Sally Flis, Ph.D. – Feed and Crop Support Specialist

Corn Silage harvest in the Northeast has finished up for the most part. In October we analyzed another 250+ fresh corn silage samples from NY and PA.

October 2016 Fresh Corn Silage Sample Results

State DM, % CP, %DM    ADF, %DM aNDF, %DM aNDFd30, % NDF Starch, %DM Starch Digestibility, % Starch Ash, %DM
NY 2016 (n=177) 36.0 ± 4.9 8.2 ± 1.0 23.0 ± 3.6 40.8 ± 5.0  54.1 ± 3.6 34.3 ± 7.1 55.0 ± 9.8 3.9 ±  1.0
PA 2016 (n=82) 33.8 ± 2.3 8.5 ± 0.7 22.7 ± 1.9 39.4 ± 2.1  65.3  ± 0.0 35.9 ±  3.5 50.0 ±  10.0 3.9 ± 0.7


October 2015 Fresh Corn Silage Sample Results

State DM, % CP, %DM ADF, %DM NDF, %DM aNDFd30, % NDF Starch, %DM Starch Digestibility, % Starch Ash, %DM
NY (n=184) 34.1 ± 5.4 7.5 ± 0.9 24.2 ± 3.6 42.6 ± 5.6 59.0 ± 5.3 34.7 ± 6.1 59.0 ± 10.2 3.5 ± 0.8
PA (n=272) 38.5 ± 6.5 6.8 ± 1.0 24.7 ± 3.0 42.9 ± 4.4 51.1 ± 2.9 34.9 ± 5.3 65.0 ± 10.4 3.3 ± 1.1

corn_silage2The aNDF is lower than it was in corn silage harvested last October in both NY and PA. Starch values were similar and starch digestibility was lower than in October of 2015. Harvest DM is in the ideal range for storage in horizontal bunkers, bags, and top loading upright silos (http://bit.ly/1PgHNs5).

The lower starch digestibility can be overcome some with longer ensiling times. Starch digestibility increases in the bunk over time and starch in the diet could become a problem for rumen health and animal performance.

Unlike the samples from September 2016, fiber digestibility was lower in the samples from NY. There was only one sample for fiber digestibility from PA.

corn_silage1

Tagged with →