First-cut silage better quality than in 2024

The results from analysis of first-cut silages in NI suggest quality is up on 2024 levels.

Initial data obtained from the feed trade show average first cuts in NI have a metabolisable energy (ME) content at 11.1MJ/kg dry matter, which compares to just 10.6 MJ in 2024 first cuts.

Those 2024 first cuts were negatively impacted by a cold spring and while 2025 silages are significantly better, the average is still behind an ideal scenario for ME of at least 11.5 MJ.

However, an average D-value of 69.5% in 2025 first cut is close to the optimum of 70%. The D-value reflects how digestible silage is and indicates how effectively cattle can utilise the energy and protein content of the forage.

Other parameters suggest first cuts should support good intakes, with dry matter at 32.8% and pH at 4.16. Protein is also good at 14.25%.

Lower

Second cut silages show lower nutritional values, with a D-Value of 66% and 10.66 ME both falling below optimum levels. This will likely require additional concentrate supplementation to meet livestock energy demands. However, dry matter is reasonably high at an average of 30.8% which should encourage good intakes, while protein is at 13.65%.

It is a similar picture with third cuts. Dry matter averages 34.8% and protein is high at 14.72%. However, ME is down at 10.58MJ, so extra energy will be required in the diet to support animal production.