this study was carried out to evaluate the effects of different dietary protein (30, 35, 40%) and lipid levels (10, 12, 14%) on growth performance and physiological changes of juveniles caspian kutum (rutilus frisii kutum). six hundred and seventy five fish (1.15 ± 0.01 g) were distributed into 27 aquaria (45 l) and were fed four times daily for 8 weeks. interaction between protein and lipid di...

Body composition and fatty acid profile of the body tissue of Caspian kutum (Rutilus frisii kutum) fish larvae were determined from fertilized egg to 50 days post hatching (dph). Feeding with rotifer started from day 3 to day 7 thereafter they were fed with dry food until the end of the experiment. The changes observed in lipid content and the decrease in lipid levels during larval ontogeny ref...

Body composition and fatty acid profile of the body tissue of Caspian kutum (Rutilus frisii kutum) fish larvae were determined from fertilized egg to 50 days post hatching (dph). Feeding with rotifer started from day 3 to day 7 thereafter they were fed with dry food until the end of the experiment. The changes observed in lipid content and the decrease in lipid levels during larval ontogeny ref...

background: biofloc technology is considered  a method that degrades organic waste by microorganisms and produces bacterial flocculation. objectives: this study was performed to evaluate of the application of biofloc technology in therearing of common carp (cyprinus carpio) fingerlings in intensive culture. methods: the experiment was designed in four treatments (commercial diet as a control, 7...

Willomitzer J.: Therapy of Major Ectoparasitoses in Grasscarp (Ctenopharyngodon idella ) Fry and Fingerlings. Acta vet., 49, 1980: 279-282. Dipping, short-term and long-term baths in solutions of common substances (potassium permanganate, formaline, common salt) currently recommended for the control of ectoparasites of the genera Chilodonella, Trichodinella and Dactylogyrus in grasscarp fry and...

The Caspian Kutum, Rutilus Kutum (Kamensky 1901) specimens were sampled by purse seine in the northern Iranian coast of the Caspian Sea at four locations:  Feridoonkenar Shahed, Mahmoudabad Khoram, Lariim Azadi fishing coop, and the Shiroud River in Ramsar city. “Back-calculation” is a retrospective method of estimating the characteristics of growth of fish in terms of length and rate of growth...

To assess changes of gonad development and sex steroids hormones of R. frisii kutum, broodfish were captured during spawning season 2010 (March-April) and induced intramuscularly with following hormone treatments: single injections of 1 μg kg b.w. LHRH-A2, combination of LHRH-A2 with two dopamine antagonists as follows: 1 μg kg b.w. LHRH-A2 + 5 mg kg-1 b.w. PIM, 1 μg kg b.w. LHRH-A2 + 2.5 mg kg...