Rattus

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What are the different types of rats?
- Sprague-Dawley
- Wistar
- Long-Evans (hooded rat) - most common pets
Rats are the _____ most used research animal.

2nd
Are rats just a large mouse?

no
What kind of research are rats typically used for?

psychological research
Do rats fight when they are together?

no
Do rats have a gall bladder?

no
What happens to albino rats as they age and why?

they turn yellow due to sebaceous glands
What happens to incisors as rats age?

turn orange
What is the average life span of a rat?

about 3 years
How are rats like horses?

they are hind gut fermenters
How can we tell the difference between males and females in rats?
- males anogenital distance is longer
- may also see testicles in males when they are older
When do rats reach puberty?

6 - 8 weeks
Where is the Gambian rat from and what is the problem with this rat?
- it is from Africa
- involved in the spread of monkey pox...transmitted monkey box to prairie dogs
At what age do we start breeding rats?

3 months old
Are rats continuously polyestrus?

yes
Do rats experience postpartum estrus?

yes
How long is gestation in rats?

21 days
How many are in a litter of rats?

6 - 12
When do rats open their eyes after being born?

7 - 14 days
When are rats weaned?

3 weeks
What do we do if a rat is experiencing dystocia?
- lubricate a dosing needle and stick it in the vulva...the lubricant will get on the baby that is stuck and help make it slippery to slide out
- if this doesn't work then a C-section will have to be performed
How do we restrain rats?
- grab over neck and shoulders
- thumb and forefinger on both sides of mandible
- hold tail and hind legs with other hand
- mesh gloves are used in labs
Should we scruff rats?

no
Can we put an E-collar on a rat?

yes
Where are the different places to collect blood in a rat?
- lateral tail vein
- ventral tail artery
- orbital sinus (anesthetize)
- vena cava (anesthetize)
- cardiac puncture
Which is the most common place to collect blood from a rat?

lateral tail vein
What do we use to collect blood in rats?

heparinized syringe or capillary tubes
What are different routes of medicating rats?
- oral route
- SQ
- IP
How do we medicate a rat IP?
- head down
- right caudal quadrant
- needle at 20 degree angle to skin
Are respiratory diseases common in rats?

yes
What are some different causes of respiratory diseases in rats?
- mycoplasma pulmonis
- sendaii virus
- strep pneumonia
- corynebacterium kutscheri
When do we see acute pneumonia in rats and what causes it?
- in young rats
- due to strep
What are the clinical signs of acute pneumonia in rats?
- dyspnea
- snuffling
- abdominal breathing
- may see purulent exudate
- may see sudden death
What are the common cause of chronic respiratory disease in rats?

mycoplasma pulmonis
What are the clinical signs of a chronic respiratory disease in a rat?
- snuffling
- discharge
- hunched posture
- roughened coat
- red tears
- head tilt
In addition to respiratory diseases, what are some other common diseases in rats?
- ulcerative dermatitis - scratching/staph infection
- mammary fibroadenomas
- overgrown incisors
- chronic nephrosis - older rats
- sialodacryoadenitis
- chromodacryorrhea
- ring tail
- wounds/abscesses
What is Sialodacryoadenitis?

contagious viral disease in rats
What are the clinical signs of sialodacryoadenitis?
- swelling of cervical region
- increased size of salivary gland and nodes
Is there a treatment for sialodacryoadenitis? How long does it take for rats to recover?
- no treatment
- 10 - 30 days
What is Chromodacryorrhea?
- red tears
- secretions from harderian gland
- see dried blood at nares
What happens to chromodacryorrhea under a wood's lamp?

will fluoresce
What causes chromodacryorrhea?

acute onset of stress
When do we see ring tail in rats?

in weaning rats
What causes ring tail in rats?
- humidity below 50%
- avasular necrosis
How do we treat wounds/abscesses in rats?
- lance, drain, flush
- hot pack
- antibiotics
Do rats make good pets?

yes

Author

kris10leejmu

195569

Card Set

Rattus

Description

Exotic Animals

Updated

2013-01-27T03:16:23Z

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