Lecture 27 & 28: Rabbits v. Rodent (Exam 3) Flashcards
What is a lagomorph
Rabbits & Picas
Describe the skin & hair of rabbits
- Very delicate & can tear or rip when clipping
- Lack foot pads
What do the females rabbits posses
Dewlap
T/F: Rabbits lack foot pads
True
What is pododermatitis
- Infection @ the points of the hock & tips of the third phalanges
What are the glandrous areas
- Nose
- Tip
- Scrotal sacs
- Inguinal folds
What are the arrows point to
Inguinal scent glands
Where are the scent glands in rabbits
- Chin
- Perineal
- Inguinal
What percent of the eyeglobe is the cornea in a rabbit
30%
Describe the eyes in rabbit
- Lateral position of the eye globe in the skull
- Wide field of view by O.U.
- They have binocular vision
What does OU stand for
Ocular universal
What type of vision do rabbits have
Binocular vision
What does OU, OD, & OS stand for
- Ocular universal
- Ocular dexter
- Ocular sinister
What skull does the rabbit skull look a lot like
Equine skull
What is the main diff btw/ rabbits & rodents
- Rabbits have a total of 6 incisors (2 on upper right, 2 on upper left, 1 on the lower right, & one on the lower left)
- Rodents have 1 incisor in each quadrant
What type of fermenters are rabbits
Hind gut fermenters
What is the arrow pointing to
Peg teeth
What is the arrow pointing to
Peg teeth
Label the following
Label the following:
T/F: Rabbits are not prone to colic like how horses are
False they are
Label the following:
Where is the cecum found
Superficially located in the caudal peritoneal cavity
What is the arrow pointing to
Label the following
Label the following:
Where is the descending doudenum at
The right side
Label the following
What is Cecotroph
- Night feces
- They eat their night feces to absorb different nutrients than what is found in pellets they produce in the am
- Allows them to get AAs, lipids, etc. that is needed for survival
- Is a normal behavior
define coprophagy
feces ingestions
Which is cecotropes
The one on the left
Label the following:
Describe the rabbit female repro system
- Have two cervixes
- Main blood supply is the vaginal a & ovarian a.
- Very delicate duplex uterus
Label the following
What is the arrow pointing to
Uterine left horn
What are the differences in rabbit female repro than small carnivores
- 2 cervices
- Abundant adipose in the broad ligament
- Numerous large vessels in the broad lig
- Lacking a thick suspensory lig
What is the arrow pointing to
Ovary of a doe (female rabbit)
Label the following
Describe the male repro system
- Have a fat bed in the inguinal region ( if damaged or torn can cause herniation of the inguinal canal)
- Very elongated testis found lateral to the penis
- Route of the sperm is the same found in canine & equine
Label the following
Label the following
What are the differences in rat/chinchilla skulls compared to rabbit skulss
- Incisors
- Cheek teeth
- Chinchillas have a huge tympanic bulla & external pinna
- Have hyposdont teeth like seen in rabbits & equine; are prone to patho on their teeth too
- Single incisor in ea quadrant
- Rostral surface of the teeth has thicker enamel than the enamel on the lateral/caudal surface (also causes weird shape b/c of uneven wear)
Label the following:
Label the following
Label the following
Who has elodont & hypsodont teeth
- Chinchillas
- Guinea pig
Define elodont
Incisor teeth that are continuously growing through the life of the mammal
Define hypsodont
High crowns to teeth; irregular occlusal surfaces, enamel crests & dentinal grooves, cheek teeth, & both premolars & molars
What is the arrows pointing to
Elodont teeth
Which teeth are elodont in rabbits & rodents
The incisors
What is harder enamel or dentin? Why is this important
Enamel b/c it is thicker & does not wear down as fast as dentin does
What teeth are found in gerbils, hamsters, mice, & rats
- Anelodont
- Elodont
- Brachyodont
What are anelodont teeth
- Pre molars & molars
- Are rooted but they do not grow throughout life
What are brachyodont teeth
- Low crowns seen on the teeth
- Premolars & molars
- Enamel over entire occlusal surfaces
What is the arrow point to
Anelodont & brachyodont teeth
Describe hypsodont teeth
- High crowns to teeth
- Irregular occlusal surfaces
- Enamel crests & dentinal grooves
- Cheek teeth
- Are both premolars & molars
Why do rodents have a white enamel on their incisors while rabbits have a orange/yellow tinge to them
B/c the enamel on the rats incisors is much thinner than the enamel found on rabbits incisors
Describe the digestive system of rodents:
- Simple
- Not fermenters
- Single chamber stomach
- Really short ileum compared to the jejunum
- Have a omnivorous type of digestive system
Label the following
Label the following
What type of uterus do rodents uterus
Duplex
What is something that Norway (lab) rats dont have
A gall bladder
Describe the female repro tract of rodent
- Single cervix
- Elongated uterine horns
Label the following
Label the following
Label the following
Describe the rodent male repro tract
- Testes are very large
Label the following
Label the following
Label the following
How many mammary glands do rats have
- 6 pairs of mammary glands
- 12 glands total
Label the following
What needs to occur in guinea pigs for parturition
- Needs to occur young in life
- Pubic symphysis ligaments open prior to delivery of large feti
- If sow has litter before fusion of the pubic symphysis then cartilage union forms & persists for life
- Cartilage union expands to allow passage of larger feti
- Need to have their first litter by 9 months
Label the following
Describe dystocias in guinea pigs & chinchilla
- Precocious & large feti
- If sow doesn’t have a litter prior to fusion of pubic symphysis by 6 to 9 moths dystocia will be common
- If they don’t have at least one litter before 9 months the pelvic symphysis will ossify making parturition difficult
