Tag Archives: Hen muck

What sort of rubbish are we supposed to feed livestock now?

There is a lot of discussion about food waste. I came across an article with the snappy title, “The UK wastes millions of tonnes of food every year: here’s how we can change that.” If you’re interested it’s at https://theconversation.com/the-uk-wastes-millions-of-tonnes-of-food-every-year-heres-how-we-can-change-that-162783

The article makes some useful points, “In the case of pig farmers in the UK, this system is causing an industry-wide crisis. UK pig farms are governed by the highest regulatory standards in the world, to ensure the best health and welfare for the animals.

But if consumers keep demanding cheaper and cheaper meat, it could make UK pig production economically unsustainable, driving farmers out of business. If that happens, the UK would inevitably see an increase in imported pig meat which doesn’t comply with national standards – actively promoting poorer farming practices. For example, when reared in environments with a greater number of pigs per pen than UK standards, animals have lower access to food and water and lack stimulation, causing a much lower quality of life.”

The authors are absolutely right, we’ve watched the process happen when we introduced sow stalls and the EU didn’t. We merely exported our pig industry and consumers who could care less about pig welfare (but only by making an effort) just bought the stuff produced in the sow stalls they were supposed to be horrified about.

The answer to the problem is an old one. The authors recommend feeding food waste to pigs?
This is something that has been done for centuries but there is a major problem. Disease. In the UK and EU swill feeding Swill was banned in 2002 after the Foot-and-Mouth Disease (FMD) epidemic. There was a ‘strong suspicion’ that it was caused by illegally feeding untreated swill to pigs. The problem with swill is that the largest suppliers were the NHS and the armed forces. Both organisations were notorious at the time for the amount of cheap, poor quality food they bought from all round the world. If the swill had been cooked to a high enough temperature it would probably be safe. But by 2001 margins were so thin that it was impossible to economically survive if you were doing the job properly.

There again, countries such as Japan, South Korea, Taiwan, and Thailand are promoting swill feeding, whilst the EU is moving back to feeding processed animal protein to pigs and poultry. We’ve walked that road before.

These ideas seem to move in cycles. The feeding of meat and bone meal to cattle started about the time of the American Civil war. During the First World War, it was actually compulsory for livestock feed companies to include it in livestock rations. During the Second World War it was again compulsory. I had nutritional advice leaflets issued by the Ministry of Agriculture which recommended it as an excellent feed for lactating dairy cows. Indeed I remember one feed rep coming onto the farm trying to interest my Father and me in a new calf milk powder. They were calling it chocolac. (Or something very similar.) Just out of interest I queried the ‘chocolate’ aspect.

“Oh no,” said the rep, “there’s no chocolate in it. It’s got added pigs blood. That’s what gives it the colour.”
Father and I just looked at each other and without a word spoken decided to give it a miss. Those who followed the science, used it.

Then not all that long after that, BSE and nvCJD exploded on the scene.

The problem is that Farming is fought over by so many different organisations, lobby groups and political factions, none of whom see anything like a big picture. So we’ll have environmental groups who want large chunks rewilding. I saw one bunch lobbying to have the Crown Estate rewilded. Some of the finest farmland in England but hey, obviously they’re not intending to eat. Or perhaps they don’t intend other people to eat.
Then we get the genuine pressure of people who want food to be cheap. We have people in the UK whose sole cooking facility is a kettle. I talked in a foodbank to a young man who had been ‘rehoused’. He’d been sleeping on the street because of circumstances and the council got him a flat. He went from sleeping on the pavement to sleeping on the floor of his flat. A couple of charities helped him furnish it, but there wasn’t the money for a cooker. Anyway he’d been in care and hadn’t a clue about cooking or food preparation. He couldn’t have used a cooker if he’d been given one. He was hoping for a microwave soon, but as his life savings amounted to about thirty seven pence, it wasn’t going to be a flash one.

Then we get those who are big into recycling and worry about getting to carbon zero. They have an agenda which doesn’t fit in too well with any of the others. So back in the 1970s our A level biology master got us all a cheap subscription to New Scientist and effectively taught us biology from that. But one short article has stuck with me. Researchers had noticed something the rest of us forget. Ruminants cannot digest cellulose. Ruminants aren’t really herbivores. In real terms they feed grass to bacteria and bacteria can digest cellulose. Ruminants then live on the bacteria.

So these researchers pointed out, in reality, it’s a waste of time giving ruminants too much decent quality protein. Yes, some of it gets past the rumen (there’s a lot of work done on ‘rumen bypass protein’) and the cow then digests it herself, rather than leaving it to be gobbled up by the bacteria. But feeding high quality protein to bacteria is just a waste. They can take urea and turn it into protein. They’re not fussy. They’re just amazingly efficient.
Obviously the researchers pointed out that ruminants are a good source of urea as well. But funnily enough they’re not keen on taking it direct. A lot of work was done. I remember reading an article in one of the farming magazines back then. A chap had mixed hen muck, (which is very rich in nitrogen and therefore a brilliant source of protein for bacteria) with (from memory) pressed sugar beet pulp. This is the stuff left when you get the sugar out of sugar beet, it’s pressed to squeeze out the extra water. He mixed equal parts of the two ingredients with a little rolled barley as a starter. He mixed it by shovelling it into a muckspreader which he emptied into an empty silage clamp. When the clamp was full, he covered it with a plastic sheet to keep the air out. It produced an excellent feed that fattened bullocks over winter.

This is excellent news, environmentally. Actually using human waste is theoretically safer, less chance of listeria. Alas humans massively contaminate their wastes with all sorts of disgusting chemicals, so it’s barely fit to spread on farmland as fertiliser. Perhaps if they spent less time pontificating about how green they were and spent more time making sure the muck they produce was properly looked after, we’d all have a smaller environmental footprint.

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There again, what do I know?
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As a reviewer commented, “Jim Webster’s recollections, reflections and comments, about life as a Farmer, are always worth reading, not only for information, but also for entertainment and shrewd comments about UK government agencies (and politicians).
One of the many observations that demonstrate his wryness, is as follows:
There was a comment in the paper the other day. Here in the UK, clowns are starting to complain that politicians are being called clowns. The clowns point out that being a clown is damned hard work, demands considerable fitness, great timing and the ability to work closely with others as part of a well drilled team!”