Diverse Species Flashcards
Name a species from the Mustelidae group
Ferret - Mustela putorius furo
What is the effect does the flexible spine of the ferret have on handling?
Support the spine since spinal injuries can occur , particularly in heavy hobs or gilts
What is a hob?
A male ferret
What’s is the effect of the narrow thoracic inlet of the ferret?
They are less adaptable to respiratory tract problems.
Describe the teeth of the ferret
All rooted, similar set up to cats, erupt from 3-4 weeks and all permanent by 50-70 days
Which particular structures of the head are prone to damage with ferrets fighting?
Salivary glands
What type of feeders are ferrets?
Obligate Carnivora
What is the maximum distension volume of a ferrets stomach?
50ml/kg
How does creatinine alter with increased urea during kidney disease in the ferret?
It doesn’t
Why do ferrets have a strong musty odour?
They have very active sebaceous glands
What is the effect of the lack of sweat glands in the ferret?
They are sensitive the heat stroke
Why is the anal sacculectomy illegal in the Uk?
Against the 5 freedoms = unethical
What is the best indicator of cardiac output in the ferret?
Urine output
Where would you venepuncture a ferret?
Cephalic or jugular vein
What percentage of a ferrets body weight is blood?
5-7%
What age do ferrets go through puberty?
6-9 months
How long is the gestation of a ferret?
42d
Ferret ovulation?
Reflex
What type of uterus do ferrets have?
Bicornuate
What is the effect of continued oestrus in the ferret?
Continued high exposure to oestrogen.Bone marrow depressions , anaemic and death
How are the effects of continued ovulation in ferrets combatted?
Use a vasectomised hob or always have litters
Endocrine disease in ferrets?
Alopecia
What is deslorin?
A gnrh analogue
What species are included in the myomorphs?
Mice, hamsters, gerbils
What does aradicular?
Open-rooted
Eleodont
Continually growing
Outline the structure of the rodent incisor.
Hard vs soft enamel = chisel shaped
What is coprophagy?
Ingestion of faecal pellets to gain nutrients
What effect of a high larynx have on rodent breathing?
Nasal breathers
Which of the sexes has a longer ano-genital distance?
Male
Draw and describe the structure of Rodent incisors.
Chisel shaped. Enamel on the buccal surface and dentine on the lingual surface.
How do rodents achieve efficient respiration?
Short airwaysIncreased respiratory rateIncreased alveoli and thinner wallGood respiratory compliance
Which anatomical feature is used to sex rodent?
Ano-genital distance.Longer in males
What is the difference between bicornate and duplex reproductive systems?
Duplex - two uterine horns and two cervicesBicornate - two uterine horns opening into one uterine body and one cervix.
What is the significance of the copulatory plug?
Deposited by the male after mating, “seals” sperm in the reproductive tract, female is more likely to get pregnant.
What nutrient do rodents gain through coprophagy?
B vitamins
Name the anatomical features of the rodent GIT which prevent them from vomiting.
Strong stomach ridgeOesophageal sphincterCrural slingDiphragm sling
What is the appearance of caecotrophs?
Smaller than regular droppings and covered in mucus
A vaginal flush of a rodent shows leucocytes on examination. Which phases of the oestrus cycle could this female be in?
MetoestrusDioestrus
Which taxon of rodent has large litters, altricial young and short gestation?
Myomorphs
Guinea pigs are an example of which taxonomic group of rodent who have characteristically long gestation lengths?
Caviomorphs
What is the gestation length of a chinchilla?
111 days
What is the gestation length of a guinea pig?
59-72 days
What is the gestation length of a mouse?
20 days
What is the dental formula of the ferret?
I3/3 C1/1 P3/3 M1/234 in total
What angle of vision do rabbits have?
270o
Name the extraoccular muscle only present in the rabbit and state its function.
Depressor palpebraeDepresses the lower eyelid
Rabbits do not possess a tapetum lucidum. True or False.
True
How many times in an hour would a rabbit blink?
10
3mm of growth is seen in incisors of the rabbit per _____ and molars per _____
weekmonth
Which type of tissue is found in the saccule rotundus and veriform appendix?
Lymphoid tissue
Why are caecotrophs covered with mucus?
To avoid degradation from the low pH of the stomach.
Why is the rabbits heart prone to ischemia and infarction?
Poorly developed collateral citculation
Which cell type releases motilin?
Enterochromaffin cells