Changes

#'''Growth''': Inadequate protein intake as well as deficiencies in any single essential amino acid will result in poor growth in puppies and kittens or failure to gain weight<ref name="NRC"/>.

#'''Growth''': Inadequate protein intake as well as deficiencies in any single essential amino acid will result in poor growth in puppies and kittens or failure to gain weight<ref name="NRC"/>.

#'''Maintenance''': Inadequate protein intake will result in weight loss in adults due to an inability to maintain a positive nitrogen balance and replace amino acids lost during whole body protein turnover<ref name="Bourse">Biourge V, et al. Long-term voluntary fasting in adult obese cats: nitrogen balance, plasma amino acid concentrations and urinary orotic acid excretion. J Nutr 1995;124:2680S-2682S.</ref><ref name="Wannemacher">Wannemacher RW and McCoy JR. Determination of optimal dietary protein requirements in young and old dogs. J Nutr 1966;88:66-74.</ref>. Dogs are able to down-regulate hepatic enzymes used in amino acids metabolism, gluconeogenesis, and urea production and can adapt to low protein intakes. Cats are unable to adapt to low protein or protein-free diets and can develop hepatic lipidosis during periods of starvation<ref name=Biourge"/>.  

#'''Maintenance''': Inadequate protein intake will result in weight loss in adults due to an inability to maintain a positive nitrogen balance and replace amino acids lost during whole body protein turnover<ref name="Bourse">Biourge V, et al. Long-term voluntary fasting in adult obese cats: nitrogen balance, plasma amino acid concentrations and urinary orotic acid excretion. J Nutr 1995;124:2680S-2682S.</ref><ref name="Wannemacher">Wannemacher RW and McCoy JR. Determination of optimal dietary protein requirements in young and old dogs. J Nutr 1966;88:66-74.</ref>. Dogs are able to down-regulate hepatic enzymes used in amino acids metabolism, gluconeogenesis, and urea production and can adapt to low protein intakes. Cats are unable to adapt to low protein or protein-free diets and can develop hepatic lipidosis during periods of starvation<ref name="Biourge"/>.