The effects of supplemental iron and time periods on growth performance, carcass characteristics and iron contents of breast muscle in broilers

Behroozlak, Mohammad Ali and Behroozlak, Morteza The effects of supplemental iron and time periods on growth performance, carcass characteristics and iron contents of breast muscle in broilers. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

This experiment was performed by 450 one-day-old (Ross 308) male chicks in a 3×3 factorial design with 3 levels of supplemental Fe (0.0, 40 and 80 mg/kg) and 3 time periods (total, T: from 1-42 d; grower and finisher, GF: from 11-42 d and finisher, F: from 25-42 d). Each treatment had 5 replicate pens with 10 birds per replicate. The results showed that feeding 80 mg/kg Fe at T period significantly decreased the ADFI (P<0.001). Also, adding FeSO4 significantly (P<0.05) increased the yield of thigh and breast muscles at T and GF periods, respectively. Compared with birds fed the diet supplemented with 80 mg/kg of FeSO4, the birds fed control diet and 40 mg/kg FeSO4 significantly influenced the abdominal fat during the T period (P<0.001). Furthermore, adding 80 mg/kg of FeSO4 during the T period increased the iron content of breast meat compared to other dietary periods. It was concluded that use of 40 and 80 mg/kg FeSO4 had no remarkable effect on performance, but dietary supplementation of 80 mg/kg Fe during T period caused the higher Fe deposition of breast meat in broilers.

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