Page 107 - Raw Diet References Book 2019

(a x b) - (c x d) – [(b x e) - (d x f)]/100x g x 1000
ME =
b

[(4.35 x 1250) - (1.65 x 600)] – [(1250 x 24) - (600 x 9)]/100x 1.25 x 1000
ME (kcal/kg) =
1,250

[(18.2 x 1250) - (6.9 x 600)] – [(1250 x 24) - (600 x 9)]/100x 5.23
ME (MJ/kg) =
1,250

ME = 3,312kcal/kg or 13.9 MJ/kg)

With urine collection

[(GE of food consumed - GE of faeces collected) -
ME = GE of urine collected]
amount of food consumed

Example:

a. gross energy of food ......................................................... = 4.35kcal/g or 18.2kJ/g
b. amount of food consumed ............................................. = 1250g
c. gross energy of faeces ..................................................... = 1.65kcal/g or 6.9kJ/g
d. amount of faeces collected ............................................ = 600g
e. gross energy of urine ....................................................... = 0.25kcal/ml or 1.05kJ/ml
f. volume of urine ................................................................. = 1230ml

[(a x b – c x d) – e x f] x 1000
ME (kcal/kg) =
b

[(4.35 x 1,250 - 1.65 x 600) – (0.25 x 1,230)] x 1000
ME (kcal/kg) =
1,250

18.2 x 1,250 – 6.9 x 600 – 1.05 x 1,230
ME (MJ/kg) =
1,250

ME = 3,312kcal/kg or 13.86 MJ/kg

Publication May 2017 47/100