The effect of the combined addition of astaxanthin and Lactobacillus on the growth and hemolymph characteristics of Haliotis discus hannai
Kyeong Sig Lee, Hye-ri Nam, Young Dae Oh, Gun-do Kim, Young Bea Seo and Han Kyu Lim
Jeollanam-Do Ocean & Fisheries Science Institute
This study investigated the effect of astaxanthin, synthesized from a marine bacterium (Paracoccus haeundaensis), combined with a culture solution of Lactobacillus (Lactobacillus helveticus) on the growth and physiological responses of the abalone Haliotis discus hannai. The presence of astaxanthin in feed did affect the survival, whereas 100 ppm astaxanthin in feed positively affected the growth, of H. discus hannai. These results indicate that the optimal concentration of astaxanthin in feed has a positive effect on the growth of H. discus hannai, and Lactobacillus in feed has no effect on animal growth. Abalone treated with 100 ppm astaxanthin showed significantly lower glucose levels and superoxide dismutase and lysozyme activities in hemolymph compared with other treatments (p < 0.05). Therefore, the optimal level of astaxanthin in feed may have a positive effect on physiological homeostasis in H. discus hannai.
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