A Treatment for Rice Straw and Its Use for Mealworm (Tenebrio molitor L.) Feeding: Effect on Insect Performance and Diet Digestibility
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View abstract on PubMed
Summary
This summary is machine-generated.Treating rice straw with laccase, ultrasound, and ascorbic acid enhances its nutritional value for yellow mealworm (Tenebrio molitor) larvae. This circular economy approach improves insect growth and feed conversion, utilizing plant by-products effectively.
Area Of Science
- Agricultural Science
- Biotechnology
- Entomology
Background
- Plant by-products present underutilized resources for sustainable feed production.
- Circular economy models promote the reuse of agricultural waste for animal nutrition.
- Valorizing low-nutritional-value plant fibers is crucial for efficient resource management.
Purpose Of The Study
- To develop a combined treatment (laccase, ultrasound, ascorbic acid) to hydrolyze rice straw.
- To evaluate the impact of treated and untreated rice straw on yellow mealworm (Tenebrio molitor) larvae growth and diet digestibility.
- To assess the potential of rice straw as a sustainable feed component for insect rearing.
Main Methods
- Rice straw was treated using a combination of laccase, ultrasound, and ascorbic acid.
- Diets were formulated with varying inclusion levels (0-100%) of treated and untreated rice straw.
- Larvae growth performance and diet digestibility were assessed through feeding trials with Tenebrio molitor.
- Uric acid levels were determined to complement the growth and digestibility data.
Main Results
- The combined treatment hydrolyzed 13.2% of the rice straw's vegetable fibers.
- Diets incorporating treated rice straw significantly improved Tenebrio molitor larvae weight and feed conversion ratio.
- At 100% inclusion, both treated and untreated rice straw diets yielded comparable results, suggesting a limit to the treatment's benefit at high levels.
- The treatment enhanced the utilization of recalcitrant plant by-products.
Conclusions
- Combined laccase, ultrasound, and ascorbic acid treatment effectively improves the nutritional quality of rice straw for Tenebrio molitor.
- This method offers a viable strategy for incorporating low-nutritional-value plant by-products into insect feed.
- The study supports novel methodologies for insect rearing and the circular economy in agriculture.
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