Effects of feed particle size, calcium concentration and phytase supplementation on InsP degradation in broiler chickens fed pelleted diets.

1. The objective of the trial was to study the single and interactive effects of feed particle size in pelleted feed, dietary calcium (Ca) concentration and microbial phytase supplementation in broiler chickens. The studied traits were -inositol (1,2,3,4,5,6) hexakis (dihydrogen phosphate) (InsP) degradation, pre-caecal digestibility of phosphorus (P), Ca and amino acids (AA) and retention of P, Ca and nitrogen (N).