for visitors or clean and disinfect boots/clothing before entering/leaving.
Investigate abortions, scour cases or other illnesses as early as possible.
Consider herd vaccination with Bovivac S (MSD)
Name of vaccine for Salmonela
Bovivac S- only licensed one
