82 Late-Breaking: Effects of Solvent- or Mechanically Extracted-Carinata Meal On Intake And Total-Tract Digestibility In Cows Fed Long-stem Or Ground Corn Residues. (7th December 2018)
- Record Type:
- Journal Article
- Title:
- 82 Late-Breaking: Effects of Solvent- or Mechanically Extracted-Carinata Meal On Intake And Total-Tract Digestibility In Cows Fed Long-stem Or Ground Corn Residues. (7th December 2018)
- Main Title:
- 82 Late-Breaking: Effects of Solvent- or Mechanically Extracted-Carinata Meal On Intake And Total-Tract Digestibility In Cows Fed Long-stem Or Ground Corn Residues.
- Authors:
- Brake, D
Rosenthal, E
Perry, G - Abstract:
- Abstract: Carinata meal is a residue created during the manufacture of aviation biofuel from Brassica carinata. Cows fed long-stem or ground corn residues were individually supplemented mechanically- or solvent-extracted carinata meal or canola meal (positive control) to determine effects of carinata meal on nutrient digestion and intake when ruminal fermentation is limited by ruminally available N (RAN). Intake of supplemental protein was complete among cows fed solvent-extracted carinata meal and canola meal, but intake of mechanically-extracted carinata meal was less (14.0% of DM offered). Glucosinolate concentration in mechanically-extracted carinata meal (72.34 mmol/g) was much greater (P < 0.01) than concentrations in solvent-extracted carinata meal (16.51 mmol/g) or canola meal (1.57 mmol/g), and glucosinolate concentration was negatively correlated (r2 = -0.74) to intake of supplemental protein. Typically, intake is reduced among forage fed cattle when RAN limits ruminal fermentation. Forage intake tended (P = 0.10) to be greatest among cows fed canola meal, least for cows not provided supplemental protein and forage intake was intermediate for cows fed solvent- and mechanically-extracted carinata meal. Further, forage intake was greater (P < 0.01) in cows fed long-stem corn residue compared to cows fed ground corn residue. Measures of total-tract DM (P = 0.28), OM (P = 0.22), NDF (P = 0.30) and ADF (P = 0.18) digestibility were not affected by supplemental protein.Abstract: Carinata meal is a residue created during the manufacture of aviation biofuel from Brassica carinata. Cows fed long-stem or ground corn residues were individually supplemented mechanically- or solvent-extracted carinata meal or canola meal (positive control) to determine effects of carinata meal on nutrient digestion and intake when ruminal fermentation is limited by ruminally available N (RAN). Intake of supplemental protein was complete among cows fed solvent-extracted carinata meal and canola meal, but intake of mechanically-extracted carinata meal was less (14.0% of DM offered). Glucosinolate concentration in mechanically-extracted carinata meal (72.34 mmol/g) was much greater (P < 0.01) than concentrations in solvent-extracted carinata meal (16.51 mmol/g) or canola meal (1.57 mmol/g), and glucosinolate concentration was negatively correlated (r2 = -0.74) to intake of supplemental protein. Typically, intake is reduced among forage fed cattle when RAN limits ruminal fermentation. Forage intake tended (P = 0.10) to be greatest among cows fed canola meal, least for cows not provided supplemental protein and forage intake was intermediate for cows fed solvent- and mechanically-extracted carinata meal. Further, forage intake was greater (P < 0.01) in cows fed long-stem corn residue compared to cows fed ground corn residue. Measures of total-tract DM (P = 0.28), OM (P = 0.22), NDF (P = 0.30) and ADF (P = 0.18) digestibility were not affected by supplemental protein. However, total-tract digestion of DM, OM, NDF, and ADF were increased (P < 0.01) more than 23% among cows fed long-stem compared to ground corn residue. Apparently, increased intake of forage in response to supplemental protein counteracted potential increases in total-tract digestion. These data seem to suggest that carinata meal can be useful as supplemental protein to cattle fed forage; however, utility of carinata meal may be affected by different processing methods and residual concentrations of glucosinolates. … (more)
- Is Part Of:
- Journal of animal science. Volume 96(2018)Supplement 3
- Journal:
- Journal of animal science
- Issue:
- Volume 96(2018)Supplement 3
- Issue Display:
- Volume 96, Issue 3 (2018)
- Year:
- 2018
- Volume:
- 96
- Issue:
- 3
- Issue Sort Value:
- 2018-0096-0003-0000
- Page Start:
- 402
- Page End:
- 402
- Publication Date:
- 2018-12-07
- Subjects:
- Cattle -- Carinata meal -- Corn residue
Livestock -- Periodicals
Livestock
Electronic journals
Periodicals
636.005 - Journal URLs:
- https://dl.sciencesocieties.org/publications/jas/index ↗
http://www.asas.org/jas/ ↗
https://academic.oup.com/jas ↗
http://www.oxfordjournals.org/ ↗ - DOI:
- 10.1093/jas/sky404.882 ↗
- Languages:
- English
- ISSNs:
- 0021-8812
- Deposit Type:
- Legaldeposit
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