I spent a good portion of the nineties convinced that if I just bought the most expensive, multi-coloured mineral lick on the market, my weaning rates would magically climb. I was wrong. I was essentially buying fancy packaging for expensive salt, watching my margins evaporate while my cows stood there looking just as lethargic as they did before. Most of the literature out there on how to supplement trace elements is written by salesmen who wouldn’t know a hungry heifer from a hole in the ground; they want you to believe that more is always better. But if you don’t understand what your soil is actually lacking, you aren’t feeding your livestock—you’re just flushing cash down the drain.
I’m not here to sell you a subscription to a miracle cure or a bag of dust that promises the moon. I want to talk about the reality of what actually works when the ground is wet and the grass is thin. I’ll show you how to look at your field conditions first, how to read a soil report without getting a headache, and how to decide if a lick is a necessary investment or just another piece of kit destined to sit unused in the shed.
Table of Contents
Understanding How to Supplement Trace Elements
Before you go buying a pallet of whatever the salesman says is the “new standard,” you need to understand that you aren’t just feeding animals; you’re managing a biological budget. Most people treat supplementation like a magic wand, but it’s more like a fine-tuning knob. You have to look at the soil first. If your ground is washed out, no amount of expensive lick will fix the fundamental problem. You’re looking for optimal trace element levels that match what your specific acres can actually support, rather than just following a generic chart that was written for a farm in a completely different climate.
It’s also a matter of understanding the bioavailability of mineral supplements. I’ve seen men spend a fortune on high-end blocks only to find the cattle won’t touch them, or worse, the minerals are so poorly formulated they pass straight through the animal without being absorbed. It’s a waste of good money. You have to balance the need to correct trace mineral deficiency symptoms—like poor coat condition or low fertility—against the very real risk of overdoing it. Too much of a good thing can be just as costly as too little.
Key Things to Know
Before you go buying the biggest bag of lick available at the mart, you need to understand that more isn’t always better. I’ve seen men spend a fortune on high-spec supplements only to find their ewes are still flagging during lambing. The problem usually isn’t the amount; it’s the bioavailability of mineral supplements in the specific soil you’re grazing on. If your ground is depleted, you aren’t just feeding them; you’re trying to fix a structural problem with a handful of powder.
You also have to watch for the subtle signs. Most people wait until they see a cow stumbling or a calf born with a crooked spine before they panic, but by then, you’ve already lost the profit. Identifying trace mineral deficiency symptoms early—like poor coat condition or a sudden drop in fertility—is the difference between a profitable season and a write-off. However, don’t go overboard trying to compensate. There is no such thing as a “safety margin” when it comes to trace element toxicity risks; you can cook a liver just as easily as you can starve one, and neither will do your bank balance any favours.
Practical Tips and Steps
First, stop looking at the bag of minerals and start looking at your soil tests and your grass. You can’t fix a deficiency if you don’t know what’s missing, and more importantly, you can’t fix it if the cow can’t actually use what you’re giving her. I’ve seen men spend a fortune on high-spec lick only to realize the bioavailability of mineral supplements was nil because their soil pH was so far off that the nutrients were effectively locked away. If the ground is wrong, the supplement is just expensive grit.
When you do decide to step in, don’t just grab the cheapest bucket on the shelf. You need to watch for trace mineral deficiency symptoms—like poor coat quality or a sudden drop in weaning weights—but don’t wait until the whole herd looks ragged. Start with a slow introduction to avoid upsetting the rumen, and for heaven’s sake, don’t go overboard. There is a fine line between a healthy animal and one suffering from trace element toxicity risks, and chasing “more” usually just leads to a higher vet bill and a thinner margin.
Common Mistakes to Avoid
The biggest blunder I see is the “more is better” approach. I’ve seen men spend a fortune on high-spec mineral mixes, thinking they can outrun a poor pasture by sheer volume. You can’t. If you don’t account for the bioavailability of mineral supplements in relation to what’s actually in your soil, you’re just paying for expensive manure. It’s a common trap: buying a premium product because the brochure looks professional, only to find the animals aren’t absorbing a lick of it because the pH of your grazing is all wrong.
Then there’s the danger of the “spray and pray” method—guessing at what’s missing without a proper soil or forage analysis. People start seeing trace mineral deficiency symptoms, like poor coat condition or low fertility, and they scramble to throw every bag of lick available at the herd. This leads straight into trace element toxicity risks, particularly with copper. You end up swinging from one extreme to the other, and in both cases, the only thing that grows is your debt. It’s better to be precise and slightly conservative than to play chemist with your livelihood.
Final Thoughts
At the end of the day, don’t go looking for a magic pill in a plastic tub to fix a broken system. If you spend all your time worrying about trace element toxicity risks because you’re overcompensating for poor pasture, you’re just chasing your tail. You can buy the most expensive lick or bolus on the market, but if the ground is spent and the weather has been nothing but wet, those minerals won’t do much more than make your urine more expensive.
