Background: Trichobezoars represent a frequent digestive issue in cats, often resulting from excessive hair ingestion during grooming. This study evaluated the effects of keratinase-psyllium husk as a feed additive to prevent trichobezoar formation. 
 
Methods: The trial included 20 healthy adult cats, randomly divided into three groups: KP-L (low-dose keratinase-psyllium husk), KP-H (high-dose keratinase-psyllium husk) and Control (standard diet without additives). Each group received their respective diet for pre-trial 3 days and a formal trial 14 days. Parameters analyzed included keratin degradation, fecal trichobezoar excretion and blood indicators to assess overall health status. 
 
Result: The findings demonstrated that cats in the KP-H group exhibited significantly higher keratin degradation and increased fecal trichobezoar excretion compared to the KP-L and Control groups. Both KP-L and KP-H groups showed improved hair elimination, though the effects were dose-dependent. No adverse effects on hematological or biochemical parameters were observed, indicating the safety of the additive. The study suggests that dietary supplementation with keratinase-psyllium husk effectively enhances hair degradation and trichobezoar excretion in cats, with higher doses showing greater efficacy. This additive presents a promising preventive approach for managing hairball formation in feline diets. 
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The Effect of Keratinase-psyllium Husk Formulated as Feed Additive for Trichobezoar Prevention in Feline