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Chromium propionate in broilers: effect on insulin sensitivity.

M A Brooks1, J L Grimes2, K E Lloyd1

  • 1Department of Animal Science, North Carolina State University, Raleigh, NC 27695-7621.

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Summary
This summary is machine-generated.

Dietary chromium propionate supplementation improved insulin sensitivity in broiler chickens. Supplementation reduced plasma non-esterified fatty acid (NEFA) concentrations after fasting and refeeding, indicating enhanced glucose metabolism.

Keywords:
broilerchromiumglucoseinsulin

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Area of Science:

  • Animal Nutrition
  • Metabolic Physiology
  • Poultry Science

Background:

  • Insulin sensitivity is crucial for metabolic health in poultry.
  • Dietary chromium (Cr) supplementation is explored for its potential to modulate glucose metabolism and insulin sensitivity.
  • Chromium propionate is a specific form of chromium used in animal feed.

Purpose of the Study:

  • To evaluate the impact of dietary chromium propionate on insulin sensitivity indicators in broiler chickens.
  • To determine the effects of varying supplemental chromium levels on liver and muscle glycogen, plasma glucose, and non-esterified fatty acid (NEFA) concentrations.

Main Methods:

  • 288 male Ross broilers were fed diets with 0, 0.2, 0.4, or 0.6 mg supplemental Cr/kg.
  • Measurements included body weight, feed intake, feed efficiency, liver and muscle glycogen, plasma glucose, and plasma NEFA.
  • Sampling occurred at various time points, including post-fasting and post-refeeding periods.

Main Results:

  • No significant differences in feed intake, body weight gain, or feed efficiency were observed.
  • Plasma NEFA concentrations were significantly lower (P<0.01) in Cr-supplemented groups post-fasting and refeeding.
  • Liver and muscle glycogen concentrations showed a trend towards increase with Cr supplementation.

Conclusions:

  • Dietary chromium propionate supplementation enhances insulin sensitivity in broiler chickens.
  • The reduction in plasma NEFA post-fasting and refeeding suggests improved glucose utilization.
  • Chromium propionate is an effective supplement for improving metabolic parameters in poultry diets.