My advice is to keep your eyes on the animals and your feet on the ground. Watch for the subtle things—the way a heifer carries herself or a slight dip in lambing percentages—rather than just staring at a spreadsheet of optimal trace element levels. It’s about balance. You want to bridge the gap between what the grass provides and what the animal needs to thrive, not try to outsmart nature with a chemistry set. Keep your records tight, watch your margins, and remember that the most expensive supplement is the one that doesn’t actually work for your specific bit of ground.
Five ways to stop throwing money at the soil and start feeding the animals
- Don’t trust the salesman’s brochure over a soil analysis. I’ve seen men spend a fortune on cobalt because a rep told them to, only to find out their real issue was a lack of selenium or just plain old bad drainage. You wouldn’t buy a heifer without looking at her teeth; don’t buy minerals without looking at your ground first.
- Watch the weather, not just the calendar. If we’ve had a sodden spring and the grass is growing too fast, those trace elements are going to wash straight through the system before the animal can even grab them. Supplementing during a growth spurt is different from supplementing during a drought; the timing is half the battle.
- Stop assuming more is better. There is a very thin line between a cow that is nutritionally supported and one that is being poisoned by over-supplementation. I’ve seen more wasted cash in expensive, high-dose licks that nobody needs than I have in actual feed costs. Stick to what the testing says you’re missing.
- Check the delivery method against your actual setup. A fancy lick might work wonders in a lab, but if your sheep can’t reach it or your cattle are too distracted by the silage to bother, it’s just expensive grit sitting in a trough. If the kit doesn’t fit the way your animals actually move through the field, it’s a wasted investment.
- Look at the feet and the fleece, not just the scale. If you’re only supplementing to get a higher weaning weight, you’re missing the point. I’d rather see a cow with a bit less weight but a coat that isn’t falling out and feet that aren’t soft. The real profit is in the animals that stay healthy enough to keep working for you.
The Bottom Line on Trace Elements
Stop treating mineral supplements like a magic wand; if your soil is spent and your grass is thin, you’re just pouring money into a bucket with no bottom.
Watch the feet and the fertility, not just the labels—the real value of supplementation shows up in your calving intervals and your lameness rates, not in a shiny brochure.
Don’t buy the hype of the newest, most expensive premix until you’ve actually looked at what your ground is lacking; half the time, you’re paying for marketing instead of nutrition.
The Bottom Line on Minerals
At the end of the day, supplementing trace elements isn’t about buying the most expensive bag of premix on the market or following the latest glossy brochure. It’s about knowing your ground, understanding your grass, and realizing that a mineral block is only as good as the animal actually eating it. You can spend a fortune on high-spec supplements, but if you haven’t checked your soil tests or accounted for the rainfall that’s leaching everything out of your topsoil, you’re essentially just throwing money into a hedge. Keep your eyes on the livestock, watch their condition, and remember that consistency beats a sudden burst of expensive nutrition every single time.
Farming is a game of margins, and most of those margins are won or lost in the details that don’t make the headlines. You won’t get a trophy for having the most sophisticated mineral program, but you will certainly feel the difference in your bank balance when your weaning weights are up and your vet bills are down. Don’t let the marketing talk distract you from the reality of your own fields. Trust your eyes, trust your records, and keep your focus on the three pillars of a working farm: the grass, the feet, and the cash flow. That is how you survive the bad years and make the good ones count.
Frequently Asked Questions
If my soil tests come back looking decent, am I just wasting money by putting more minerals in the trough?
If your soil tests look decent, you aren’t necessarily wasting money, but you might be chasing ghosts. A soil test tells you what’s in the dirt, not what’s actually in the blade of grass or, more importantly, what’s in the cow. If your ground is good but your ewes are still coming in thin or showing signs of deficiency, the minerals aren’t moving from the soil into the animal. Check your grass first.
How do I know if the deficiency is actually coming from my grass or if I'm just looking at the wrong symptoms in the herd?
You have to stop looking at the animal and start looking at the soil. If you see a sudden dip in fertility or a wave of ataxia, don’t just reach for the lick; check your field maps. If the symptoms are popping up in specific paddocks but not others, it’s the ground. If the whole herd is flagging regardless of where they graze, you’ve likely misread the symptoms entirely. Check the grass first.
Is there any point in buying the expensive branded lick if a basic salt and mineral block does the same job for half the price?
If your grass is decent and your soil tests aren’t a disaster, a basic salt and mineral block is usually plenty. I’ve seen lads spend a fortune on branded licks that are mostly just fancy packaging and marketing fluff. But, if you’re pushing a high-performance ewe or a heavy cow through a dry spell when the grass has gone hollow, that extra bit of copper or selenium in the expensive stuff might actually pay for itself. Don’t buy the brand; buy the deficiency.
