Effects and relationship of artificial dietary on growth rate and biological indices in Rutilus frisii Kutum

An experiment was conducted for determination on the effects and artificial dietary relationship on supply optimum growth of Rutilus frisii kutum Kamenskii, 1901 in larval duration stage for increasing of growth efficiency until reaching to 4gr weight in controlled condition. Fish larval samples divided into 4 experimental groups treat in controlled condition laboratory that each group consisted of 3 replies with 30 samples in each reply. Artificial diet that fed on the every groups of fish larval samples have same fixed food supplement.A,B,C and D experimental groups treat fed on 3,7,11 and 15 % of body weight respectively. Feeding procces doing replied 3 times in everyday. In our experiment at the end, were calculated total biomass of each experimental groups treat and natural mortality percentage. Some indices were determined by using standard technique in Mazandaran fisheries research center in sari. The level of feeding which leads to different growth of each experimental group treat weight in Rutilus frisii kutum larval stage that range of weighting has reached between 1.9 gr- 3.3 gr. But by comparison such as natural mortality and optimum growing rate in (B) treatment group rather better than other experimental groups. From obtained results, it seems that other biological indices and parameters relationship measurement in A, B, C and D experimental groups treats weren’t found logical different.

biological indices, biomass, optimum growth, larval duration stage