The effect high protein and feeding frequency on the growth and survival Kutum larvae in Caspian Sea(Rutilus frisii kutum,kamensky 1901)

Subject Areas : Marine Biology

E.  Shahkar ¹ (Islamic Azad University, Lahijan Branch)
H.  Khara ² (Islamic Azad University, Lahijan Branch)
M.  Sudagar ³ (Gorgan University of Agriculture Sciences and Natural Resource, Fisheries Dept)
A.  Azimi ⁴ (Gorgan University of Agriculture Sciences and Natural Resource, Fisheries Dept)

Received: 2010-11-28 Accepted : 2017-01-06 Published : 2011-03-19

Keywords: Protein, Caspian Sea, Survival, Rutilus frisii Kutum, Fish powder, Feeding frequency,

Abstract :

This study had 8 treatments and 3 replications: Treatment A: one time feeding per day with SFK, Treatment B: two times feeding per day with SFK, Treatment C: three times feeding per day with SFK, Treatment D: four times feeding per day with SFK, Treatment E: one time feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment F: two times feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment G: three times feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment H: four times feeding per day with mixture of SFK and fish powder (25% weight SFK). Each of treatments in this examination were fed regularly at 8,11,14,17 hours. It’s necessary to notice that rate of feeding was based on 15 percent of weight of larval body fishes on a day. Results indicated that there was significant difference between weight and length gain (p<0/05). Fish larvae with one time feeding per day with SFK diet had the higher weight and length and fish larvale that fed with mixture of SFK and fish powder (25% weight SFK) had the most length and weight when they had feeding four times per day.