What should be paid attention to rosin-fed yellow mealworms?

What should you be careful about when feeding yellow mealworms with rosin? Tenebrio molitor, commonly known as yellow mealworms, has a broad diet and can thrive on various agricultural by-products, livestock manure, and even distillery waste. These materials can be processed using fermentation systems like the Ginba Fermenter to create high-quality feed. In many regions, wine lees (also known as wine slag) are abundant and can serve as an excellent feed source. However, there are some important considerations when using them. The main concern is the presence of rosin and other compounds from the brewing process. Wine lees often contain a variety of organic and inorganic acids, which can lower the pH level significantly. Before using them for fermentation or feeding, it’s essential to adjust the pH to around 7–8 using lime. This is similar to the ideal pH range for goldfish fermentation, which also works best at around 8. Maintaining the right pH ensures optimal microbial activity and prevents digestive issues in the mealworms. Additionally, when selecting raw materials, avoid those that already have a strong odor or smell spoiled. These may contain harmful bacteria or toxins that could negatively affect the mealworms’ health. If using straw or other fibrous materials, make sure they are properly crushed to improve digestibility. It’s also beneficial to mix several types of raw materials together to create a more balanced and nutritious feed. When introducing new feed sources, start gradually. Increase the proportion of the new material over time rather than replacing the existing feed all at once. This helps the mealworms adapt without causing stress or digestive problems. Following this principle ensures a smooth transition and better overall growth and development.

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