Optimizing Chicken Blood Quantity for Sustainable Tubificid Worm Cultivation
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Abstract
Tubificids are widely used in aquaculture and valued as a key live food organism for both aquarium enthusiasts and commercial fish breeders. As the abundance of tubificids in nature is declining rapidly, it is essential to culture these worms using low-cost media ingredients to meet their increasing demand. Hence, this study focused on determining the optimal quantity of chicken blood as a soaking medium for fermenting the media ingredients (30% soybean meal, 20% wheat bran, 20% mustard oil cake, 20% cow dung, and 10% sand) for cultivating tubificid worms. The worms were cultured for 90 days under four treatments in flow-through culverts (160×25×10 cm³) with identical media, varying only in the soaking agents: Treatment I (2 L·kg-1 chicken blood), Treatment II (4 L·kg-1 chicken blood), Treatment III (6 L·kg-1 chicken blood), and Treatment IV (control, rice gruel). The highest yield (578.97±17.03 mg·cm-²) (p<0.05) was recorded on the 70th day of culture in Treatment II, indicating that this medium is well-suited for large-scale production of tubificid worms. Furthermore, the water quality parameters such as temperature (26.93–30.37 °C), dissolved oxygen (6.10–7.07 ppm), and pH (7.2–7.6) were found to be within favorable limits, which confirms their appropriateness for culturing this live food. Using 4 L·kg-1 chicken blood as the soaking medium significantly enhanced tubificid yield, offering a cost-effective solution to meet the growing demand for live food in large-scale aquaculture.
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