feed formulation

Question 1

When formulating diets you must

Answer 1

1. know requirments
2. know levels of nutrients in foods
3. put feeds into combination
4. choose least cost option

Question 2

what is Near infrared spectrometers (NIR) used for

Answer 2

quick analysis on quality of ingredients

Question 3

what is crude protein and digestive lysine need for broiler age 1-10d

Answer 3

CP = 23
lysine = 1.2-1.3

Question 4

crude protein and digestive lysine required for grower 10-20d

Answer 4

CP = 22
lysine = 1.1

Question 5

crude protein and digestive lysine needed for finisher 22-28d

Answer 5

CP = 19.5
lysine = 0.95

Question 6

advantages of byproducts

Answer 6

increased crude protein and crude fibre concentrations

Question 7

what has major affect on by-product quality

Answer 7

extraction

Question 8

major problems processing by-products

Answer 8

minimal effect on carb and fibre content
effects protein quality by maillard reaction
reduced lysine content with increased heat during processing

Question 9

evidence of poor by-product

Answer 9

darkened colour (overheated)
caking and lumpy (moulds)
maillard reaction

Question 10

what are the protease inhibitors

Answer 10

trypsin and chymotrypsin

Question 11

what do protease inhibitors do

Answer 11

reduce protein digestibility
peptides capable of forming stable, inactive complexes with proteolytic enzymes