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A study was undertaken to determine the effects of various dietary carbohydrate to lipid ratios on growth indices, feed performance and body composition of benni (Barbus sharpeyi) juveniles. Nine iso-nitrogenous (25% crude protein) and iso-caloric (3.5 kcal/g digestible energy) semipurified diets with varying carbohydrate to lipid (CHO L) ratios (0.8 to 8.8 g/g) were tested for 8 weeks with three replicates. Each replicate was stocked with 20 fish (initial mean weight 16.47 ± 0.25 g) that were fed to satiation thrice daily. Twenty seven flow-through fiberglass tanks of 300 L capacity with a flow rate of 1.5 L min-1 were used for rearing the fish. Maximum weight gain (WG), weight gain rate (WGR), specific growth rate (SGR), feed conversion ratio (FCR), feed efficiency ratio (FER), protein efficiency ratio (PER), apparent net protein utilization (ANPU) and fulton,s condition factor (K) were observed in fish fed a 44% carbohydrate and 9% lipid diet, corresponding to a CHO/L ratio of 4.8. Whole body moisture, crude protein and ash content of fish fed varying CHO:L diets did not show any significant differences among treatments (P>0.05), But whole body lipid content of fish decreased (P

A study was undertaken to determine the effects of various dietary carbohydrate to lipid ratios on growth indices, feed performance and body composition of benni (Barbus sharpeyi) juveniles. Nine iso-nitrogenous (25% crude protein) and iso-caloric (3.5 kcal/g digestible energy) semipurified diets with varying carbohydrate to lipid (CHO L) ratios (0.8 to 8.8 g/g) were tested for 8 weeks with three replicates. Each replicate was stocked with 20 fish (initial mean weight 16.47 ± 0.25 g) that were fed to satiation thrice daily. Twenty seven flow-through fiberglass tanks of 300 L capacity with a flow rate of 1.5 L min-1 were used for rearing the fish. Maximum weight gain (WG), weight gain rate (WGR), specific growth rate (SGR), feed conversion ratio (FCR), feed efficiency ratio (FER), protein efficiency ratio (PER), apparent net protein utilization (ANPU) and fulton,s condition factor (K) were observed in fish fed a 44% carbohydrate and 9% lipid diet, corresponding to a CHO/L ratio of 4.8. Whole body moisture, crude protein and ash content of fish fed varying CHO:L diets did not show any significant differences among treatments (P>0.05), But whole body lipid content of fish decreased (P

This study was carried out to identify proper broodstock of Barbus sharpeyi and Barbus grypus using working fecundity indices. For Barbus sharpeyi three female groups were chosen based on previous experiences that included treatment 1: 650±300g, 1±0.5 years, (T.L) 40.68±2.7cm, treatment 2: 1350±350g, 2.5±0.5 years, (T.L) 47.92±4.63cm and treatment 3: 2200±400g, 4±0.4 years, and (T.L) 59.62±3.56cm. The same male broodstock (700±80g) and 2 year old fish were used for all treatments. For Barbus grypus three female groups were chosen using previous experiences that included treatment 1: 2212.5±780g, 2.5±0.5 years, (T.L) 62.68±6.7cm, treatment 2: 4518±780g, 4±1 years (T.L) 79.12±4.36cm and treatment 3: 7712.5±171g, 7.7±1.3 years and (T.L) 92.62±3.13cm. The same male broodstock (1400±100g) and 2 year old fish were used for all treatments. Female broodstock of the two species were injected 3mg/kg of PG hormone two times at an interval of 10 hours and males were injected 2mg/kg. The maximum working fecundity was seen in treatment 2 for Barbus sharpeyi (33000±1450) and Barbus grypus and (13000.37±4651.57). Functional fecundity were calculated for Barbus sharpeyi in all treatments which was significantly different between treatment 2 and other treatments for the two species. After this stage, the working fecundity was decreased in treatments. We conclude that treatment 2 is the best for selection of broodstocks in the two fish species.

In order to determination of feeding requierments, in first step hole bady analysis and some biological characteriestis of Barbus sharpyie was investigated in khouzestan provience in 2001-2004. In this study 413 benni (Barbus sharpyie) in length size range (30 to 440 mm) were caught from different resources in region (mainly Shadegan and Horalazim wet lands) Fishes were classified in different length groups for carcasse analysis, The highest protein was observed in (30 to 95 mm) and (100-140 mm) length size groups, and also the rate of protein decrease with Length increase The lowest lipid (body fat) rate was observed in (100-149 mm) length size group and also with decreasing the protein in length groups, lipid was increased in Benni (Barbus sharpeyi) body. The maximum rate of body ash was measured in (30-95 mm) length size group, after this with increasing of the length, the rate of ash decreased gradually, so the minimum ash rate was observed in (30-440 mm) length zise group. Phas phorous and calcium variations were the same as ash changing the maximum energy was obtained in (250-350 mm). That was in harmony with increasing in this length groupe. Falty acids in Benni bady were higher then X-3 and were similar to falty acids profiles in carp fishes bady Benni protain in cludes Essential amino acids, Arginine, Histidine, Iucine, Methionine, Valine, Phenylalanine, theronine, Lysine, that were the same in different individual. Regarding length weight relation. Benni growth is Allometric and regarding stomach contents and increasing of gut length Index in different length size groups, its feeding habits is herbivorous . Iranian Fisheries Science Research Institute Published

Determination of suitable density of Barbus sharpeyi in polyculture system. This study was carrid at in shaban fisheries research station in Khozestan provience, During 6 month from way to Nov. This research was done in nine ponds with 1720m area in 3 treatments and 3 repeatition for each by use of random statistic Analysis. Barbus sharpeyi was reared with chinese carp (Amor, Bighead and siluer carp) and common carp, in polycoture to obtain the best density for B. sharpeyi. Treatments include : polyculture as controp treatment 1, polyculture plus 150 B. sharpei and 2 polyculture plus 300 B. sharpei. In all treatmonts the ratios of food, or qanic and inorganic pertilizer were the same. In two treatments (1 and 2), in which B. sharpei was added to system, only food was added to compare with control treatment. Hygien and disease control was done by priority of prevention. Acording to physical and chemical paramaters the ponds water were suitable. Sorvival rate in all treatments was 95 percent. Anova showed no signipicant different in fish production between 3 treatments (P= %5). Average of production in 3 treatments was 4946, 5979/3, 5082/3 kg/ha respectinely Groos in come in hectar there was no significant difference in gross income in hectare except for B. sharpei species. So in treatment 1 and 2 we obsereved in come increasing. Mean prices of one kg in No 1 and 2 treatment was different from control treatment. In net and Gross in come (which is the most important factor for choosing this method), significant difference was observed only between No 1 treatment and control treatment. Specific growth rate was significant only in treatment No 1. But condition factor showed no significant differences in non of them (species). So No 1 treatment composition had better result than others. Iranian Fisheries Science Research Institute Published

Iranian Fisheries Science Research Institute Published