| dc.description.abstract | A study of “The Comparison Growth Rate of Brachionus plicatilis after Gave
Food in a treatment Medium” has been conducted in Maret 2009. The research was
carried out at Animal Sistematic Laboratorium at Biology Department, Mathematic
and Natural Science Faculty, North Sumatera University. The research used Non
Factorial Complete Randomized Design with 4 treatments medium, that is medium of
M0 consists of 200 mg/2l chicken manure (kontrol), medium M1 consist of 200 mg/2l
chicken manure + 4 mg/l TSP + 4 mg/2l Urea, medium of M2 consist of 200 mg/2l
chicken manure + 4 mg/l TSP + 4,5 mg/2l Urea and medium of M3 consist of 200
mg/2l chicken manure + 4 mg/l TSP + 5 mg/2l Urea and 6 replications which forth
time for first observation and fourth times for observation after gave food at eigth day.
The result indicated differences growt rate of Brachionus plicatilis population
after gave food. Highest growth of Brachionus plicatilis population was found at first
observation, second day until fourth day. The best growth of Brachionus plicatilis
population was found in M2 medium with number 5,836 ind. x 2 x 10-3 x day-1.
Followed by M3 medium with number 5,614 ind. x 2 x 10-3 x day-1and then M1
medium with number 5,509 ind. x 2 x 10-3 x day-1. But the worst growth rate was
found in M0 medium with number 3,969 ind. x 2 x 10-3 x day-1.
Base on statiscal analysis result showed that culture medium was highly
significant to average of growth rate between each treatment medium. | en_US |
