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Effects of dry-rolled or steam-flaked corn finishing diets with or without twenty-five percent dried distillers grains on ruminal fermentation and apparent total tract digestion.
J Anim Sci 2009; 87(11):3630-8JA

Abstract

A metabolism study was conducted to evaluate ruminal fermentation and apparent total tract digestibilities of cattle finishing diets. Holstein steers (n = 16, 351 kg of BW) with ruminal cannulas were fed diets consisting of 0 or 25% dried corn distillers grains (DDG), using dry-rolled corn (DRC) or steam-flaked corn (SFC) as the principal energy source (2 x 2 factorial arrangement). The study was conducted in 2 periods, with 4 steers per treatment in each period. Periods consisted of a 12-d adaptation phase and a 3-d collection phase. Compared with DRC, feeding SFC decreased intakes of DM, OM, starch, NDF, and ether extract (P < 0.01), and steers fed SFC excreted less DM, OM, starch, NDF, and ether extract (P < 0.01). Compared with SFC, feeding DRC decreased ruminal concentrations of acetate, butyrate, isobutyrate, and isovalerate, and decreased the acetate-to-propionate ratio (P < 0.01). Compared with SFC, DRC decreased ruminal propionate, valerate, and lactate concentrations (P < 0.01). When compared with cattle fed SFC, ruminal pH of cattle fed DRC was less at 0 h and greater at 6 h postfeeding (P < 0.01). Ruminal ammonia concentrations were greater for DRC vs. SFC at h 0, 6, 10, 12, 14, 16, 18, 20, and 22 postfeeding (P < 0.05). Feeding DDG decreased consumption of starch and ether extract, but increased NDF intake (P < 0.01). Fecal excretion of ether extract was increased by adding DDG compared with diets without DDG (P < 0.05), resulting in less apparent total tract digestibility of ether extract for cattle fed DDG (P < 0.01). Ruminal lactate concentrations were increased with addition of DDG compared with diets without DDG (P = 0.01). Ruminal ammonia concentrations were less for steers fed 25 vs. 0% DDG at 2, 4, 6, 8, and 10 h postfeeding (P < 0.05). We conclude, based on these results, that ruminal fermentation and apparent total tract digestibility of DDG are affected by grain processing.

Authors+Show Affiliations

Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19648506

Citation

May, M L., et al. "Effects of Dry-rolled or Steam-flaked Corn Finishing Diets With or Without Twenty-five Percent Dried Distillers Grains On Ruminal Fermentation and Apparent Total Tract Digestion." Journal of Animal Science, vol. 87, no. 11, 2009, pp. 3630-8.
May ML, Quinn MJ, Reinhardt CD, et al. Effects of dry-rolled or steam-flaked corn finishing diets with or without twenty-five percent dried distillers grains on ruminal fermentation and apparent total tract digestion. J Anim Sci. 2009;87(11):3630-8.
May, M. L., Quinn, M. J., Reinhardt, C. D., Murray, L., Gibson, M. L., Karges, K. K., & Drouillard, J. S. (2009). Effects of dry-rolled or steam-flaked corn finishing diets with or without twenty-five percent dried distillers grains on ruminal fermentation and apparent total tract digestion. Journal of Animal Science, 87(11), pp. 3630-8. doi:10.2527/jas.2008-0857.
May ML, et al. Effects of Dry-rolled or Steam-flaked Corn Finishing Diets With or Without Twenty-five Percent Dried Distillers Grains On Ruminal Fermentation and Apparent Total Tract Digestion. J Anim Sci. 2009;87(11):3630-8. PubMed PMID: 19648506.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of dry-rolled or steam-flaked corn finishing diets with or without twenty-five percent dried distillers grains on ruminal fermentation and apparent total tract digestion. AU - May,M L, AU - Quinn,M J, AU - Reinhardt,C D, AU - Murray,L, AU - Gibson,M L, AU - Karges,K K, AU - Drouillard,J S, Y1 - 2009/07/31/ PY - 2009/8/4/entrez PY - 2009/8/4/pubmed PY - 2010/1/6/medline SP - 3630 EP - 8 JF - Journal of animal science JO - J. Anim. Sci. VL - 87 IS - 11 N2 - A metabolism study was conducted to evaluate ruminal fermentation and apparent total tract digestibilities of cattle finishing diets. Holstein steers (n = 16, 351 kg of BW) with ruminal cannulas were fed diets consisting of 0 or 25% dried corn distillers grains (DDG), using dry-rolled corn (DRC) or steam-flaked corn (SFC) as the principal energy source (2 x 2 factorial arrangement). The study was conducted in 2 periods, with 4 steers per treatment in each period. Periods consisted of a 12-d adaptation phase and a 3-d collection phase. Compared with DRC, feeding SFC decreased intakes of DM, OM, starch, NDF, and ether extract (P < 0.01), and steers fed SFC excreted less DM, OM, starch, NDF, and ether extract (P < 0.01). Compared with SFC, feeding DRC decreased ruminal concentrations of acetate, butyrate, isobutyrate, and isovalerate, and decreased the acetate-to-propionate ratio (P < 0.01). Compared with SFC, DRC decreased ruminal propionate, valerate, and lactate concentrations (P < 0.01). When compared with cattle fed SFC, ruminal pH of cattle fed DRC was less at 0 h and greater at 6 h postfeeding (P < 0.01). Ruminal ammonia concentrations were greater for DRC vs. SFC at h 0, 6, 10, 12, 14, 16, 18, 20, and 22 postfeeding (P < 0.05). Feeding DDG decreased consumption of starch and ether extract, but increased NDF intake (P < 0.01). Fecal excretion of ether extract was increased by adding DDG compared with diets without DDG (P < 0.05), resulting in less apparent total tract digestibility of ether extract for cattle fed DDG (P < 0.01). Ruminal lactate concentrations were increased with addition of DDG compared with diets without DDG (P = 0.01). Ruminal ammonia concentrations were less for steers fed 25 vs. 0% DDG at 2, 4, 6, 8, and 10 h postfeeding (P < 0.05). We conclude, based on these results, that ruminal fermentation and apparent total tract digestibility of DDG are affected by grain processing. SN - 1525-3163 UR - https://www.unboundmedicine.com/medline/citation/19648506/Effects_of_dry_rolled_or_steam_flaked_corn_finishing_diets_with_or_without_twenty_five_percent_dried_distillers_grains_on_ruminal_fermentation_and_apparent_total_tract_digestion_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.2527/jas.2008-0857 DB - PRIME DP - Unbound Medicine ER -