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Keywords:

  • sorghum;
  • reconstitution;
  • broiler;
  • enzyme

Abstract

BACKGROUND: The presence of tannins and phytic acid in sorghum causes anti-nutritional effects that include reduced growth rate, feed intake, feed efficiency and nutrient digestibility in broiler chicken. Therefore, in the present investigation efforts were made to reveal the effect of reconstitution of sorghum with or without enzymes on production performance and immunocompetence in broiler chicken.

RESULTS: The body weight gain, feed conversion ratio, energy and protein utilization efficiency were better in birds fed reconstituted sorghum in comparison to those fed untreated sorghum. The intake of feed in different treatments did not vary in comparison to the control group. The feed cost per unit weight gain or meat yield apparently reduced due to reconstitution. There was significant improvement in nitrogen corrected apparent metabolizable energy (AMEn) of diets containing reconstituted sorghum. The serum biochemical parameters such as total cholesterol, triglycerides and uric acid were not affected due to dietary treatments. The cell-mediated immune response to phytohaemagglutinin-P was better in sorghum-fed groups. However, the humoral response to sheep red blood cells remained unaffected owing to the substitution of the maize by sorghum or its processed form.

CONCLUSION: The results suggest that the reconstitution of sorghum was beneficial in improving the growth performance and nutrient utilization in broiler chicken. However, supplementation of enzymes to raw sorghum-based diets or addition of enzymes during reconstitution of sorghum did not further improve the growth performance of broilers. Copyright © 2009 Society of Chemical Industry