Effect of FAEB activity on in vitro dry matter disappearance (IVDMD) of control and various transgenic lines incubated with mixed ruminal fluid. Bars indicate standard error. *Differs to control at P < 0.05. Repeated two times with triplicate samples per incubation. A, apoplast; ER, endoplasmic reticulum; FAEB, type B ferulic acid esterase; IVDMD, in vitro dry matter disappearance; V, vacuole.