RESEARCH REGARDING THE EVOLUTION OF CORPORAL WEIGHTES AND FOOD CONVERSSION ON JUVENILE OF SIBERIAN STURGEON (Acipenser baeri) RAISED IN RECIRCULATING SYSTEM

M. BURA, Z.T. SZELEI, A. GROZEA, R. MUSCALU-NAGY, I. BĂNĂŢEAN-DUNEA, SILVIA PĂTRUICĂ

Abstract


The research was performed within the recirculating aquaculture system for sturgeon growth, in Banat's Universsity of Agricultural Sciences and Veterinary Medicine from Timisoara, on 2851 juveniles of Siberian sturgeons (Acipenser baeri), aged between 132-175 days. Juveniles were maintained in 4 tanks with volume of 5.63 m3, fed with granulated feed of 2 mm (44 & 22% PB and GB). Every 2 weeks the weight and body length was determinate on an effective of 30 individuals from each tank. Based on the obtained body weight, it has been established the food quantity used and bioproductive indicators. Having the weight differences between the individuals of a Siberian sturgeon population, it is needed at certain time intervals to practice assortment by body development. At the age of 175 days, Siberian sturgeons reached an average body weight between 90.13 ± 4.56 g and 197.63 ± 7.22 g and average body length between 28.73 ± 0.43 cm and 37.55 ± 0.38 cm. Individual values of minimum and maximum body weight varied between 32 g and 307 g and body length between 24.5 cm and 42 cm. For the entire population of Siberian sturgeons, there is a middle and high variability for the average body weight and a small variability for the average body length. During the 43 experimental days, the 2851 Siberian sturgeons have acquired a real weight gain of 184.66 kg, with a conversion factor of 0.84 kilograms of feed / kg growth and an index of feed conversion of 1.19 kilograms spore / kg feed consumed.


Keywords


Acipenser baeri; recirculating system; body weight; feed conversion

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Faculty of Animal Science and Biotechnologies
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
Phone: +40-256-277160, Fax.: +40-256-277110