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Related Experiment Videos

Feeding regimen and enzyme supplementation to rye-based diets for broilers.

R Lázaro1, M A Latorre, P Medel

  • 1Universidad Politécnica de Madrid, Departamento de Producción Animal, 28040 Madrid, Spain.

Poultry Science
|February 26, 2004
PubMed
Summary

Feed restriction and enzyme supplementation improved broiler performance on rye-based diets. Feed restriction reduced leg disorders and digesta viscosity, while enzyme supplementation enhanced growth and feed conversion, especially under ad libitum feeding.

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Area of Science:

  • Animal Science
  • Poultry Nutrition
  • Feed Technology

Background:

  • Rye-based diets can negatively impact broiler performance and health due to anti-nutritional factors.
  • Enzyme supplementation and modified feeding regimens are strategies to mitigate these effects.

Purpose of the Study:

  • To investigate the effects of feed restriction (FR) and enzyme supplementation (xylanase and beta-glucanase) on broiler performance and physiological parameters.
  • To compare the efficacy of these strategies in broilers fed rye-based versus corn-based diets.

Main Methods:

  • Factorial arrangement of treatments: ad libitum (AL) vs. 30% FR (4-14 d), 0 vs. 500 ppm enzyme supplementation (ES).
  • A corn-based diet served as a control.
  • Broilers were raised from 4 to 46 days, with performance and physiological parameters monitored.

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Main Results:

  • FR improved feed conversion, reduced leg disorders, digesta viscosity, and pasted vents, and increased gizzard weight.
  • ES enhanced average daily gain and feed conversion, with greater benefits observed in AL birds.
  • Rye-based diets impaired performance and increased leg disorders and digesta viscosity compared to corn, effects mitigated by FR and ES.

Conclusions:

  • Rye negatively affects broiler performance and health, increasing digesta viscosity and leg disorders.
  • Both feed restriction and enzyme supplementation effectively reduce the negative impacts of rye-based diets.
  • Enzyme supplementation showed greater benefits for ad libitum fed broilers.