Nghiên cứu tạo vật liệu ban đầu phục vụ chọn giống tôm sú (Penaeus monodon)

Abstract

     This paper presents the results of research on founder stocks for base population of selective breeding programs of giant tiger prawn (Penaeus monodon). The research collected broodstocks from four locations including wild shrimp from Thailand (T), from Singapore (A), in Vietnam (N) and domesticated shrimp in Vietnam (G). Totally, sixty-nine full-sib families of base population (G0) were produced successfully. Proportion of female shrimp from group A and N that contributed to 16 crosses was 34.5% and 30.9%, respectively. While, male shrimp from A and G group accounted for 18.9% and 30.2%, respectively. The G0 families were evaluated growth in four different rearing conditions: in indoor raceway with closed bio-security recirculation system and in outdoor ponds at three geophysical areas, the Middle of Vietnam (Khanh Hoa province); Western South of Vietnam (Bac Lieu province) and Eastern South of Vietnam (Vung Tau province). The results showed that all genotype correlations were positive (> 0), ranging from 0.29 - 0.85. Genotype correlations between the indoor system and three outdoor ponds in Khanh Hoa, Bac Lieu and Vung Tau were low 0.70, 0.42 and 0.29 respectively. The genotype and environment interactions were moderate. These results suggested that it is necessary to increase further genetic variation of founder stocks for a giant tiger prawn breeding program.