Cattle Diarrhea-Bittar Flashcards

1
Q

How many L of colostrum are required by a neonatal calf in the first two hours of life?

A

4L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the most important defense of neonatal diarrhea?

A

Colostrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T/F: only the first milking is good for Ig transfer to the calf

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T/F: IgG dramatically falls after calving (by 14 hours only 1/3 original level)

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are some cons of colostrum?

A

Lymphocytes can cross into the calf’s bloodstream, insulin-like growth factor, IgA (local immune protection)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How long is colostrum good for if it is stored at room temp, refrigeration and frozen?

A

Room temp: 1 day
Refrigeration: 1 week
Frozen: indefinitely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the pathogenesis of E. Coli in calves?

A

K99 fimbriae adherence on enterocytes (heat stable enterotoxin)
Physiologic high pH in abomasum (allows bacterial growth) –> unhygienic conditions –> inadequate colostrum protection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are is a potential result of calf diarrhea associated with E. coli?

A

Can lead to calf scours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the gold standard dx test to evaluate assessment of passive transfer?

A

Radioactive immunoassay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which FPT evaluation test is NOT influenced by inflammation and dehydration?

A

Na-sulfite precipitation test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What test is commonly done in farm settings to evaluate FPT?

A

TP- should be above 5.5 g/dL within 1st week of life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What type of fluids do you want to administer to a calf with diarrhea?

A

Alkalinizing fluids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are some prevention methods for E. coli?

A

Coliform mastitis vaccine
Excellent hygiene
Proper management

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does Rotavirus do to the GI system?

A

Damages intestinal villi, maldigestion/malabsorption (voluminous diarrhea), bloody or mucoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

T/F: Diarrhea will be continuous even after pathogen is under control with Rotavirus patients

A

TRUE- takes about 7-10 days for new enterocytes to mature and differentiate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

If a calf presents in lateral recumbency for a potential Rotavirus infection, what should your first step be?

A

TREAT FIRST

Do not try to confirm suspicions of dx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which strain of E. coli is very pathogenic to humans and causes enterohemorrhagic issues but is asymptomatic in cattle?

A

E. coli 0157:H7

18
Q

What age does Coronavirus typically occur in?

A

14-20 days of age

19
Q

What does Coronavirus commonly cause?

A

Severe intestinal pathology leading to chronic malabsorption and progressive emaciation
Common causative agent of scours in calves

20
Q

T/F: Sporulated cryptosporidium oocysts in feces if ingested is immediately infective

21
Q

T/F: Cryptosporidium starts early in neonatal life because there is no incubation period

22
Q

What is the dx method of choice for cryptosporidium?

A

Fecal flotation

23
Q

What is the causative agent of overeating disease?

A

Clostridium perfringens

24
Q

What is a common predisposing cause of overeating disease?

A

Larger than normal amount of CHO and protein in feed supports germination of spores

25
Which type of Clostridium perfringens causes hemorrhagic bowel syndrome?
Type A
26
What toxin is associated with Clostridium perfringens type D?
Epsilon toxin
27
What is the 3rd most lethal clostridial toxin after Botulism and Tetanus?
Clostridium perfringens Type D
28
What is a stress related cause of calf diarrhea and can be commonly due to environmental contamination
Salmonellosis
29
Where does Slamonella localize in the body?
Gallbladder and spleen
30
What is a dx characteristic seen in a calf with salmonella?
GOLDEN YELLOW DIARRHEA
31
What is the tx for Salmonella?
Ab and flunixin meglumine
32
What are common causes of diarrhea in adult cows?
``` Winter dysentery (Coronavirus) Johne's Disease Copper deficiency Ostertagiasis Coccidiosis Rumen acidosis Clostridium perfringens types A&B ```
33
If you have an adult cow presenting for explosive diarrhea, what are you concerned of?
Winter dysentery- coronavirus | Spontaneous recovery in 3 days
34
What is the causative agent of Johne's disease?
Mycobacterium paratuberculosis
35
What is seen in a cow affected with Johne's disease?
Emaciation and chronic diarrhea
36
T/F: The incubation period for Mycobacterium paratuberculosis is 2-5 years, which is why it is commonly seen in adult cattle
TRUE
37
What is the most common cause of diarrhea in Johne's disease patients?
PLE
38
What are the classic signs of a patient with Johne's disease?
Intermittent/continuous diarrhea and severe weight loss
39
What pathology is found at necropsy in a patient with Johne's disease?
Corrugated mucosa particularly at the ileum | Enlarged mesenteric LN
40
What is the gold standard dx test for Johne's disease?
Fecal culture (long time to wait)
41
What is the tx for Johne's disease?
No tx, cull positives and offspring