What is the function of the small intestines in ruminant animals?

In ruminant animals, the small intestine plays a crucial role in digestion and nutrient absorption. After the initial fermentation of food in the rumen, the partially digested material moves to the small intestine, where enzymes break down carbohydrates, proteins, and fats. The walls of the small intestine are lined with villi and microvilli, which increase the surface area for efficient absorption of nutrients, vitamins, and minerals into the bloodstream. This process is essential for the overall health and energy supply of ruminants.