Risk factors associated with acute hepatopancreatic necrosis disease at shrimp farm level in Bac Lieu Province, Vietnam

Abstract

Background and Aim: Acute hepatopancreatic necrosis disease (AHPND) is a severe disease in shrimp farms and adversely affected the shrimp industry of Vietnam. So far, the study on risk factors associated with AHPND outbreaks is limited. The objective of this study was to determine the potential risk factors of AHPND at the shrimp farm level in Bac Lieu Province, Vietnam. Materials and Methods: Real-time-Polymerase chain reaction was used to analyze data collected from an active surveillance program of shrimp farms in 2017 in the Vinh Tien and Vinh Lac villages, Vinh Thinh commune, Hoa Binh district in Bac Lieu Province, Vietnam. The matched case-control study selected 20 cases and 20 control farms from 134 shrimp farms. In 2018, face-to-face interviews using structured questionnaires were conducted with the farmers of these selected farms. Results: Of the 59 studied variables, seven had p≤0.2 based on bivariate analyses. The results of multivariable analysis showed that the presence of fish-eating birds on shrimp farms was a significant association with AHPND (odds ratio=8, p=0.049). Conclusion: To reduce the effect of AHPND, farmers should apply effective methods to manage wild animals such as using a grid or net to cover the pond, combined with improved biosecurity.

Andrographolide promote the growth and immunity of Litopenaeus vannamei, and protects shrimps against Vibrio alginolyticus by regulating inflammation and apoptosis via a ROS-JNK dependent pathway

“…According to an increasing number of studies, V. alginolyticus is not only limited to infecting marine species such as oysters (1), groupers (2), and shrimps (3), but also gradually become an opportunistic pathogen of human infection (4)(5)(6). Over the last decade, aquatic animal diseases caused by V. alginolyticus occur frequently with the expansion of aquaculture scale and the deterioration of water environment, leading to enormous economic losses to the aquaculture industry (7)(8)(9)(10). In recent years, research on the pathogenic mechanisms of V. alginolyticus has gained momentum.…”

Exploring beyond farm management : opportunities to reduce information asymmetry and systemic risks in Vietnamese aquaculture

“…and from 80% to 100%, respectively (according to Desrina et al (2022) and OIE ( 2021)), while for AHPND these range from 52% to 87% (Nguyen et al, 2021) and from 40% to100%, respectively (according to Boonyawiwat et al (2018) and OIE ( 2021)). Next, we used individual Google forms to elicit experts' individual assessments of the prevalence and mortality rates for each disease in each cooperation scenario.…”