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NWF Weekly Grass Watch – 28th June 2021

Grass Growth

Grass growth rates dropped significantly, by 19kg DM/ha/day on the previous week, to average 53.3kg DM/ha/day. It is also 6.7kg DM/ha/day below the 6-year average. The decline can be attributed to continued unfavourable grass growing conditions, with intermittent rainfall and dry conditions seen in many areas.
All regions have suffered a decline in grass growth, with the East having the largest fall of 41kg DM/ha/day and the South-East seeing the smallest drop of 7kg DM/ha/day.

Milk Yield from Grazing (MYFG)

Average MYFG has also continued to fall to M+7.9litres/day versus the previous weeks figure of M+11.2litres/day. A reduction in average potential grass dry matter intake, of, to 11.1kg/day is the likely cause of the decreased MYFG.
However, there is large variation in samples, with some samples indicating a potential negative MYFG figure. Therefore, for accuracy with rationing, farms should look toward individual analysis to ensure a more accurate prediction of circumstances.

Management Considerations

With the recent significant decline in grass growth seen across many regions, grazing deficits may be an issue. It is essential that good grassland management strategies are used to optimise grazing quality. This includes monitoring sward heights to ensure target entry and residual covers are achieved, as well as managing rotation lengths, and ensuring stocking densities are optimal. Other considerations to maximise grass utilisation are:
• Monitor buffer rations – Adjust buffer rations based on grazing available and grass quality, which varies throughout the grazing season
• Establishing DMI targets – Supplement according to target intakes and monitor to ensure these targets are being reached.
• Formulate compounds to match grass quality – Average grass values show high RFC’s and a low fibre index, therefore, using NutriOpt parameters grass and compound intake can be balanced much more effectively.

For more information on maximising your homegrown forages potential, speak to our experts on 01829 797 125 or order NWF grass seed online HERE.

Source: Trouw Nutrition

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