MOD 3 - COURSE 4 - PT 3

Question 1

What are some important storage conditions for feed?

Answer 1

• suitable storage until expeiry date
• diet present in cages - must be discoarded regularly and replaced with fresh food
• high fat diet - provided fresh food every day
• during transport - diet - remain dry and protected from temp
• no chemcial = should be transported with food -
• food must be inspected upon arrival

Question 2

how can food be sterilized?

Answer 2

• by gamma-irradiations, autoclave
• reduce microbiological contaminations

Question 3

when is sterilization important for aniaml food

Answer 3

when used for barrier units

Question 4

why can sterilization cause problems

Answer 4

• reduce contents of unstable nutrients i.e. vitamina A ad E
• so this will need to be adjusted for in the feed

Question 5

what is pelleted diets

Answer 5

• usually standard diets used in most labs made from natural ingredients
• can be manufactored according to zixed or variable formula

Question 6

whats the difference between fixed an dvariable formular for feed

Answer 6

• fixed formula - recipie doesnt change for partcilular diet
  variable formula - final product = kept as constant as possible - amount of individual ingredients - adjusted for variation in nutrient level of raw material

Question 7

what are the forms of natural ingredient diets

Answer 7

• meal form, extruded or expanded as pellets -
• the extruded form = conventional pellet

Question 8

what are the positives and negatives of expanded pellets

Answer 8

• as they are more voluminous - claimed that they reduce food intake - but still with higher avilability of nutrients , increase food coversion mreduce microbial counts and reduce wastage as compared to teh conventional extruded pellets

Question 9

whats a purified diet

Answer 9

food = formulated with purified macronutrients, pure chemcials adn various refined injgredients

Question 10

when is a purified diet used?

Answer 10

• used when investigating diet effects

Question 11

what are the disadvantages of using a purified diet

Answer 11

• lower palatability - need for acclimitization off normal food
• may be some unknown nutirents that this is created a shortage - i.e. some natural contaminents - chromium and vanadium
• can be hard to pellet this diet - so there can be increased spillage (can be given as powder)

Question 12

what are the advantages of a purifed diet

Answer 12

• no adverse contaminants/ undesirable substances i.e. chemicals, pesticides, plant toin, mycotoxin, heavy metal nitrates, nitrite, bacteria, bacterial toxins