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Related Experiment Videos

Nutritional value of processed rapeseed meal.

I K Paik1

  • 1Department of Animal Science, Chung-Ang University, Kyonggi-Do, South Korea.

Advances in Experimental Medicine and Biology
|January 1, 1991
PubMed
Summary

Iodine supplementation negatively impacted rat weight gain. Ammoniation of rapeseed oil meal (ROM) affected its nutritional value and toxicity, with Avoparcin improving broiler chicken performance.

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Area of Science:

  • Animal Nutrition
  • Agricultural Chemistry
  • Toxicology

Background:

  • Rapeseed oil meal (ROM) is a common feed ingredient, but its nutritional value and safety can be affected by processing.
  • Understanding the impact of treatments like ammoniation and supplementation on feed components is crucial for animal husbandry.

Purpose of the Study:

  • To evaluate the effects of iodine supplementation and ROM ammoniation on animal growth and nutrient utilization.
  • To assess the impact of ammoniation on the toxic components (goitrin, isothiocyanates) in ROM.
  • To determine the efficacy of Avoparcin supplementation in diets containing ROM for broiler chickens.

Main Methods:

  • Rats were fed diets supplemented with iodine (3.5 ppm) and ROM.
  • ROM was treated with varying levels of ammonia (2-6%).
  • Chickens were fed ammoniated ROM diets, with or without Avoparcin supplementation.
  • Measurements included weight gain, metabolizable energy, nutrient availability, goitrin and isothiocyanate levels, thyroid gland weight, and dressing percentage.

Main Results:

  • Iodine supplementation (3.5 ppm) reduced weight gain in rats fed ROM.
  • Ammoniation of ROM (2-4%) tended to improve metabolizable energy and nutrient availability in chickens.
  • Higher ammoniation levels (≥3%) reduced chicken weight gain and increased thyroid gland weight.
  • Ammoniation reduced goitrin but increased isothiocyanate levels in ROM.
  • Avoparcin supplementation improved weight gain and dressing percentage in broiler chickens fed ROM.

Conclusions:

  • Iodine supplementation at 3.5 ppm is detrimental to rat growth on ROM diets.
  • Ammoniation of ROM presents a complex effect, improving some nutritional aspects while increasing anti-nutritional factors and negatively impacting chicken growth at higher levels.
  • Avoparcin shows potential in mitigating negative effects of ROM in broiler diets.

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