2023's spring and summer saw frequent wet spells and lower levels of sunshine, which had an impact on harvesting windows and according to Trouw Nutrition GB analysis, and has resulted in variable silages across the UK, with some wet and unpalatable, and some dry and low protein grass silage. Maize silage yields were good if the weather allowed the harvest at the right time, albeit starch levels are lower than usual. High maize silage diets coupled with lower protein gras silages may leave a shortfall of rumen degradable protein and fermentable energy in rations. .
Putting the economics to one side, a dairy cow has a genetic potential to produce milk and they will try their best to achieve this whether we choose to feed them appropriately or not. We must meet a cow’s nutrient requirement and feed for genetic potential or risk a negative effect to health or milk production. The skill for a nutritionist during challenging periods of feed cost is to manage the purchased feed cost per litre to mitigate the impact, whilst not sacrificing health or yield. Easy!