Rationale: - a. Copra meal: Copra meal is a plant-based feed derived from the residue after oil extraction from dried coconut kernels. It's used as a supplementary feed source for livestock, especially where forage production is seasonal . - b. Soybean meal: Soybean meal is another plant-based feed, specifically the residue from soybean oil extraction. It's valued for its high protein content, making it an excellent animal feed . - c. Skim milk: Skim milk is a dairy product, derived from animal