Complex sentence: Belgian Blue cattle have improved feed conversion ratio (FCR) due to lower feed intake compared to weight gain due to an altered composition of body weight gain which includes increased protein and decreased fat deposition.
Split into simpler sentences: Belgian Blue cattle have improved feed conversion ratio (FCR) due to lower feed intake compared to weight gain. The ability for these animals to have improved FCR is due to an altered composition of body weight gain which includes increased protein and decreased fat deposition.