What is the term for material left of feed after all water is removed?

• A. Dry Matter
• B. Wet Matter
• C. Organic Matter
• D. Non-Organic Matter

Answer: (A)

The correct choice is the term "Dry Matter," which refers specifically to the components of feed that remain after all moisture has been physically removed. This measurement is crucial in nutrition and feed formulation because it allows for a clearer understanding of the actual nutrient content without the complicating variable of water weight.

When assessing the nutritional value of animal feeds or plant materials, knowing the dry matter content helps in estimating energy, protein, fiber, and other nutrients more accurately. This is particularly relevant in agritechnology, where optimizing feed efficiency and understanding nutrient availability are vital for improving agricultural productivity.

The other terms do not specifically denote the residual materials after moisture removal. "Wet Matter" refers to the total mass of a substance containing water; therefore, it does not provide the same clarity as dry matter. "Organic Matter" encompasses all organic compounds but includes those that may still contain moisture, while "Non-Organic Matter" refers to inorganic materials that are not relevant to feed composition in this context. Thus, "Dry Matter" is the most accurate term to describe the material left after all water is removed from feed.