Enables long-chain fatty acid binding activity and long-chain fatty acid transporter activity. Involved in fatty acid metabolic process; intestinal absorption; and long-chain fatty acid transport. Located in apical cortex; microvillus; and plasma membrane. Human ortholog(s) of this gene implicated in alcoholic liver cirrhosis; carotid stenosis; coronary artery disease; end stage renal disease; and obesity. Orthologous to human FABP2 (fatty acid binding protein 2). [provided by Alliance of Genome Resources, Apr 2022]