caa a22 4500 605464987 CHVBK 20210128100300.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10499-014-9838-7 doi (NATIONALLICENCE)springer-10.1007/s10499-014-9838-7 Comparison of growth and digestive enzymes activity of kutum ( Rutilus kutum ) during ontogeny fed with live prey and artificial feed [Elektronische Daten] [Fatemeh Hassantabar, Abolghasem Fereidouni, Hossein Ouraji, Sedigheh Babaei, Ali Jafarpour] The effects of two diets, live prey (Artemia nauplii) and artificial diet, were evaluated on growth performance and digestive enzymes activities of kutum (Rutilus kutum) larvae during a period of 30days post hatching (dph). Larvae were stocked in 115-L aquariums at a density of 60 individual L−1 and fed ad libitum four times a day. According to the results, artificial feed fed group showed higher growth rate compared to Artemia nauplii fed group. However, the survival rate of larvae fed with Artemia nauplii was significantly higher than artificial diet. Pancreatic and intestinal enzymes were detected in kutum larvae before starting the first feeding. It is showing that enzyme synthesis in the early stages of development is not triggered by food ingestion but rather is genetically programmed. Fluctuations of the specific activity of pancreatic enzymes or intestinal enzymes were normally observed during larval development as a result of different metabolic and physiological events. Apart from fluctuations, the specific activity of trypsin and chymotrypsin in Artemia fed group was higher compared to artificial diet at the end of the rearing period. Artemia fed group exhibited a higher amylase value than artificial feed fed group. In the case of lipase, the same trend was recorded in larvae fed live food on 8dph. Conversely, the specific activity of alkaline phosphates and aminopeptidase N was significantly higher in artificial feed fed group, suggesting better developmental and nutritional status in former than the latter group. We can conclude that the kutum digestive tract is well adapted to carbohydrates digestion which confirms that digestive physiology of kutum is proximate to that of omnivorous species. Springer International Publishing Switzerland, 2014 Kutum ( Rutilus kutum ) nationallicence Enzyme activities nationallicence Alkaline phosphatase nationallicence Amylase nationallicence Aminopeptidase N nationallicence Trypsin nationallicence dph : Days post hatching nationallicence AP : Alkaline phosphatase nationallicence AN : Aminopeptidase N nationallicence U : Unit nationallicence Hassantabar Fatemeh Sari University of Agricultural Sciences and Natural Resources, Sari, Iran aut Fereidouni Abolghasem Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut Ouraji Hossein Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut Babaei Sedigheh Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran aut Jafarpour Ali Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut Aquaculture International Springer International Publishing 23/2(2015-04-01), 597-612 0967-6120 23:2<597 2015 23 10499 https://doi.org/10.1007/s10499-014-9838-7 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/s10499-014-9838-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hassantabar Fatemeh Sari University of Agricultural Sciences and Natural Resources, Sari, Iran aut NATIONALLICENCE 700 1- Fereidouni Abolghasem Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut NATIONALLICENCE 700 1- Ouraji Hossein Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut NATIONALLICENCE 700 1- Babaei Sedigheh Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran aut NATIONALLICENCE 700 1- Jafarpour Ali Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Khazar Abad, Km 9 Darya Boulvard, P.O. Box 578, Sari, Iran aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/2(2015-04-01), 597-612 0967-6120 23:2<597 2015 23 10499