Name that Nasty
This virus causes Bovine Viral Diarrhoea and has a non-cytopathic and cytopathic form.
What is Bovine Viral Diarrhoea Virus (BVDV)?
The main reservoir for BVDV in herds.
The main reservoir for BVDV in herds.
Common clinical signs of Johne’s Disease in cattle include weight loss and this fluid imbalance-related sign.
What is submandibular oedema (bottle jaw)?
This BVDV diagnostic test detects virus antigen and is most useful for identifying PIs.
What is the Antigen ELISA?
The first step in controlling BVDV in a herd.
What is identifying and removing PI animals?
This bacterium causes Johne’s Disease in ruminants.
What is Mycobacterium avium subspecies paratuberculosis (MAP)?
The most common route of MAP transmission between animals.
What is the faecal-oral route?
This syndrome in BVDV PI animals involves erosive oral lesions, watery bloody diarrhoea, and high mortality.
What is mucosal disease?
This Johne’s test detects antibodies in serum or milk but has limited sensitivity in early disease.
What is the antibody ELISA?
For MAP control, separating calves from adult cattle helps reduce this type of transmission.
What is horizontal transmission?
This type of infection in BVDV leads to lifelong viral shedding and immunotolerance.
What is persistent infection?
The form of BVDV transmission where the dam infects the fetus through the placenta.
What is vertical transmission?
Johne’s Disease in small ruminants usually lacks this hallmark sign seen in cattle.
What is diarrhoea?
A BVDV PI calf will usually test negative on this kind of test.
What is an antibody test (AGID or ELISA)?
This action should be taken with a BVDV PI calf showing signs of mucosal disease.
What is euthanasia?
This disease may be subclinical for years and is a risk factor (but not proven cause) of Crohn’s disease.
What is Johne’s Disease?
Calves are at highest risk of MAP infection during this period.
What is the first 30 days of life?
A typical GI sign seen in transient BVDV infection.
A typical GI sign seen in transient BVDV infection.
A major limitation of MAP diagnostic tests in subclinical cows.
What is low sensitivity?
Name one key biosecurity strategy to prevent MAP introduction.
What is purchasing from MAP-free herds / maintaining a closed herd?
This term describes animals infected in utero with non-cytopathic BVDV between 40–120 days of gestation.
What are persistently infected (PI) calves?
This term describes cows or calves with unusually high levels of MAP shedding, whether clinical or subclinical.
What are super shedders?
This reproductive outcome may result if a cow is infected with BVDV during early gestation.
What is abortion or embryonic loss?
DAILY DOUBLE!!!
This herd-level test helps detect current BVDV infection by identifying viral DNA in milk.
What is bulk milk PCR?
This vaccine for small ruminants offers 95% protection but causes severe human reactions if self-injected.
What is Gudair® vaccine