Thuỷ Sản

29 THG10

Prevention of White Feces Syndrome, White Gut Disease and White Muscle Disease in Shrimp

Shrimp culture tends to now be developed intensively with upgraded technology for higher and successful production.In many occasions shrimp culture are affected by various diseases and experienced in loss of crop or reduced the production level by various reasons, writes Mr Prakash Chandra Behera, India.
29 THG10

Disease caused by DIV1 in shrimp

DIV1 (Decapod iridescent virus 1) can cause mass death in shrimp with a high rate of infection. The disease results in quick lethality within just two to three days from the first infection until all shrimp in the pond die. DIV1 can infect small and large shrimp as well as white leg shrimp and giant freshwater prawn.
29 THG10

Urgent appeal to control spread of the shrimp microsporidian parasite Enterocytozoon hepatopenaei (EHP)

Enterocytozoon hepatopenaei (EHP) is a microsporidian parasite that was first characterized and named from the giant or black tiger shrimp Penaeus monodon from Thailand in 2009 (Tourtip et al. 2009. J. Invertebr. Pathol. 102: 21-29). It was discovered in slow-growing shrimp but was not statistically associated with slow growth at that time. EHP is confined to the shrimp hepatopancreas (HP) and morphologically resembles an unnamed microsporidian previously reported in the HP of Penaeus japonicas from Australia in 2001. Together, these studies suggest that EHP is not an exotic pathogen but that it is endemic to Australasia. Later, it was found that EHP could also infect exotic Penaeus vannamei imported for cultivation in Asia and that it could be transmitted directly from shrimp to shrimp by the oral route (Tangprasittipap et al. 2013. BMC Vet Res. 9:139). This differed from the most common microsporidian previously reported from cotton shrimp, where transmission required an intermediate fish host, allowing disruption of transmission by the exclusion of fish from the production system.

29 THG10

Những tiến bộ trong Vaccine phòng ngừa Vibrio spp. trên cá

Những tiến bộ trong phát triển Vaccine phòng ngừa Vibrio spp. trên cá mang lại hy vọng dập tắt nhiều dịch bệnh lớn.
28 THG10

Giá cá tra tăng lại... đâm lo

Dù giá cá tra đang tăng và xuất khẩu sang thị trường Trung Quốc đang "hút" nhưng nhiều doanh nghiệp vẫn dè chừng, lo lắng và chờ giá tiếp tục tăng.

28 THG10

Giải quyết ammonia trong nuôi tôm

Hàm lượng ammonia cao là thách thức lớn nhất trong ngành nuôi tôm. Độ độc ammonia liên quan đến tỉ lệ chết cao và thiệt hại kinh tế nghiêm trọng, do đó người nông dân vẫn luôn tìm cách giải quyết chúng nhằm tăng lợi nhuận và năng suất nuôi