Researchers studied how feeding ensiled urea-treated wheat straw to ruminant animals affects nitrogen utilization in their stomachs. They mixed urea and wheat straw in different ratios, sealed them in containers, and let them ferment for 9 days. The nitrogen content in the wheat straw increased after ensiling, with a significant portion becoming bound nitrogen. The cellulose content decreased, while other fiber components increased. The digestibility of dry matter and nitrogen in the rumen improved with ensiling. However, the in vitro digestion process did not significantly affect the release of bound nitrogen. The study highlights the potential for improving the nutritional value of low-quality roughages for animal feed through proper fermentation techniques.