Molecular phylogeny of three subspecies of common carp Cyprinus carpio, based on sequence analysis of cytochrome b and control region of mtDNA

A total of 80 specimens of common carp Cyprinus carpio were used in present study ranges between 142-156 g with 150 g in average body weight, and between 22-27cm with 25cm in average body length to investigate the effect of magnetized water in blood pictures of fish as well as Aeromonas hydrophila pathogenic bacteria. Fish were randomly distributed using aquarium with dimension 70X40X40 cm upon four treatments, with two replicates for each treatment using magnetized water with different intensity ( 500 , 1000 , 1500 gauss) , while the control treatment free of magnetized water through the period of four weeks . Results shows that the bacteria count were decreased in such magnetized water in comparison with control treatment . The results of statistical analysis show significant differences ( P≤0.01) between all treatments . Results of blood picture test show significant differences ( P≤0.01) between test ,the three treatments containing magnetized water compared with control treatment .It can be conclude that the possibility of using magnetized water in prevention and control of some bacterial diseases in common carp.

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Effects of Some Dietary Additives on Growth Performance and Feed Efficiency of Young Common Carp Cyprinus carpio

Biological and Applied Environmental Research ◽

10.51304/baer.2021.5.1.98 ◽

2021 ◽

Vol 5 (1) ◽

pp. 98-113

Author(s):

Ahmed Mojer

Keyword(s):

Amino Acids ◽

Growth Performance ◽

Common Carp ◽

Cyprinus Carpio ◽

Feed Efficiency ◽

Control Diet ◽

Common Carp Cyprinus Carpio ◽

Exogenous Enzymes ◽

Carp Cyprinus Carpio ◽

And Control

Effects of adding three dietary additives and their mixture to control diet (38% protein) on the growth performance and feed efficiency of young common carp Cyprinus carpio with an average weight of 16.16+0.09 g were assessed. These additives were probiotic (Saccharomyces cerevisiae yeast) (T1), amino acids (lysine and methionine) (T2), a mixture of exogenous enzymes (protease, cellulase, α-amylase, amyloglucosidase, pectinase, beta-glucanase, xylanase, phytase, lipase and beta mannanase) (T3), their mixture (T4) and control (T5). Inclusion of probiotic and exogenous enzymes showed significant (P<0.05) improvement in the growth performance and feed efficiency of the fishes compared with control and other additive diets. Otherwise, the inclusion of amino acids and the additive mixture did not show any significant (P>0.05) improvement compared with the control diet. Probiotic diet (T1) recorded greatest specific growth rate SGR (0.68%/day) and best feed conversion ratio FCR (2.84), followed by exogenous enzymes diet (0.57%/day and 3.44, respectively), while the SGR and FCR values for T2, T4 and control were decreased significantly (P<0.05). Probiotic and enzymes feed additives have proved significant enhancement of fish growth and feed efficiency.

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The Efficacy of Poppy, Papaver nudicaule extract as an Anesthetic for the Common Carp, Cyprinus carpio

Baghdad Science Journal ◽

10.21123/bsj.2020.17.1.0042 ◽

2020 ◽

Vol 17 (1) ◽

pp. 0042

Author(s):

Al-hamadany Et al.

Keyword(s):

Common Carp ◽

Cyprinus Carpio ◽

Health Condition ◽

Partial Recovery ◽

Traditional Use ◽

Common Carp Cyprinus Carpio ◽

Carp Cyprinus Carpio ◽

Recovery Times ◽

The Common ◽

And Control

Aqueous extract of poppy plant) Papaver nudicaule) with five concentrations (50, 100, 150, 200 and 250) mg/l were used to anesthetize fingerlings of the common carp Cyprinus carpio (Mean total length 8.91 ± 0.31 cm and mean total weight 7.72 ± 1.19 gm) instead of the traditional use of MS-222. Results showed that extracted solution of poppy have partial and overall anesthesia effect on these fishes with inverse relationship between the concentrations used and the time needed to reach partial and overall anesthesia, and also direct relationship between concentrations used and time needed for fish recovery. Best results were obtained by using a concentration of 250 mg/l, where time for partial anesthesia was 8 ± 1.52 min., time for overall anesthesia was 10 ± 1.70 min., time needed for partial recovery was 25 ± 2.43 min. and time needed for overall recovery was 35 ± 2.23 min. Fish behavior observations revealed a difference ranging from slow swimming with increasing in breathing rates movements to vertical swimming near the surface, then laying at bottom and too much decrease in breathing rates movements. Results appeared that there were no significant differences (p≥0.01) between glucose concentration in fish blood plasma after recovery and control fishes. So it was concluded that these. The results showed also that there were no significant differences (p≥0.01) in ALP, AST, ALT, LDH and CK among fishes after recovery comparing with the control fishes. Experimental fishes exhibited no stress during anesthesia by using poppy extracted solution. This indicated that the treated fishes exhibited no physiological effects stress which might lead to poor health condition later. The study demonstrated that poppy can be used as an effective anesthetic, as we obtained acceptable induction and recovery times. The poppy can be recommended as suitable anesthetics for fishes (200 or 250 mg/l).

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