Abstract:
This study was conducted at Universiti Malaysia Terengganu, Malaysia. Samples of
Pacific White Shrimp, Litopenaeus vannamei were obtained from commercial
hatcheries of Agrobest Shrimp Farm in Nenasi, Pahang. Samples were cultured for
fourteen days in order to investigate the survival rate of L. vannamei in different
treatment of low salinity water (0.5 ppt) supplemented with 5 ppm K
+
, 40 ppm K\ 20
ppm Mg2\ 160 ppm Mg2+
and mixed cations of 5 ppm K
+
with 15 ppm Mg2+
and 40
ppm K
+
and 120 ppm Mg2+
. 160 ppm Mg2+ showed the highest survival rate which is
80% and the lowest survival rate (23.3%) is the control tanks where the low salinity
water of 0.5 ppt was not supplemented with any cations. Mixture of 5 ppm K
+
with 15
ppm Mg2+ showed high survival rate and efficient for shrimp survival and growth.
