Farming Monthly National April 2018 | Page 25

| Grassland volume you have. While cost per acre will generally be higher in a multi-cut system (four to five cuts plus), due to the higher levels of inputs and greater harvesting costs, the higher dry matter production over the season means there is a cost benefit just on the amount of material utilised. When the extra energy produced is calculated it shows that the multi- cut system will produce 50% MJ/acre more than a traditional three-cut system. This leads to a 14.5% reduction in cost per MJ,” concludes Paul. Table 1: Comparison between a traditional silage system (3 cuts) and a multi-cut silage system (5 cuts) 3 Cuts 5 Cuts Yield & DM Tonnes/acre Dry Matter (%) Dry Matter (Tonnes/acre) Clamp Losses (%) Amount Fed (TonnesDM/acre) 15 28 4.2 10 3.78 17 35 5.95 10 5.35 Nutrient Values Energy ME (MJ/Kg DM) Protein (% in DM) 10.8 14 11.7 16 Cost Freshweigh