caa a22 4500 605464251 CHVBK 20210128100257.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10499-014-9807-1 doi (NATIONALLICENCE)springer-10.1007/s10499-014-9807-1 The effect of two different feeds on growth, carapace colour, maturation and mortality in marbled crayfish ( Procambarus fallax f. virginalis ) [Elektronische Daten] [Katrin Kaldre, Kerli Haugjärv, Mari Liiva, Riho Gross] The effect of two different feeds (30% protein common carp feed without astaxanthin and astaxanthin-rich discus feed with 20% shrimps and 46% protein) on growth, carapace colour, maturation and mortality in marbled crayfish (Procambarus fallax f. virginalis) was examined under laboratory conditions. Feeding trials were carried out during 123days at room temperature in triplicate per treatment (45 crayfish per treatment, 15 crayfish per aquarium). At the end of the trial, crayfish fed with discus feed exhibited uniformly the same dark blue carapace colouration, while crayfish fed with carp feed exhibited significantly lighter and more variable colouration in shades of grey. Growth was significantly faster (P<0.001) among crayfish fed with higher protein content discus feed than among crayfish fed with lower protein content carp feed. Neither the effect of aquaria on growth nor the effect of feed on maturation and mortality were found to be significant (P>0.05). Thus, our study showed that the type of feed had a significant impact on the growth and carapace colouration, but not on the maturation and mortality in the marbled crayfish. Springer International Publishing Switzerland, 2014 Marbled crayfish nationallicence Procambarus fallax f. virginalis nationallicence Feed nationallicence Astaxanthin nationallicence Carapace colour nationallicence Growth rate nationallicence Kaldre Katrin Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut Haugjärv Kerli Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut Liiva Mari Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut Gross Riho Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut Aquaculture International Springer International Publishing 23/1(2015-02-01), 185-194 0967-6120 23:1<185 2015 23 10499 https://doi.org/10.1007/s10499-014-9807-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10499-014-9807-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kaldre Katrin Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut NATIONALLICENCE 700 1- Haugjärv Kerli Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut NATIONALLICENCE 700 1- Liiva Mari Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut NATIONALLICENCE 700 1- Gross Riho Department of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 48, 51006, Tartu, Estonia aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/1(2015-02-01), 185-194 0967-6120 23:1<185 2015 23 10499