U radu su izneseni prvi rezultati uzgoja šarana u kavezima u akumulaciji Grabovo. Akumulacija se sastoji od Gornjeg i Donjeg jezera ukupne površine oko 75 ha. Kavezna platforma sa 16 kaveza smještena je u Gornjem jezeru koje je za potrebu uzgoja produbljeno na 5 m. U svaki od 16 kaveza dimenzija 5x5x2,5m nasađeno je po 398 do 440 jedinki dvogodišnjeg šaranskog mlađa prosječne pojedinačne mase 700 do 750 g•kom-1. Od fizikalno-kemijskih parametara tijekom uzgojnog razdoblja svakodnevno je mjerena koncentracija otopljenog kisika, temperatura vode i pH vrijednost, a ostali parametri (nitrati, nitriti, ugljični dioksid, organsko onečišćenje) dva puta mjesečno. Riba je hranjena peletiranom krmnom smjesom s 32 % sirovih bjelančevina i 10 % masti. Promjer peleta iznosio je 8 mm. Dnevna količina hrane određivana je prema hranidbenim tablicama, a na osnovi mase ribe, temperature vode, koncentracije otopljenog kisika i drugih fizikalno-kemijskih parametara. Nakon 109 hranidbenih dana ostvaren je prirast od 141,3 do 162,2 kg. Dnevni prirast varirao je od 3,66 do 3,85 g•kom-1. Vrijednosti specifične brzine rasta (SGR) kretale su se od 0,093 do 0,168 %•dan-1. Hranidbeni koeficijent nakon 109 hranidbenih dana iznosio je 3,67 do 4,13, a uginuća od 2,73 do 7,00 %.This paper presents the first cage fattening results in the storage lake Grabovo. The lake is composed of the Upper and Lower Lake that covers an area of ca. 75 ha. A platform containing 16 cages is located in the Upper lake which was dug to the depth of 5 m for this purpose. Cages dimensions 5x5x2,5m were inoculated with 398 to 440 individuals of 2-year old carp fry of mean weight from 700 to 750 g•individuals-1 . During the experimental season some physico-mechanical properties were measured, like dissolved oxygen concentration, water temperature and pH value. Fish were fed
fodder pellets containing 32 % of raw proteins and 10 % of lipids. Pellets were 8 mm in diameter was. On the basis of the individual mean weight of carp fry, water temperature, dissolved oxygen concentration and other physico-mechanical properties daily food amount was prescribed in accordance with nutrition tables. Weight gain from 141.3 to 162.2 kg was established after 109 feeding days. Daily individual weight gain varied from 3.66 to 3.85 g•individuals-1. Specific growth rate (SGR) values were from 0.093 to 0.168 %•day-1. Nutritive coefficient after a 109 feeding days was 3.67 to 4.13, and mortality was 4 %
