• Vitamin A Requirements in Poultry:
• Breeding Hens: Demand the highest concentration of Vitamin A in their ration (typically $10,000 - 12,000\text{ IU/kg}$). Vitamin A is critical for embryonic organogenesis, epithelial development, and maximum egg hatchability. Inadequate maternal transfer causes high early embryonic mortality.
• Commercial broilers and layers have lower dietary allowances ($4,000 - 8,000\text{ IU/kg}$).
• nalysis:
• (Breeding hens): Correct class of birds requiring highest vitamin A.

Correct option: (2) Breeding hens