en aquaculture aquaculture پژوهشي Orginal research papers <pre style="text-align:justify"> <span style="font-size:10pt"><span style="line-height:115%"><span courier="" new="" style="font-family:"><a name="_Hlk119405536"><span style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">A 90-day feeding trial was run to </span></span></span></span></a><span lang="EN" style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">evaluate the effect of replacement of soybean meal (SBM) with sesame seed cake (SSC) at 0, 25, 50, 75, and 100% in the isonitrogenous (30% crude protein) and iso-lipidic (8% crude lipid) experimental diets on growth, nutrient and economic efficiency, and biochemical body composition of juvenile <i>Cyprinus carpio</i></span></span></span></span><span style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">.</span></span></span></span> <span style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Common carp with an average initial weight of 83.09&plusmn;0.06 g with a density of 30 numbers were randomly fed experimental diets in 15 tanks (300 L) with the flow-through system. The results showed that survival and growth rate, visceral indices, and proximate biochemical composition of the whole body and the fillet except protein did not significant between treatments. The feed intake, feed conversion ratio and protein efficiency ratio, calcium and phosphorus, nitrogen retention efficiency, nitrogen wastage except for SSC25, and phosphorus wastage except for SSC25 and SSC50 were not significantly affected by the dietary treatments. </span></span></span></span><span lang="EN" style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Economic conversion ratio of diets decreased, </span></span></span></span><span style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">whereas </span></span></span></span><span lang="EN" style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">profit index increased with increasing levels of dietary SSC. Reduced cost of SSC100 was about 35.10%. </span></span></span></span><span style="font-size:11.5pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">The number of white blood cells was significantly higher in SSC0 than in other experimental treatments. Hemoglobin was higher in SSC75 than in SSC0. Among serum parameters, cholesterol was significantly lower in SSC0 treatment than in SSC25 treatment. Comparable growth performance, nutrient wastage, economic efficiency, and some blood factors indicated that SBM could be replaced by 75 to 100% SSC in the formulated diet of <i>C. carpio</i> juveniles. </span></span></span></span></span></span></span></pre> Replacement, Sesame seed cake, Soybean meal, Body composition, Economic efficiency, Cyprinus carpio 678 700 http://jifro.ir/browse.php?a_code=A-10-2070-3&slc_lang=en&sid=1 F. Hekmatpour Hekmatpourf@gmail.com 100319475328460049042 100319475328460049042 Yes South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran F. Amiri Farokh.amiri@gmail.com 100319475328460049043 100319475328460049043 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran M. Yooneszadeh Fashalami M_yooneszadeh@yahoo.com 100319475328460049044 100319475328460049044 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran S. Nazemroaya Samira.nazemroaya@gmail.com 100319475328460049045 100319475328460049045 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran A.S. Sadr Ayehsadr@gmail.com 100319475328460049046 100319475328460049046 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran S.M. Mousavi seied1356@yahoo.com 100319475328460049047 100319475328460049047 No Department of Fisheries, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran S.A. Mortezavizadeh saheb.mortezavi@gmail.com 100319475328460049048 100319475328460049048 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran F. Kianersi Farahnaz.kianersi@gmail.com 100319475328460049049 100319475328460049049 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran M. Ahangarzadeh Minaahangarzadeh@gmail.com 100319475328460049050 100319475328460049050 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran H. Houshmand Houshmand.hossein@gmail.com 100319475328460049051 100319475328460049051 No South Iran Aquaculture Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Ahvaz, Iran M. Sharifian Sharif_23m@yahoo.com 100319475328460049052 100319475328460049052 No Iranian Fisheries Science Research Institute, Agricultural Research, Education, and Extension Organization (AREEO), Tehran, Iran