ALAT Animal Husbandry and Environment 3

Question 1

What type of bedding should be avoided for rodents due to potential hepatic enzyme induction?

Accepted Answer

Cedar and untreated softwood shavings

Answer

Cedar shavings and untreated softwood contain aromatic hydrocarbons that can induce hepatic microsomal enzymes, potentially altering drug metabolism.

Question 2

What is the recommended relative humidity range for most laboratory animal housing areas?

Accepted Answer

30-70%

Answer

The Guide recommends 30-70% relative humidity. Levels outside this range can cause respiratory problems, ringtail in rodents, or promote microbial growth.

Question 3

What is the purpose of a sentinel animal program in a laboratory animal facility?

Accepted Answer

To detect infectious agents present in the animal colony

Answer

Sentinel animals are purposely exposed to soiled bedding to detect infectious agents through periodic serological testing and necropsy.

Question 4

Why must autoclaved cages cool completely before housing animals?

Accepted Answer

Hot surfaces can cause thermal burns and heat stress in animals

Answer

Autoclaved cages retain significant heat. Placing animals in hot cages can cause thermal burns to feet and skin, acute heat stress, and potentially death.

Question 5

What enrichment item serves as both a gnawing substrate and a shelter for mice?

Accepted Answer

Cardboard or compressed paper hut

Answer

Cardboard or compressed paper huts provide dual enrichment: they serve as shelters and as gnawing/shredding substrates for dental health and natural behaviors.

ALAT - Assistant Laboratory Animal Technician Practice Test

ALAT - Assistant Laboratory Animal Technician Practice Test

ALAT Animal Husbandry and Environment 3