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VET 111 Week 9
Ch 9 Chinchillas
| Question | Answer |
|---|---|
| What order are chinchillas under? | Caviomorph |
| T/F: Caviomorphs are New World rodents | True |
| What are chinchillas closely related to? | Guinea Pigs, Degus, Porcupines |
| What family do chinchillas belong to? | Chinchillidae |
| What are the two species of chinchilla? | Short-tailed and Long-tailed |
| T/F: Chinchillas are nearly extinct in the wild, classified as "critically endangered" | True |
| Where are chinchillas native to? | South America, Andes Mountains |
| What is the average weight of Chinchilla lanigers? | 400-600 g |
| How long are Chinchilla lanigers? | 10-14 inches |
| Which studies are chinchillas used for? | Auditory and Infectious disease studies |
| What is the dental formula for chinchillas? | 2(I 1/1, C 0/0, P 1/1, M 3/3) |
| T/F: Chinchillas can vomit | False; they cannot vomit |
| T/F: Chinchillas are coprophagic | True |
| T/F: Sexing chinchillas is easy | False; Sexing can be difficult as external genitalia are similar |
| When do female chinchillas hit puberty? | 4-5 months of age |
| When do male chinchillas hit puberty? | 7-9 months of age |
| When is the main breeding seasons for chinchillas? | Between November and May |
| What is the gestation period for chinchillas? | 111 days |
| What is the average litter size for chinchillas? | 2 |
| When do chinchillas kits begin to eat solid food? | Within 1 week of birth |
| When are chinchilla kits weaned? | 6-8 weeks of age |
| What temperature should chinchillas environment be at? | 61-70 degrees F |
| What should the humidity for chinchillas be set to? | 30%-60% |
| How many air changes per hour for chinchillas? | 10-15 |
| How much light per day for chinchillas? | 14 hrs |
| T/F: Chinchillas are housed alone | False; chinchillas should be in pairs or small groups |
| What should be provided to chinchillas to maintain their coat? | Dust bath |
| How much hay should chinchillas be provided? | ad libitum |
| How much water should chinchillas be provided? | ad libitum |
| How much of a chinchillas circulating blood volume can be withdrawn every 2-3 weeks? | 10% |
| Which routes are used for small blood collection in chinchillas? | Cephalic, lateral saphenous, or femoral vein; ventral tail artery |
| Which routes are used for large blood collection in chinchillas? | Jugular vain, cranial vena cava, transverse sinus or cardiac under anesthesia |
| How is urine collected in chinchillas? | Gentle digital pressure on the bladder, cystocentesis, metabolic cage |
| What do chinchillas do when annoyed? | Projectile urinate |
| What routes are used for IM drug administration? | Lumbar, Quadriceps, Semitendinosus |
| What route is used for IV drug administration? | Peripheral vessels |
| Where are SC drugs administered? | Between shoulders |
| What is the drug amount that can be administered SC in chinchillas? | 8 mL |
| What is the drug amount that can be administered IM in chinchillas? | No more than 0.3 mL |
| What is the drug amount that can be administered IP in chinchillas? | Up to 10 mL |
| Which anesthetic is used for noninvasive procedures or chemical restraint? | Ketamine |
| What anesthetic is given to chinchillas to decrease salivary secretions? | Atropine |
| What technique should be utilized in chinchilla surgery? | Aspetic |
| What do chinchillas suffer from during surgery? | Euthermia |
| How often should chinchillas be turned nonambulatory? | Every 30 minutes |
| Which modalities have been adapted to be used in small animals? | Digital X-ray, MRI, CT, PET |
| What are the most common causes of disease in chinchillas related to? | Poor husbandry and feeding inadequacies |
| Which age of chinchillas are prone to diseases of lower respiratory tract or pneumonia? | Young |
| What are the predisposing factors for respiratory disease in chinchillas? | Overcrowding, High humidity, Drafty housing, Poor ventilation, Stress |
| What family of drugs are best for treating respiratory diseases in chinchillas? | Tetracycline |
| Where are bite wounds and abscess formation seen with chinchillas? | Group housed chinchillas |
| T/F: Enteritis is often acute | True |
| What are the symptoms of enteritis? |