Calorie allowances for each cat were
generated by a computer program (PVD
OM-Weight Management Software, Nestlé
Purina PetCare, St. Louis, MO).25 The program’s
calculations assume that changes in
adult body weight are due to changes in adipose
and supporting tissue, which contain
approximately 85% fat and 33.14 kJ/g. Initial
feeding allowances were based on estimated
maintenance energy requirements (293 kJ/kg)
for actual body weight less the calorie deficit
needed to achieve a 1% rate of weight loss.