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Related Experiment Videos

Ruminal fermentation and nutrient digestion in sheep fed hydroxyethylsoyamide

T C Jenkins1

  • 1Department of Animal, Dairy, and Veterinary Sciences, Clemson University, SC 29630, USA.

Journal of Animal Science
|August 1, 1997
PubMed
Summary

Hydroxyethylsoyamide (HESA) showed variable effects on sheep nutrient digestibility, potentially due to diet physical properties. Further research is needed to optimize its use in animal feed.

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Area of Science:

  • Animal Nutrition
  • Ruminant Physiology
  • Feed Science

Background:

  • Hydroxyethylsoyamide (HESA) previously demonstrated potential to protect soybean oil from ruminal biohydrogenation.
  • HESA may increase plasma unsaturated fatty acids in sheep, suggesting benefits for lipid metabolism.

Purpose of the Study:

  • To evaluate the effects of Hydroxyethylsoyamide (HESA) on ruminal volatile fatty acids (VFA) and nutrient digestibility in sheep.
  • To investigate the influence of diet physical properties on HESA's efficacy.

Main Methods:

  • Two digestibility trials with sheep (4x4 and 2x2 Latin squares) and one in vitro rumen study were conducted.
  • Diets included control, soybean oil (SBO), butylsoyamide (BuSA), and HESA, with variations in diet preparation (grinding).

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Main Results:

  • HESA, when ground, reduced dry matter intake (DMI), acetate/propionate ratio (A/P), and fiber digestibility compared to the control.
  • In vitro studies showed linoleic acid reduced VFA and A/P, but HESA and ethanolamine did not.
  • In Trial 3, avoiding grinding eliminated negative effects of HESA on fiber digestibility and A/P.

Conclusions:

  • The effects of HESA on nutrient digestibility in sheep are variable and may be influenced by diet particle size and physical form.
  • Dietary HESA can impact DMI and ruminal fermentation, with physical processing playing a key role in its efficacy.