Every May and June we get the same call: the feed has gone off after three days. Wet feed spoiling is the main practical drawback of Beer Poosa, and it is also the one most within your control. Here is what works.
How long it actually keeps
| Conditions | Safe usable window |
|---|---|
| Hot, humid (March – June) | 2 – 3 days |
| Warm, dry | 3 – 5 days |
| Cool weather / monsoon shade | 5 – 7 days |
| Properly ensiled and sealed | Several weeks |
Treat these as outer limits, not targets. The safest plan is simply to buy what you will use in three or four days and come back for more.
Storing an ordinary load
- Get it into shade immediately. Sun on a sack accelerates spoilage more than anything else you do.
- Spread it out rather than leaving it heaped. A deep pile holds heat in the middle and ferments from the inside.
- Keep air moving. A shaded, open-sided space beats a closed shed, which traps heat and moisture.
- Raise it off the floor on a pallet or planks. Ground contact means damp and rodents.
- Cover loosely against flies and rain, but do not seal it airtight unless you are deliberately ensiling. A half-sealed warm pile is the worst of both.
- Take from one end and work through, rather than digging from the middle.
Preserving a bulk load properly
If you buy a large quantity — say a lorry load for a bigger herd — you can preserve it by ensiling, which is the same principle as fodder silage. Pack it tightly into a drum, silo pit or heavy-gauge bag, press out as much air as you can, and seal it properly. Some farmers add common salt at roughly 1% by weight to help.
Done well, sealed spent grain keeps for several weeks. The whole thing depends on excluding air: a bag with a small tear will spoil right through. Check seals, and once you open a container, use it within the normal few-day window.
How to tell it has gone off
Use your nose before your eyes. Fresh spent grain smells mildly bready, slightly sweet, a little yeasty. Trust these signs:
| Sign | Meaning | Action |
|---|---|---|
| Mild bready, sweet smell | Fresh | Feed normally |
| Sharper sour or vinegary smell | Fermenting | Use immediately; do not keep |
| Alcohol or solvent smell | Spoiling | Do not feed |
| White, green or black fuzzy patches | Mould | Discard the affected feed |
| Slimy texture, cattle refusing it | Spoiled | Discard |
On mould, be strict. Mycotoxins can reduce yield, cause reproductive problems and harm liver function, and the visible mould is not always the full extent of it. Cattle will often refuse mouldy feed before you notice it — if animals that normally eat well start leaving it, check the feed before you assume they are unwell.
Buying to match your storage
The cheapest bulk price is a false economy if a quarter of the load spoils. Work out your daily requirement, multiply by three or four days, and buy that. For ten cows at 8 kg a day, that is roughly 240–320 kg — not a fortnight's worth.
This is exactly why we turn stock over daily rather than holding it. Call before you come during summer and we will tell you honestly when the current load arrived.