Keeping potted yellow mealworms is a great way to produce up to 10 kilograms per month, even without full-time staff. This project can be managed during spare time, making it ideal for small-scale breeders or hobbyists. The breeding equipment is simple and cost-effective—old wash basins, tin boxes, or wooden containers can all work as long as they are intact, leak-proof, and have smooth inner walls to prevent the worms from escaping. If the container’s inner surface isn’t smooth, you can cover it with tape to stop them from climbing out. A 60-mesh sieve is also essential for separating larvae from waste.
Once you obtain the mealworm species, select healthy individuals that are large, uniform in size, active, and have a bright color. For a standard basin, start with 0.3 to 0.6 kg of larvae. Fill the container with feed such as wheat bran or corn flour, and introduce the larvae. The feed should be about 10-20% of the insect's weight. After 3 to 5 days, the worms will have eaten the feed, and you can use the 60-mesh sieve to remove their feces. Continue feeding them regularly, and occasionally add water-rich foods like vegetable peels or melon rinds to maintain moisture levels.
When the larvae grow into adults, separate them and place them in a container lined with newspaper. Spread a thin layer of fine feed (about 1 cm thick) on the paper and introduce the adult mealworms. At around 25°C, adults will begin laying eggs approximately 6 days after emerging. Since mealworms are social insects, it’s important to keep them at a density of 1,500 to 3,000 per square meter to encourage mating and egg-laying. Provide them with high-quality feed, including a mix of grains, multivitamins, and water-rich foods like leaves or melons to support reproduction.
As the adults lay eggs, they deposit them onto the paper. After 3 to 5 days, the egg paper will be fully covered. Replace it with fresh paper and collect the old ones. Place the egg papers in a pot and wait for them to hatch. Under optimal conditions (24–34°C), the eggs will hatch within 6 to 9 days. Newly hatched larvae are very delicate, so avoid touching them with your hands to prevent damage.
Once the larvae hatch, keep them together in the same container. After 15 to 20 days, the feed in the pot will be nearly gone, and you can perform the first sieve. Use a 60-mesh sieve to separate the larvae from the feces, and repeat this process every 3 to 5 days. Feed them regularly, ensuring that the amount provided lasts for about 3 to 5 days. When feeding leafy vegetables or melon peels, do so one day before sieving. Make sure to feed the worms first, then provide the moist food. Remove any uneaten vegetation the next day to prevent spoilage. During summer, monitor the humidity level in the container to avoid mold growth, which can harm the larvae.
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