List of Articles ضریب چاقی

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  1 - Survey on some biometrical parameters of Chalcalburnus mossulensis Fish infected by Ligula intestinalis (cestoda)
  علی Parsa سمیرا Bahramian
  Chalcalburnus mossulensis from the Cyprinidae family is one of the indigenous fish in many water sources. Ligula intestinalis is one of the infective parasites of this fish. In this study, The effect of this parasite in some biological parameters of this fish like: Weig More

  Chalcalburnus mossulensis from the Cyprinidae family is one of the indigenous fish in many water sources. Ligula intestinalis is one of the infective parasites of this fish. In this study, The effect of this parasite in some biological parameters of this fish like: Weight, Total length, Condition Index (I.C.) and Gonadosomatic Ratio (G.S.R.) was investigated. After random sampling, collected 300 samples from Gheshlagh Lake of Kordestan, Species and age of samples was detected. In 25% of samples the infection was seen. The result of this infection was the negative effect in all biological parameters (p<0.05). In other words, There is a significant difference between the means of biometrical parameters in infected and non infected samples. By considering the negative effects of this parasite on Cyprinidae family, It is necessary to control the spread of this parasite in different water sources.  Manuscript profile
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  2 - Comparison of Growth factors in Monosex Rainbow Trout and Ordinary Fish Cultured in Raceway Pounds
  H. Hosseinzadeh Sahhafi T. Bashti D. Zargham
  In many species of finfish, females exhibit higher growth rates than males and achieve larger sizes. In addition, in some species, males mature before reaching marketable size. Therefore, there is great interest among fish farmers to produce all-female stocks. In this p More

  In many species of finfish, females exhibit higher growth rates than males and achieve larger sizes. In addition, in some species, males mature before reaching marketable size. Therefore, there is great interest among fish farmers to produce all-female stocks. In this project we tried reversing the sex of rainbow trout larvae using 17β estradiol and direct method, further more finding the optimum dose of this natural estrogen for endocrine sex reversion of rainbow trout (O. mykiss). Treated females (12±1 g.) were tagged with implant elastomer tag (ABC tag) and released into 11 farms in Kohkiloieh, Fars and Charmahal Provinces. Each farm received 3000 tagged fingerlings. After 6 months Specific growth rate, condition factor and growth performance were calculated for each farm. Results revealed that mono-sex females have better Growth rate than other (males) and the average weight was 342±11 while 317±9 for males. Specific growth rate was 2.1, 2.2 and 1.9 for mono-sexed females, normal females and males respectively. Weight gain was 258, 261 and 232 for mono-sexed females, normal females and males respectively. Condition factor also was 1.1, 1.1, and 0.9 for mono-sexed females, normal females and males respectively. There were significant differences between Gonad weight of males (32 g.) and females (3.4 g.) (P<0.01). Results confirmed the increasing of flesh capacity production in mono-sex females of rainbow trout. Manuscript profile
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  3 - بررسی برخی پارامترهای پویایی جمعیت سیاه ماهی (Capoeta trutta) در رودخانه الوند استان کرمانشاه
  مجتبی پوریا اصغر عبدلی محمد کاظمیان فتحعلی نوری حسین خارا فرشاد اجرایی
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  4 - رابطه بین طول و وزن و تعیین ضریب چاقی ) K( ماهی گیش پوزه دراز( Carangoides chrysophrys) در آ بهای استان هرمزگان
  عیسی کمالی رضا دهقانی سید عباس حسینی
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