Eden has observed that some of his sheep are losing weight. He wants to increase their weight in order to gain more profit from their meat. Which feed additive should he use? concentrates antibiotics dry roughage silage

The answer is Concentrates

Concentrates are feeds that are high in energy value and include fat and cereal grains and their by-products. They are very low in fiber and are usually highly digestible. They produce high and rapid gains in animals that feed on them.