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LAIM > Mastitis > Flashcards

Mastitis Flashcards

1
Q

Bacteria in mastitis resistant to many therapies

A

Staph aureus (Mycoplasma?)

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2
Q

E.coli mastitis in a herd what is the best way to prevent it?

A

Vaccine J5 at dry off, prepartum, postpartum

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3
Q

Off label treatment for mastitis and fever

A

?

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4
Q

Cow with RF S. aureus mastitis, treated twice with pilrymycin in all teats. Now toxic LH. What to do?

A

?

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5
Q

Vaccine for E. coli mastitis

A

J5 Dry-off, 30d after dry-off and after calving

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6
Q

Pseudo-contagious agents of mastitis

A

S. uberis S. dysgalactiae Environmental but can act as contagious

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7
Q

Should mastitis due to Gram + bacteria be treated?

A

Yes, using intra-mammary antibiotics penicillin, erythromycin, pilrymycin

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8
Q

When to treat a Gram - mastitis?

A

In case of bacteremia: ceftiofur, oxytetracycline

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9
Q

Virulence factor of S. aureus in mastitis

A

alpha-hemolysin

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10
Q

Most common pathogens in subclinical mastitis

A

S. aureus + S. agalactiae (coagulase neg staph)

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11
Q

Common bacteria in clinical mastitis

A

coliform and environmental strep

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12
Q

Obligate udder pathogen that is contagious and only colonizes the duct system

A

Streptococcus agalactiae Easy to treat–> penicillin (compensate to treat because it will increase prod)

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13
Q

Most prevalent bacteria in contagious mastitis

A

Staphilococcus aureus Infection of parenchyma, long term Intermittent shedding

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14
Q

Treatment for S. aureus mastitis

A

Cure rates generally low Better to treat primiparas / older cows more dif

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15
Q

Clinical characteristics of mycoplasma mastitis

A

Severe altered mammary secretions (rice in dirty water) No systemic signs of disease Spread from quarter to quarter

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16
Q

Treatment response for mycoplasma mastitis

A

Little if any response to antibiotic therapy Once infected, always infected

17
Q

Which bacteria in mastitis is correlated with poor equipment function?

A

Streptococcus dysgalactiae

18
Q

Most important environmental pathogen in mastitis

A

S. uberis Infection during dry period

19
Q

When to use intramammary antibiotic for coliform mastitis?

A

Sealant at dry off and atb, dry period intramammary atb less effective

20
Q

Clinical presentations of coliform mastitis

A

-Classic: Acute severe mastitis, systemic involvement -Emerging: acute mastitis w/o systemic signs, followed by persistent infection within the gland

21
Q

Contagious bacteria in mastitis

A

Strep. agalactiae Staph. aureus Mycoplasma Corynebacterium bovis

22
Q

Horse-shoe scabs in cow teats

A

Psedocowpox virus Zoonosis hands milking tecs Self-limiting 3-5wk

23
Q

Signs of Bovine herpes mamillitis (BHV-2 and BHV-4)

A

Edema, vesicles, ulcers, scabs

24
Q

Signs of bovine papillomavirus

A

Warts young animals, self-limiting

LAIM (20 decks)

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