September 2026
Overall Whole Crop Testing Performance
80% of the FAA Group member laboratories achieved an overall A grade for their whole crop silage testing accuracy in this round. The good grades awarded demonstrate the accuracy of the results that they report to customers. Many laboratories achieved consistent A grades for DM (Dry Matter), NDF (Neutral Detergent Fibre) and starch testing performance. One laboratory did not submit results in time for review and was therefore excluded from this testing round review and awarded an F grade.
Dry matter: Overall performance was very good. 73% of laboratories achieved A grades and 20% a B grade.
Starch: Testing performance was very good. 73% of laboratories achieved an A grade, and 20% a B grade.
NDF: The laboratory NDF testing performance was good. 73% of member laboratories achieved an A grade, indicating very good testing accuracy, while 20% achieved a B grade, still indicating good testing performance. This PT Scheme round of whole crop silage included some samples at the extremes of the dry matter ranges expected for this silage type. Some laboratories found these samples challenging to test for NDF, which slightly affected the accuracy of some results they reported. Including more extreme samples however assesses laboratory testing performance across a wider range of sample types and demonstrates the robustness of FAA Group members’ testing. It is therefore encouraging that A and B grades are still attained.
August 2026
The FAA Group has graded its testing performance for the first round of grass silage analysis in the 2026-2027 Silage Proficiency Testing Scheme season.
All member laboratories contributed to the new season grass silage analysis. The average grading performance of the group testing of Dry Matter (DM), Protein (CP) and Neutral Detergent Fibre (NDF) was good. The average grades of 87% A and 13 % B grades were awarded.
Dry matter testing performance was excellent, with 87% A grades and 13% awarded. Crude protein testing performance was also excellent, with 93% of the laboratories receiving A grades, and 7% a B grade. NDF testing performance was good, 53% of the laboratories received an A grade and 46% received a B grade.