The ability of TAN absorption of yucca in freshwater
ABSTRACT: This study was carried out in order to determine the TAN absorption ability of yucca at different yucca concentrations including 0 ppm, 0.25 ppm, 0.5 ppm and 1 ppm, in freshwater. The study was designed with 2 experiments. The first experiment was conducted during 12 hours in 60 liter tanks without fish. The second experiment was implemented in 500-liter tanks for 60 days. One hundred tilapia (Oreochromis niloticus) of 3-5 g in size were stocked in each tank. The tanks were treated with yucca every 14 days. TAN concentration was measured at before and after 6, 9, 12 hours of treatment. All experiments were set up following completely randomized design (CRD) with three replications. The results showed that yucca absorbed TAN efficiently in freshwater, each gram of yucca absorbed 0.415, 0.545 and 0.527 g of TAN after 6, 9 and 12 hours of treatment, respectively.
Source: Hứa Thị Chúc và Trương Quốc Phú. Tạp chí Khoa học Trường Đại học Cần Thơ. Số chuyên đề: Thủy sản (2014)(2): 248-255