Tags

Type your tag names separated by a space and hit enter

Effects of increasing levels of corn distillers dried grains with solubles to steers offered moderate-quality forage.
J Anim Sci 2009; 87(12):4064-72JA

Abstract

Supplementation of forage-fed livestock has been studied for decades; however, as by-products become available research is needed to determine optimal feeding rates for increased efficiency. Five ruminally and duodenally cannulated beef steers (446 +/- 42 kg of initial BW) were used in a 5 x 5 Latin square to evaluate effects of increasing level of supplemental corn distillers dried grains with solubles (DDGS; 25.4% CP, 9.8% fat, DM basis) on DMI, rate and site of digestion, ruminal fermentation, and microbial efficiency. Diets consisted of ad libitum quantities of moderate-quality smooth brome hay (10.6% CP; DM basis), free access to water and trace mineral salt block, and 1 of 5 levels of DDGS (0, 0.3, 0.6, 0.9, and 1.2% of BW daily of DDGS; DM basis). Diets were formulated to meet or exceed the estimated rumen degradable protein requirements (assumed microbial yield = 10.5%). All supplements were fed at 0600 h before forage was fed. Steers were adapted to diets for 14 d followed by a 7-d collection period. Hay OM intake decreased (linear; P < 0.001), whereas total OM intake increased (linear; P < 0.001) with increasing DDGS level. Total CP intake, duodenal OM and CP flows, and total tract OM and NDF digestibilities increased (linear; P <or= 0.01) with increasing level of DDGS. Apparent ruminal and true ruminal CP digestibilities increased linearly (P <or= 0.007), and total-tract CP digestibility increased quadratically (P = 0.02) with increasing DDGS level. Average ruminal pH was not different (P = 0.89) among treatments. Ammonia concentration increased (quadratic; P = 0.02) with increasing DDGS. Acetate proportions (molar %) decreased linearly (P < 0.001), whereas butyrate (molar %) increased linearly (P = 0.007), and propionate (molar %) increased quadratically (P = 0.04) with increasing DDGS. Ruminal DM fill decreased quadratically (P = 0.03), whereas fluid dilution rate tended to increase cubically (P = 0.08) with increasing DDGS. In situ rate of hay and DDGS DM disappearance responded cubically (P <or= 0.03) with greatest disappearance occurring with the 0.9% treatment. In situ rate of ruminal CP degradation of hay and DDGS increased (linear; P <or= 0.003) with increasing DDGS. Feeding 0.3% up to 1.2% of BW daily of DDGS as a supplement to forage-based diets resulted in no adverse effects on forage digestion or fermentation and resulted in increased nutrient supply in steers fed moderate-quality smooth brome hay.

Authors+Show Affiliations

Department of Animal Sciences, North Dakota State University, Fargo 58108, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19684267

Citation

Leupp, J L., et al. "Effects of Increasing Levels of Corn Distillers Dried Grains With Solubles to Steers Offered Moderate-quality Forage." Journal of Animal Science, vol. 87, no. 12, 2009, pp. 4064-72.
Leupp JL, Lardy GP, Karges KK, et al. Effects of increasing levels of corn distillers dried grains with solubles to steers offered moderate-quality forage. J Anim Sci. 2009;87(12):4064-72.
Leupp, J. L., Lardy, G. P., Karges, K. K., Gibson, M. L., & Caton, J. S. (2009). Effects of increasing levels of corn distillers dried grains with solubles to steers offered moderate-quality forage. Journal of Animal Science, 87(12), pp. 4064-72. doi:10.2527/jas.2008-1711.
Leupp JL, et al. Effects of Increasing Levels of Corn Distillers Dried Grains With Solubles to Steers Offered Moderate-quality Forage. J Anim Sci. 2009;87(12):4064-72. PubMed PMID: 19684267.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of increasing levels of corn distillers dried grains with solubles to steers offered moderate-quality forage. AU - Leupp,J L, AU - Lardy,G P, AU - Karges,K K, AU - Gibson,M L, AU - Caton,J S, Y1 - 2009/08/14/ PY - 2009/8/18/entrez PY - 2009/8/18/pubmed PY - 2010/1/26/medline SP - 4064 EP - 72 JF - Journal of animal science JO - J. Anim. Sci. VL - 87 IS - 12 N2 - Supplementation of forage-fed livestock has been studied for decades; however, as by-products become available research is needed to determine optimal feeding rates for increased efficiency. Five ruminally and duodenally cannulated beef steers (446 +/- 42 kg of initial BW) were used in a 5 x 5 Latin square to evaluate effects of increasing level of supplemental corn distillers dried grains with solubles (DDGS; 25.4% CP, 9.8% fat, DM basis) on DMI, rate and site of digestion, ruminal fermentation, and microbial efficiency. Diets consisted of ad libitum quantities of moderate-quality smooth brome hay (10.6% CP; DM basis), free access to water and trace mineral salt block, and 1 of 5 levels of DDGS (0, 0.3, 0.6, 0.9, and 1.2% of BW daily of DDGS; DM basis). Diets were formulated to meet or exceed the estimated rumen degradable protein requirements (assumed microbial yield = 10.5%). All supplements were fed at 0600 h before forage was fed. Steers were adapted to diets for 14 d followed by a 7-d collection period. Hay OM intake decreased (linear; P < 0.001), whereas total OM intake increased (linear; P < 0.001) with increasing DDGS level. Total CP intake, duodenal OM and CP flows, and total tract OM and NDF digestibilities increased (linear; P <or= 0.01) with increasing level of DDGS. Apparent ruminal and true ruminal CP digestibilities increased linearly (P <or= 0.007), and total-tract CP digestibility increased quadratically (P = 0.02) with increasing DDGS level. Average ruminal pH was not different (P = 0.89) among treatments. Ammonia concentration increased (quadratic; P = 0.02) with increasing DDGS. Acetate proportions (molar %) decreased linearly (P < 0.001), whereas butyrate (molar %) increased linearly (P = 0.007), and propionate (molar %) increased quadratically (P = 0.04) with increasing DDGS. Ruminal DM fill decreased quadratically (P = 0.03), whereas fluid dilution rate tended to increase cubically (P = 0.08) with increasing DDGS. In situ rate of hay and DDGS DM disappearance responded cubically (P <or= 0.03) with greatest disappearance occurring with the 0.9% treatment. In situ rate of ruminal CP degradation of hay and DDGS increased (linear; P <or= 0.003) with increasing DDGS. Feeding 0.3% up to 1.2% of BW daily of DDGS as a supplement to forage-based diets resulted in no adverse effects on forage digestion or fermentation and resulted in increased nutrient supply in steers fed moderate-quality smooth brome hay. SN - 1525-3163 UR - https://www.unboundmedicine.com/medline/citation/19684267/Effects_of_increasing_levels_of_corn_distillers_dried_grains_with_solubles_to_steers_offered_moderate_quality_forage_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.2527/jas.2008-1711 DB - PRIME DP - Unbound Medicine ER -