Effects of increase diet protein on feeding frequency and growth and survival of Caspian kutum larvae (Rutilus frisii kutum,kamensky 1901)
Subject Areas : New Technologies in Aquaculture Development
Keywords: Protein, Fish powder, Feeding frequency, Keywords: Survival, SFK, Kutum,
Abstract :
Abstract One of the important matters in aquaculture is achieve balance between rapid fish growth and optimum use of provided food. In culture kutum larval, feeding management is very important because suitable feeding in a good time can decrease survival and increase growth. This study was done with 5 treatments and 3 times repetition: Treatment A: two times feeding per day with SFK, Treatment B: one time feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment C: two times feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment D: three times feeding per day with mixture of SFK and fish powder (25% weight SFK), Treatment E: four times feeding per day with mixture of SFK and fish powder (25% weight SFK). In each treatment in this examination feeding regularity were 8,11,14,17 hours. It's necessary to note that rate of feeding is based on 15 percent of whole weight of larval body fishes on a day. Results indicated there was a significant difference between weight and length gain. Fish larval in control treat that was fed with SFK diet had the lowest weight and length and fish larval that was fed with the higher protein level had the most length and weight for four-time feeding per day.
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