Do Worms Need Protien In Their Diet?

“So far I’ve fed my worms carrots, apples and bananas which I’ve put through a food processor first. They seem to be doing all right. I had the wormery in a red dustbin as a Christmas present, but I worry that I’m not giving them any protein. Advice would be appreciated.” ~ Anne Hill

Hi Anne,

This is a good question.

If we only feed worms with vegetable and fruit peelings, where do the worms get their protein from?

In fact, some worm farmers feed only paper to the worms, how do the worms even obtain enough energy to survive at all?

The answer is that worms do not feed on the waste material alone.

It’s actually other organisms and micro-organisms, which do a lot of the breaking down of the waste, that the worms mainly feed on. That is why keeping a high varied eco-system in a worm system is important. Worms feed on smaller particles of the waste (which has been partially broken down) as well as feeding on the micro-organisms.

There is evidence that worms enjoy feeding from protozoa. They are single celled micro-organisms and are small in size (50µm to 1mm), high in protein and low in fat making them a great treat for worms.

How do protozoan grow?

Different types feed differently on different sources and many of them absorb their food from their surroundings. Some directly absorb nutrients around them while some feed on bacteria themselves. That is also one of the reasons why high microbial life in a worm system is important.

You may have come across some worm farmers adding extra protein supplements (such as alphaalpha pellets) into a wormery system in the hope to bulk up the mass of the worms for them to fetch premium prices.

This is perfectly fine, and it does work!

For those who are more interested in knowing how to bulk up the mass of their worms here is a recipe you can try. You should start seeing results in a 6-10 weeks.

5 parts chicken layer pellets or chick starter 2 parts wheat or rice bran 2 parts alfalfa pellets 1 part whole wheat flour 1 part agricultural lime 1 part powdered milk

Add this recipe together with the food waste you usually use to feed. The lime is used to balance back the acidity. Although through this you will get fatter worms, please be aware that your cost will go up too. It is a great recipe when you if you have a high demand for fat worms for fishing!

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