Which vitamin is crucial for blood coagulation in livestock?

Vitamin K is essential for blood coagulation in livestock as it plays a critical role in synthesizing proteins required for blood clotting. Without adequate vitamin K, animals can experience excessive bleeding and difficulty in healing from injuries due to impaired clot formation. This vitamin acts as a cofactor in the enzymatic reactions that modify certain proteins, enabling them to bind calcium, which is vital for the coagulation cascade.

The other vitamins mentioned, while important for various bodily functions, do not have the same direct involvement in the blood coagulation process. Vitamin A is essential for vision and immune function, vitamin C is important for collagen synthesis and immune response, and vitamin E serves as an antioxidant, protecting cells from damage. However, none of these vitamins directly facilitate the blood clotting process like vitamin K does.