|RODRIGUEZ-HERNANDEZ, K - South Dakota State University|
|ANDERSON, J - South Dakota State University|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 7/12/2015
Publication Date: 7/16/2015
Citation: Rodriguez-Hernandez, K., Anderson, J.L., Berhow, M.A. 2015. Ensiling carinata meal with forages to decrease glucosinolate concentrations [abstract]. American Dairy Science Association/American Society for Animal Science Joint Meeting.
Technical Abstract: Carinata meal (CM) has high quality protein, but it also has high glucosinolate concentrations which limits its use as a feedstuff. Our objective was to determine if ensiling CM with forages would decrease glucosinolates without compromising fermentation. Two trials were conducted, one on ensiling CM with alfalfa haylage (AH) and one with corn silage (CS). For both trials three blends of CM to forage were made 0:100, 25:27, and 50:50 on a DM basis. For both 637g of DM for each the three blends were packed in 942 cm3 microsilos in quadruplicate for 0, 7, 21 and 60 d of ensiling. Sinigrin, the main glucosinolate in CM, was greatest (P < 0.01) in the 50:50 and decreased over time (P<0.01) in the 25:75 and 50:50 in both trials. There was no treatment by d interaction for AH blends, but there was a treatment by d interaction for the CS blends. The pH decreased in all blends over time, but was greater in the 50:50 compared to the other blends. Acetic acid and Lactic acid increased over time in all blends. Acetic acid was less in the AH blends with increased CM. There was no treatment effect on acetic acid for the CS blends. Lactic acid was less in both trials with increased inclusion of CM. In both trials CP increased with inclusion of CM. The CP was similar over d of ensiling in AH blends, but tended (P=0.05) to decrease over d in CS blends. In both trials, NDF was less with the addition of the CM and there was a treatment by d interaction (P < 0.01) in CS trial, and a tendency (P = 0.08) for interaction in the AH trial. Ensiling CM with forage decreases glucosinolate concentrations, without major detriment to silage fermentation.