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Abstract
1. Protein and energy requirements of local and imported commercial strains of ducklings were determined under tropical conditions.
2. The results indicate a requirement for a diet with 240 g crude protein/kg, 9 g methionine plus cystine/kg and 12.97 MJ metabolisable energy/kg for maximum growth and food efficiency up to 8 weeks of age.
3. Though the imported commercial‐strain ducklings grew faster and utilised food more efficiently than the local strain, the general pattern of response indicated that optimum concentrations of nutrients were similar in the two strains.
4. The indicated nutrient contents are different from the recommended concentrations for ducklings in the temperate environment.