Nutrition

Question 1

What types of diets are there? (food type wise)

Answer 1

1) Natural ingridient diets (chow) - agrucultural products, barley most common
2) Purified diets

Question 2

Why/why not use chow?

Answer 2

Why: Its cheap, palatable, nutritious

why not: A lot of variation, single components not removeable, contamination risk

Question 3

Why/why not use purified diets:

Answer 3

Why: Standardized, single components removeable

Why not: aversive, expensive

Question 4

What different sort of formulars are there in regards to food?

Answer 4

fixed formula: They same amount of ingridients which may wary in nutrients

variable formula: same nutrients but wary in ingridients

Open/closed = whether they are open to the public or not.

Question 5

What should be expected of chow batches?

Answer 5

between batch variation.

Question 6

How is pellets made?

Answer 6

1) baking and matrice pelleting:
- Chow mixed with water formed and baked at low temperature = less expensive but higher risk of contamination
2) Extrusion
- at boiling temperatures - low risk of contamination but expensive. Increased digestability.

May come in different pellet sizes.

Question 7

What sort of dietary acces is there?

Answer 7

1) ad libitum

2) restricted

Question 8

How should you store the diets?

Answer 8

Dry, clean and without pest animals. Nutrients degrade at high teemperature/humidity especially vvitamins Aand C.

Question 9

How do you sterilize diets?

Answer 9

for barrier: autoclave - a bit lower than normal because of nutrient quality.

For isolated use: gamma radiation.

Question 10

What are the downsides of fasting animals?

Answer 10

Increased levels of stress hormones
Torpor
general biological functions change - amongst others insulin.