Comparison on the Culture Effects of Four Different Strains of Macrobrachium rosenbergii

A comparative study on culture effects of four different strains of Macrobrachium rosenbergii(new introduced strain,former introduced strain,positive hybridized strain and reverse hybridized strain) was conducted in this paper.The results indicated that the new introduced strain had the most productive capability.In the test basin,the yield of the new introduced strain was 3.40% higher than the reverse hybridized strain, 8.35% higher than the positive hybridized, and 12.16% higher than the former introduced strain. In the test pond, the unit yield of the new introduced strain was 21.24% higher than the reverse hybridized strain, 27.60% higher than the positive hybridized, and 11.12% higher than the former introduced strain ,and the heterosis of the hybridized strain is not distinctive.