This work was carried out to evaluate the effect of cottonseed meal, urea or starea supplementation to corn silage and ground corn based diets by In vitro disappearance of dry matter, nitrogen and acid detergent fiber method. The treatment with urea presented better results than the other treatments in all studied characteristics, and the treatments with cottonseed meal or starea presented similar results. The observed In vitro disappearance values were: 70.5, 69.8 and 72.7% for dry matter, 61.6, 63.1 and 66.7% for nitrogen and 30.8, 30.0 and 43.1% for acid detergent fiber for the treatments with cottonseed meal, starea and urea, respectively. The corn silage and ground corn diets supplemented with urea showed good in vitro disappearance of dry matter, nitrogen and acid detergent fiber results.
acid detergent fiber; cottonseed meal; in vitro disappearance; protein; starea; urea
