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Related Experiment Videos

Utilizing Solanum glaucophyllum alone or with phytase to improve phosphorus utilization in broilers.

Y H Cheng1, J P Goff, J L Sell

  • 1Iowa State University, Ames, Iowa 50010, USA.

Poultry Science
|March 31, 2004
PubMed
Summary

Solanum glaucophyllum (SG) supplementation improves broiler chicken growth and bone health by enhancing phosphorus utilization. Adding SG or 1,25-dihydroxyvitamin D to feed significantly boosted weight gain and bone density.

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Area of Science:

  • Animal Nutrition
  • Poultry Science
  • Nutritional Biochemistry

Background:

  • Phosphorus (P) is an essential mineral for broiler chickens, crucial for bone development and overall growth.
  • Phytate P in plant-based feed ingredients is poorly digestible by poultry, leading to P deficiency and environmental concerns.
  • Solanum glaucophyllum (SG), a plant rich in a 1,25-dihydroxyvitamin D glycoside, shows potential for improving P utilization.

Purpose of the Study:

  • To evaluate Solanum glaucophyllum (SG) as a feed additive for enhancing phosphorus (P) utilization in broiler chickens.
  • To compare the efficacy of SG with 1,25-dihydroxyvitamin D and standard P supplementation.
  • To investigate the effects of higher SG doses and its combination with phytase on broiler performance.

Main Methods:

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  • Broiler chickens were fed basal diets supplemented with varying levels of SG leaves, 1,25-dihydroxyvitamin D, or mineral P.
  • Growth performance (weight gain), plasma mineral levels (Ca, P), and bone characteristics (ash, density, mineral content) were assessed.
  • Experiment 2 examined higher SG doses and the synergistic effects of SG with phytase.

Main Results:

  • Supplementation with 5 g/kg SG leaves or 15 µg/kg 1,25-dihydroxyvitamin D significantly improved weight gain, plasma Ca and P, and bone parameters compared to the basal diet.
  • SG and 1,25-dihydroxyvitamin D treatments resulted in performance comparable to broilers fed a diet with adequate Ca and P levels.
  • In experiment 2, both SG and phytase individually enhanced growth and bone parameters; combining SG with phytase did not offer additional benefits over phytase alone.

Conclusions:

  • Solanum glaucophyllum effectively improves phosphorus utilization and enhances growth and bone development in broiler chickens.
  • SG can serve as a viable alternative to direct 1,25-dihydroxyvitamin D supplementation for optimizing broiler nutrition.
  • The combination of SG with phytase does not provide synergistic benefits, suggesting phytase alone is sufficient when SG is not used.