Laju Pertumbuhan Populasi Brachionus Plicatilis O. F. Muller Diperkaya Beberapa Variasi Dosis Scott’s Emulsion pada Kombinasi Kotoran Ayam Broiler, Pupuk Urea Dan Tsp

Abstract

Research on, “The Growth Rate of Brachionus plicatilis O. F. Muller Population With The Addition Some Variation of Scott’s Emulsion Dose In Combination of Broiler Feses, Urea and TSP”, has been conducted in May until June 2013, carried out at Animal Systematic Laboratory in Biology Department, Mathematics and Natural Science Faculty, North Sumatera University. The research used an experiment method and complete random device analyse, with 4 treatment medium, those are M0 (combination of broiler feses, urea and TSP medium without an addition of fish oil Scott’s Emulsion) (control), M1 (combination of broiler feses, urea and TSP medium + Scott’s Emulsion 0,1 ml/2 l), M2 (combination of broiler feses, urea and TSP medium + Scott’s Emulsion 0,2 ml/2 l) and M3 (combination of broiler feses, urea and TSP medium + Scott’s Emulsion 0,3 ml/2 l), with 6 replications and 5 times period of observation. Rata-rata pertambahan jumlah individu populasi tertinggi didapatkan pada waktu pengamatan keempat (hari ke-8), yaitu pada media M3, sebesar 24.554 ind./2 l dan terendah didapatkan pada perlakuan media M0 (kontrol) yaitu sebesar 9.054. ind./2 l pada hari pengamatan yang sama. And the highest population growth rate is obtained at the first time of observation (2nd day) in M3 medium at 2,536 ind. x 2 x 10-3 x day-1, and followed by M1 medium at 2,489 ind. x 2 x 10-3 x day-1, then M2 medium at 2,447 ind. x 2 x 10-3 x day-1, and have the lowest growth in M0 medium at 2,383 ind. x 2 x 10- 3 x day-1.