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3 culture of tubifex tubifex tubifex by using 3 different diets 49-0512-47033-004 oligochates tubificidae deposit feeders mccall and tevesz 1982 3 3 1 saccharomyces cerevisiae 2 5 k3po4 0.5 kno3 0.2 1 36 20 -4 3 5x109 2 3 40 2 1 3 10 48 -4 8x12x20 15 1 23x40x45 30 5 68 60 12 10 9 3 5

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2 9.00 15.00 30 0.2 17.00 3 1 1 3 2 3 1 2 3 1 1-2 0.2 4 2 1 3 3 1 2 3 1 10.8+0.03 5.57 0.13 2.08 0.03 2 10.66 0.06 11.5 0.18 14.20 7.99 5.20 7.99 208.6 +107.7 3 10.17 3.92 18.20 +7.99 24.10 +7.99 8.20 7.99 346.7 +161.7 2 4 1 2 3 4 0.04-0.12 40-120 0.14-0.16 15 22-30 28-38

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2 3 3 3 sediment rodriguez et al 2001 25 10 3 cross 1976 leech 0.57-1.78 1 calanoid 1 ahmed mollah 1992 20 3 ahamed m.t and f.a mollah 1992 effect of various levels of wheat bran and mustard oil cake in the culture media on tubifid production aquaculture vol.107:107-113 cross w.u 1976 study of predation of leeches on tubificid worms under laboratory conditions ohio j.sci 764 164-166 mccall p.l and m.j.s tevesz 1982 the effects of benthos on physical properties of freshwater sediments in animal-sediment relations the biogenic alteration of sediments edited by p.l mccall and m.j.s tevesz plenum press new york pp 105-176 rodriguez p martinez-m m arrate j.a and navarro e 2001 selective feeding by the aquatic oligochaete tubifex tubifex tubicidae clitellata hydrobiologia vol 463:133-140.

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