export_small mammals Flashcards

(59 cards)

1
Q

What animals are in the family Myomorpha

A

Mouselike rodents, hamsters, rats etc

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2
Q

What is the name if the family for porcupine like animals?

A

Hystricomorpha

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3
Q

Insisors continually grow in muridae, what about Hystricomorpha?cheek

A

Cheek teeth

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4
Q

Aradicular teeth are

A

Open rooted, incisors

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5
Q

What vitamin do rodents gain from colonic bacteria?

A

B vit

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6
Q

Describe oxygen-Hb dissociation curve in small mammals

A

Right shift. Off loading increases

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7
Q

Methods of thermogenesis

A

Brown fat below scapula, nesting, shivering, sweat on feet only,

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8
Q

To sex mice, the ano- genital distance is…… In females

A

Shorter

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9
Q

Caviomorphs (chinchillas and GPs) have…….. Litters sizes

A

Small litters,
Long gest
- except hamster (15d)

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10
Q

How is it that rodents teeth can be ground, painlessly?

A

Pulp cavity with nerves below gum line so no pain if ground.

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11
Q

Describe teeth of myomorpha

A

Aradicular
Elondont
No canines
Enamel (buccal edge), dentine (lingual)

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12
Q

Which is longer, the upper or lower incisors?

A

Lower (3x) in myomorpha

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13
Q

Rabbits have what type of uterus? Duplex, bicornate?

A

Duplex

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14
Q

Why do rats have yellow teeth?

A

Fe pigments.

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15
Q

In what species is the urethral orofice sep from vulva in females?

A

Rats

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16
Q

What do gerbils have on their ventral midline which is often mistaken for a tumour?

A

Sebaceous gland

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17
Q

What pirate disease will GPs get after 4days wo added Vit C in diet?

A

Scurvy

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18
Q

Why is the chance of dystocia v high if GPs bred after 7mo

A

Pubic symphysis fuses

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19
Q

In what small furry species are the females larger than the males?

A

Hamsters

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20
Q

What does m pitorius furo mean?

A

Mouse eating smelly thief

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21
Q

What type of ovulators are ferrets?

A

Reflex

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22
Q

What is post oestrous anaemia?

A

Highly seasonal, if not mated oestrogen still released. BM depleted –> anaemia and death. Option is to supress chemically or vasectomise male

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23
Q

Neutering stops beg feedback of GnRH and so FSH and LH rise. What does LH stimulate?

A

Adrenal cells. Neoplasia.

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24
Q

Why are older rabbits more prone to blow flies

A

spinal arthritis common, cant clean and get fly strike

25
Pododermatitis
* Feet becoming infected due to lack of fur covering, * from ammonia-burns in rabbits * from wire wearing off extra-protective covering of feet * bumblefoot in chickens
26
Too much digestible fibre can lead to _____ of the caecum
dysbiosis
27
Alfalfa is not reccomended for adults rabbits because..
v high in Ca and protein | urolithiasis
28
What is milk oil?
Does milk when in stomach, antimicrobial properties.
29
What is 'rabbit birth' called?
Kindling
30
How long is rabbit gestation?
33d
31
Venepuncture sites in rabbits are?
Marginal ear v | Central auricular a
32
Rabbits blink ___ times per hour
10
33
Lens accomodation is poor in rabbits, why?
Spherical lens
34
What structure do you have to be careful of when doing a rabbit enucleation?
Retrobulbar orbital venous sinus
35
What rate do rabbit incisors erupt at?
3mm/wk
36
What rate do cheek teeth erupt?
3mm/mth
37
Where are fluid often administered?
Intraosseous sites
38
What lymphatic tissue is found at caeco-colic jct in rabbits?
Sacculus Rotundus
39
What are caecotrophs?
Partially digested fibre from the caecum, excreted and re-eaten. They have a microbial coat to protect from stomach pH so can ferment in LI further
40
What is the Fusus coli?
Separates proximal and distal colon. Acts as a pacemaker for contractions. Rabbits
41
SI enterochromaffin cells secrete ______, which increase movement of stomach and colon
Motalin, in response to fat
42
How is immunity transfered to rabbit kittens?
Placental transfer and milk
43
What type of uterus do Does have?
duplex/bicornuate
44
Describe Ca balance in rabbits?
* Freely absorbed in SI, wo vit D * if active transport req - vit D needed * kidneys excrete, PTH/calcitonin mediated * cloudy pee - high calcium conc * urolithiasis - diet way too high in Ca, avaid spinach
45
Whats the name for PMNs in rabbits?
Heterophiles
46
how can you tell what stage of oestrous a lab rat is in?
``` vaginal swap/flush methanol fix nuclear stain WBCs = met/dioestrous Lymphocytes = pro/oestrous ```
47
what is the copulatory plug formed from/?
accessory gland secretion, seals vagina (rats)
48
when do mice, rats, hamsters, gerbils and GP reach sexual maturity?
4-6wks old
49
when do chinchillas reach sexual maturity?
8months old
50
what structure in the head are ferrets likely to injure when fighting?
salivary glands, mucoseal common
51
creatinine and urea often rise together in domestic animals, what animal does this not happen in?
ferrets
52
what is the cause of smelly ferrets?
sebaceous glands
53
what orientation is the pupil slit of a ferret and of a cat?
``` ferret = horizontal cat = verticle ```
54
when do ferrets reach puberty?
6-9months
55
what type of ovulators are they?
reflex
56
how long is ferret gestation ?
42d
57
why are indoor kept ferrets prone to adrenal disease?
unnatural photoperiod, very seasonal so pit gland producing lots of GnRH. LH stim adrenal glands continually and alopecia is sign.
58
what is the lifespan of a ferret
12yo
59
what is the BARF diet reccommended for ferrets
bone and raw food diet