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Development of a novel value-added distillers dried grains with solubles: effects on amino acid and energy digestibility in pigs

Fastinger, Nathaniel David
http://rave.ohiolink.edu/etdc/view?acc_num=osu1117220389

Abstract Details

2005, Doctor of Philosophy, Ohio State University, Animal Science.
Ethanol production from corn in the U.S. is increasing at an annual rate of 30% resulting in large increases in the availability of the resulting byproduct, distillers dried grains with solubles (DDGS). The first objective of this research was to evaluate the differences in amino acid and energy digestibility among various sources of DDGS available on the market that varied in the degree of lightness or darkness. These results suggest that darker DDGS have lower (P < 0.05) lysine and essential amino acid digestibilities than lighter colored DDGS sources. Lysine digestibility appeared to be reduced to a greater extent by the degree of darkness of DDGS more so than the other essential amino acids. The second objective was to produce various value-added DDGS with the goal of breaking down as much fiber as possible to improve nutrient digestibility in the pig. The value-added DDGS products were produced by steeping with and without enzymes or acid pretreated followed by steeping with or without enzymes. Steeping with enzymes resulted in a 30-40% reduction in neutral and acid detergent fiber content, while acid pretreatments followed by steeping with enzymes reduced these same contents by 95%. The last objective was to evaluate the amino acid and energy digestibility of the novel value-added DDGS products produced and to compare them to DDGS fed without further processing and to the same amount of enzyme added to the dry feed. Apparent and true amino acid digestibility of the essential amino acids were approximately 12% higher (P < 0.05) for the steeped with enzymes treatment than the other three treatments. The results of this research demonstrated that predigesting feedstuffs by steeping with an enzyme cocktail can improve the amino acid and energy digestibility of the resulting product more than simply adding the enzymes to the animals’ diet. The predigestion of feedstuffs can be applied to many by-products in the feed industry that contain components with low digestibility in non-ruminants including: alfalfa meal, brewers grains, coconut meal, corn gluten feed, cottonseed meal, rice bran, safflower meal, soybean meal, sugar beet pulp, sunflower meal, wheat bran, and wheat middlings.
Donald Mahan (Advisor)
167 p.
pigs; enzymes; Distillers grains

Recommended Citations

Citations

  • Fastinger, N. D. (2005). Development of a novel value-added distillers dried grains with solubles: effects on amino acid and energy digestibility in pigs [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1117220389

    APA Style (7th edition)

  • Fastinger, Nathaniel. Development of a novel value-added distillers dried grains with solubles: effects on amino acid and energy digestibility in pigs. 2005. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1117220389.

    MLA Style (8th edition)

  • Fastinger, Nathaniel. "Development of a novel value-added distillers dried grains with solubles: effects on amino acid and energy digestibility in pigs." Doctoral dissertation, Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1117220389

    Chicago Manual of Style (17th edition)

osu1117220389
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© 2005, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.