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Abstract
1. The relationship between broiler performance and two dietary mineral balance equations was investigated at a high constant ambient temperature (30°C) using a range of 11 salt supplements given to male broiler chicks from 21 to 42 d of age.
2. No relationship was found between broiler performance and either of the two balance equations.
3. Re‐evaluating these equations using retained, rather than dietary, mineral concentrations did not improve the relationship although changes in mineral retentions associated with the supplements indicated that dietary concentrations were not a good indicator of the impact of the diet on the bird's acid‐base homoeostasis.
4. Evidence was found that metabolisable anions supplemented in association with mineral cations may have a significant effect on broiler performance.
