The study looked at feeding different mixtures of mustard straw and green oat fodder to crossbred calves to see how well they digested and utilized the nutrients. They found that a 50:50 mix of mustard straw and green oat fodder was the best for the calves in terms of nutrient composition, intake, and digestibility. As the ratio of green oat fodder decreased, the calves had lower intake and digestibility of nutrients. In conclusion, a diet with equal parts mustard straw and green oat fodder is the most beneficial for crossbred calves.