ผลของอาหารเสริมฮอร์โมนซีโรโทนิน และโปรเจสเตอโรนต่อการพัฒนารังไข่ในแม่พันธุ์กุ้งขาว Litopenaeus vannamei / อนุตตร โพคะรัตน์ศิริ = Effects of supplementary diet with serotonin and progesterone on ovarian development in white shrimp Litopenaeus vannamei / Anuttara Pokharatsiri
A study of ovarian development on hormonal effect was conducted with 5 formulated diets; control diet, progesterone mixed diet, serotonin mixed diet, serotonin mixed diet with progesterone mixed diet alternating weekly and dried sand worm mixed diet. Female white shrimp (weight 35.88±3.35 g) from a domestic farm were used for the experiment in a closed recirculating water system. Four replications were run in each treatment. The results showed that at 30 days of experiment, shrimp fed progesterone mixed diet gave the highest growth rate (7.59±3.64%) but not significant difference to other treatments. After feeding 30 days, half of shrimps in each treatment (n=4) were uniablated and fed for 15 days with the same diet to observe ovarian development using gonadosomatic index (GI). The results showed that in none-ablated groups serotonin mixed diet and progesterone mixed diet alternating weekly had the highest growth rate (7.02±1.33%) and significance different between progesterone mixed diet and dried sand worm mixed diet. Control diet gave the highest GI (1.827±0.670 %) but not significant difference to other treatments. In uniablated groups, dried sand worm mixed diet gave the highest growth rate (3.89±2.59%) but not significant difference to other treatments. Serotonin mixed diet with progesterone mixed diet switching weekly gave the highest GI (2.89±1.547%) but not significant difference to other treatments.
