Disease resistance and growth of two inbred carp Cyprinus carpio L. lines and their hybrid in pond culture |
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| Authors: | G F Wiegertjes A Pilarczyk W B Van Muiswinkel |
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| Institution: | Department of Experimental Animal Morphology &Cell Biology, Agricultural University, Wageningen, The Netherlands;Polish Academy of Sciences, Fish Culture Experimental Station - Golysz, Chybie, Poland;Department of Experimental Animal Morphology &Cell Biology, Agricultural University, Wageningen, The Netherlands |
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| Abstract: | Recently, we examined the specific resistance of two carp lines (W and R8) and their hybrid, to experimental bath challenges with atypical Aeromonas salmonicida. These experiments indicated a genetic difference in resistance, the W carp being most susceptible. In the present study, fish of the same spawnings were grown in pond culture, to examine the correlation between disease resistance observed in the laboratory and survival rate in the field, as well as to examine the production potential of the hybrid. Hybrid advantage resulted in higher average weights at the field samplings. Correlation of the field survival rates with specific resistance to A. salmonicida was pronounced. Survival of the W carp after winter was much lower (47%) than survival of the R8 (93%) and hybrid carp (93%). |
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