Thiaminase is an enzyme that is found in various plants, bacteria and especially in raw fish. When thiaminase is ingested through food, it destroys a large part of the vitamin B1 contained in the food, which is also known as thiamine. It is therefore important to be careful when BARFing with various types of fish that contain a high proportion of thiaminase. These include carp, mackerel, sardines, pikeperch and smelt. In addition, the preservative disulfite is often used in canned food, which has a similar effect to thiaminase.
If there is a thiamine deficiency , this has a direct effect on the nerves and brain cells and can therefore have serious consequences. The effects can become apparent after just two to four weeks, with dogs and cats salivating more, having problems walking or appearing weak. In these cases, it is important to immediately avoid foods containing thiaminase or to actively promote the supply of vitamin B1. This can usually compensate for the deficiency without long-term consequences. At the same time, we naturally recommend a visit to a veterinary practice for a joint, individual solution.
