Biotin is one of the sulfur-containing, water-soluble B vitamins necessary for the production and utilization of fats and amino acids and the integrity of skin and claws. Mammals are unable to synthesize biotin so supplementation should be considered if optimum skin and coat health is a goal.

Caution should be used when feeding raw egg white to either the dog or cat. Raw egg white contains a compound (Avidin) that binds tightly to biotin, resulting in its decreased absorption. Cooking the egg white inactivates the avidin. Also, the amount of biotin found in egg yolk is more than adequate to offset the potential loss of biotin. My recommendation is to only feed whole cooked eggs, never raw eggs to pets.

Functions of Biotin:

  • Biotin is a cofactor for enzymes involved in the metabolism of protein, fat and carbohydrate
  • As a coenzyme, Biotin plays a role in deamination, generating energy from amino acids
  • The five carboxylase enzymes in mammalian tissue requiring biotin are: acetyl coenzyme A carboxylase, pyruvate carboxylase, propionyl CoA carboxylase, B-methylcrotonyl CoA carboxylase and methylmalonyl CoA carboxylase