Effect of considering nutrient equivalency of a multi enzyme with ß-‎mannanase in feed formulation on broiler chicks’ performance‎

Document Type : Research Paper

Authors

1 Department of Animal Science, College of Agriculture and Natural Recourse, University of Tehran, Karaj, ‎Iran

2 Department of Animal Science, College of Agriculture and Natural Recourse, University of Tehran, Karaj, ‎Iran

Abstract

The aim of this study was to determine the response of the Ross 308 broilers to β-­mannanase containing multi-enzyme with different percentages of nutrient equivalency values of multi-enzyme in corn-soybean based dies. A total of 192 male Ross 308 broiler chicks were used in a completely randomized design with six treatments, eight replicates, and four birds in each. Treatment one (positive control) was a normal corn-soybean meal diet without multi-enzymes. Treatments two, three, four, and five contained 0.3 kg/ton multi enzymes, using 25, 50, 75, and 100% of the nutrients equivalency value of enzyme, respectively. The sixth treatment (negative control) was like to fifth treatment but without added multi-enzyme. Body weight gain and feed conversion ratio (FCR) were assessed weekly. The results indicate, no significant difference among the treatment one and two in body weight gain and FCR. At 42 days of age, the difference in body weight of the negative control group and treatment five was significant (P<0.0001). The similar performance of birds in treatment two despite lower metabolized energy, crude protein, and phosphorus with added enzyme, comparing to the positive control group, indicating that multi-enzyme had the potential for releasing the feed nutrients.

Keywords

References

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Iranian Journal of animal Science
Volume 54, Issue 1
April 2023
Pages 1-12

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History

  • Receive Date: 29 February 2020
  • Revise Date: 02 November 2020
  • Accept Date: 04 November 2020

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