TY - JOUR
T1 - In vitro gas production including methane from bermudagrasses supplemented with dried distillers grains with solubles *
AU - Smith, W. B.
AU - Miller, M. D.
AU - Crossland, W. L.
AU - Callaway, T. R.
AU - Tedeschi, L. O.
AU - Rouquette, F. M.
N1 - Publisher Copyright:
© 2020 American Registry of Professional Animal Scientists
PY - 2020/4
Y1 - 2020/4
N2 - Objective: The objective of this study was to document the simulated effect of dried distillers grains with solubles (DDGS) supplementation of Coastal bermudagrass (COS; Cynodon dactylon [L.] Pers.) and Tifton 85 bermudagrass (TIF; C. dactylon [L.] Pers. × Cynodon nlemfuënsis Vanderyst) forage on in vitro gas production, in vitro true digestibility (IVTD), in vitro NDF digestibility (IVNDFD), and methane production. Materials and Methods: Forage and DDGS were combined to represent 3 levels of supplemental DDGS (0, 0.25, or 1% BW), which resulted in ratios of forage:DDGS of 100:0, 87.5:12.5, and 50:50. Samples were incubated using the in vitro gas production technique, and headspace was sampled for quantification of methane concentration. The residue was rinsed in neutral detergent solution for determination of IVTD and IVNDFD. Results and Discussion: Discrete lag times of both the exponential and logistic equations decreased linearly (P < 0.01) with an increasing proportion of DDGS across TIF and COS. The IVTD of TIF (78% DM) was greater (P < 0.01) than for COS (71% DM), as was IVNDFD (66 vs. 54% NDF). Similarly, IVTD increased (P < 0.01) by 5% with 87.5:12.5 and by 19% with 50:50 across both COS and TIF. Methane production (g/kg of digestible DM and g/kg of digestible OM) decreased linearly (P ≤ 0.02) with an increasing proportion of DDGS for both COS and TIF. Implications and Applications: Results indicated that DDGS might be supplemented to cattle for increased diet digestibility with an additional potential benefit of reduced methane production. Efficacy of DDGS was dependent on forage nutritive value.
AB - Objective: The objective of this study was to document the simulated effect of dried distillers grains with solubles (DDGS) supplementation of Coastal bermudagrass (COS; Cynodon dactylon [L.] Pers.) and Tifton 85 bermudagrass (TIF; C. dactylon [L.] Pers. × Cynodon nlemfuënsis Vanderyst) forage on in vitro gas production, in vitro true digestibility (IVTD), in vitro NDF digestibility (IVNDFD), and methane production. Materials and Methods: Forage and DDGS were combined to represent 3 levels of supplemental DDGS (0, 0.25, or 1% BW), which resulted in ratios of forage:DDGS of 100:0, 87.5:12.5, and 50:50. Samples were incubated using the in vitro gas production technique, and headspace was sampled for quantification of methane concentration. The residue was rinsed in neutral detergent solution for determination of IVTD and IVNDFD. Results and Discussion: Discrete lag times of both the exponential and logistic equations decreased linearly (P < 0.01) with an increasing proportion of DDGS across TIF and COS. The IVTD of TIF (78% DM) was greater (P < 0.01) than for COS (71% DM), as was IVNDFD (66 vs. 54% NDF). Similarly, IVTD increased (P < 0.01) by 5% with 87.5:12.5 and by 19% with 50:50 across both COS and TIF. Methane production (g/kg of digestible DM and g/kg of digestible OM) decreased linearly (P ≤ 0.02) with an increasing proportion of DDGS for both COS and TIF. Implications and Applications: Results indicated that DDGS might be supplemented to cattle for increased diet digestibility with an additional potential benefit of reduced methane production. Efficacy of DDGS was dependent on forage nutritive value.
KW - Coastal bermudagrass
KW - Tifton 85 bermudagrass
KW - in vitro gas production
UR - http://www.scopus.com/inward/record.url?scp=85082752976&partnerID=8YFLogxK
U2 - 10.15232/aas.2019-01916
DO - 10.15232/aas.2019-01916
M3 - Article
AN - SCOPUS:85082752976
SN - 2590-2873
VL - 36
SP - 172
EP - 182
JO - Applied Animal Science
JF - Applied Animal Science
IS - 2
ER -