Vitamin B1 (thiamine) was the first member of the B-vitamin group to be discovered. As an essential component of the coenzyme thiamine pyrophosphate (TPP), it plays a central role in carbohydrate and energy metabolism and is also essential for normal nerve function and the maintenance of appetite.

In animal feed, vitamin B1 is commonly supplemented as thiamine hydrochloride (≥98% purity) or thiamine mononitrate (≥98% purity). Products for the Chinese market may be manufactured in accordance with GB/T 7295 for thiamine hydrochloride and GB/T 7296 for thiamine mononitrate. Thiamine mononitrate generally offers greater stability and is particularly suitable for feed processing involving pelleting at elevated temperatures.

Vitamin B1 deficiency in swine and poultry can lead to reduced appetite, impaired growth, and neurological disorders such as polyneuritis, with characteristic signs including “stargazing” in affected birds. In aquatic species, deficiency may result in impaired equilibrium and increased mortality. Vitamin B1 is therefore a fundamental micronutrient used in feeds for swine, poultry, ruminants, and aquaculture species, supporting normal metabolism, neurological function, and overall animal performance.