Response of larval and juvenile rudd Scardinius erythrophthalmus (L.) to different diets under controlled conditions 331

J. Wolnicki, J. Sikorska and R. Kamiński
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J. Wolnicki: Pond Fishery Department in Żabieniec, The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, Olsztyn, Poland
J. Sikorska: Pond Fishery Department in Żabieniec, The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, Olsztyn, Poland
R. Kamiński: Pond Fishery Department in Żabieniec, The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, Olsztyn, Poland

Czech Journal of Animal Science, 2009, vol. 54, issue 7, 331-337

Abstract: The growth and survival of rudd Scardinius erythrophthalmus (L.) were evaluated in a laboratory at 25°C. In 20-day Experiment 1, first-feeding larvae at the age of 4 days post-hatch (initially: TL = 5.7 mm, BW = 0.9 mg) were fed live Artemia nauplii or commercial dry feed (Aller Futura Larvae, AFL) or combinations of both. Even the longest period of initial feeding of nauplii (6 days) was insufficient to obtain satisfactory larval growth after weaning to AFL (TL = 12.4 mm and BW = 17.7 mg vs. TL = 18.9 mm and BW = 68.5 mg for the nauplii-fed fish, significant differences). Nauplii-fed older larvae (24 days post-hatch) were then used in Experiment 2, in which they were fed AFL or Ewos AgloNorse (EAN) dry feeds for 40 days. The EAN diet proved to be significantly (P ≤ 0.05) superior to AFL regarding the final fish growth (TL = 36.5 mm and BW = 506.8 mg vs. TL = 33.4 mm and BW = 392.0 mg ), final survival rates (97.6% vs. 100%) and the incidence of spinal deformities (0% vs. 13.5%).

Keywords: rudd; larvae; juveniles; feeding; growth; survival; body deformities (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:54:y:2009:i:7:id:1723-cjas

DOI: 10.17221/1723-CJAS

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