It all breaks down to ....
Proteins - essential to growth and repair of muscle and other tissues
Fats - one source of energy and important in relation to fat soluble vitamins
Carbohydrates - our main source of energy
Minerals - those inorganic elements occurring in the body and which are critical to its normal functions
Vitamins - water and fat soluble vitamins play important roles in many chemical processes
Water - essential to normal body function - as a vehicle for carrying other nutrients ...since we..and horses, cows,etc are made of mostly water.
If its in cattle, yes it can make it taste better. Basically you want to fatten up livestock as fast and as big as you can to make better profits.