Progress of fish gene technology research in China

The varieties of carp we mentioned before are all hybrids. The traits of the offspring of the hybrid carps will be segregated. So new hybrids should be made every year and at least two varieties of parental fish must be conserved in order to obtain the hybrid carps. This can be inconvenient in practice. Jian carp is the first variety of common carp that was produced by artificial breeding in China. The technique applied in its breeding procedure includes hybridization, family selection and gynogenesis. Jian carp has several advantageous characteristics, for example, a high growth rate and fine body shape. The growth advantage of Jian carp is significant. The body weight increment outperforms purse red carp, Yuanjiang carp and Heyuan carp by a factor of 141-250 %, 80-96 % and 40-42 %, respectively. The gross production of this carp may be more than 30% greater than other varieties of common carp.