Comparison of different feed additives in diet containing barley with different particle sizes on growth performance, cecal microbial population and morphology of the small intestine of broiler chickens

Articles in Press

Document Type : Research Paper

Authors

1 Department of Animal Science, Animal Science and Food Technology Faculty, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran.

2 Department of Nature Engineering, Shirvan Faculty of Agriculture, University of Bojnord, Bojnord, Iran

3 Department of basic science, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

10.22059/ijas.2024.382274.654027

Abstract

the use of different additives can partially reduce the negative effects caused by NSP of cereals. Objective: The present study was conducted to investigate the effect of different additives in the diet containing barley with different particle sizes on microbial population of the cecum and the morphology of the small intestine of broiler chickens. Methods: 400 one-day-old broilers of strain Ross 308 were used in the completely randomized design with a factorial arrangement of 2x4 and with 8 treatments. Treatments included the type of additive (without additive, multi-enzyme, autolyzed yeast and autolyzed yeast with multi-enzyme) and particle size of barley (fine, 2 mm and coarse, 8 mm). Results Additives decreased the pH of the gizzard and jejunum compared to the control treatment. Autolyzed yeast with multi-enzyme increased the number of lactobacillus bacteria colonies and decreased the number of E. coli and coliform caecum bacteria colonies compared to other treatments. Autolyzed yeast with multi-enzyme reduced the viscosity of ileum digestive compared to other treatments. The digesta transit time was less in diets with additives than in diets without additives. The addition of autolyzed yeast with multienzyme and also the size of large barley particles improved the morphological characteristics of the small intestine. Conclusion: In general, it is possible to recommend the use of autolyzed yeast with multienzyme in diets containing barley, considering the stimulation and development of the beneficial intestinal bacterial population, the reduction of digestive viscosity, and the improvement of the morphological characteristics of the small intestine.

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Iranian Journal of animal Science

Articles in Press, Accepted Manuscript
Available Online from 03 December 2024

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History

  • Receive Date: 14 September 2024
  • Revise Date: 03 November 2024
  • Accept Date: 18 November 2024

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