Plan to prevent long-term forage shortages
LIVESTOCK farmers facing forage shortages following one of the wettest winters on record are being urged to measure and monitor forage stocks and consider alternative cropping options this spring to safeguard feed for the coming winter.
Speaking on a Mole Valley Farmers’ podcast, one of the company’s nutritionist and technical product managers, Dr Kerensa Hawkey, and their head of grassland and forage agronomy, Lisa Hambly, outlined the dire situation being reported nationwide.
Ms Hambly said that with only seven dry days since the beginning of December, farmers’ ability to carry out fieldwork has had a massive impact on forage availability, with many looking to fill the gap over the next month before turnout.
They urged all farmers to measure stocks by taking the length, width, and height of the clamp to establish the volume, and then sampling the silage to get the dry matter. From this, farmers can work out how many tonnes of fresh weight are available, and by dividing that by how many tonnes a day are being used, will indicate the number of feed days le.
Dr Hawkey said: “Don’t just count the dairy cows; what about youngstock, dry cows and those few beef cows in the other shed? If you can reduce those animals, that’s less mouths to feed.”
Forage shortage solutions
The experts detailed alternative feed options for farmers faced with forage shortages. They included:
• Buying in silage
• Zero grazing grass if equipment is available
• Straw – although prices are high
• Fodder beet
• Forage extender nuts and blends
• Sugar beet and soya hulls as a straights
• Moist blends
• Grazing grass for short periods. Cows can achieve 90% of their daily grass intake in the first three hours aer they are turned out post-milking.
Any changes, however, should be gradual. Dr Hawkey said: “A cow will take two weeks to adapt to a new diet change, so anything we do change can’t be done suddenly.”
And with crop yields expected to be down and the quantity and quality of first cut silage looking variable, farmers were advised to take action to safeguard adequate forage stocks for the winter ahead.
Ms Hambly said: “A lot of autumn crops didn’t manage to get in the ground, and we’ve been late getting into the spring, so people might want to think about putting an extra field into maize
because that’s one way of getting a lot of high dry matter yield and good quality energy pretty quickly.”
They also warned that first-cut silage quality may not be where it should be, with possible fermentation diculties due to low sugar levels and soil contamination.
Dr Hawkey said: “Fresh grass testing has highlighted many samples with low sugar levels. We’re seeing a massive range in precutting analysis from about 5% to 12% on a dry matter basis in terms of sugar. We don’t want it lower than 10. The fibre content of those samples is also running higher than we like, and I’m not sure if it’s going to come down enough for where we’d like it to be.”
The duo also alerted listeners to the risk of soil contamination when taking the first cut. Ms Hambly added: “Many farmers haven’t been able to roll fields because it’s been too wet, so the soil levels could be higher than you think.
“A challenge with some of the older leys is there could be a lot of dead material at the bottom of the sward. If you cut too low, that will be taken into the clamp, and there’s the risk of soil contamination.
“Liing the cutting height could be massively beneficial this year – say 5-6cm for your standard leys, then 7-9cm for hybrids or new leys. Also, think about your chop length and how well it will compact in the clamp,” said Ms Hambly.
“Speak to your contractor, tell them exactly what you want in advance and have a plan. Fresh grass testing will help tell you when the grass is ready to be cut.”
To maximise fermentation in the clamp, they suggested using a silage additive. “Whatever you can do to help achieve a good fermentation will pay dividends,” said Dr Hawkey.