First report of acute reproductive disorder due to Mycoplasma suis in hyperprolific sows
Volume 17, Issue 2, February 2026, Pages 135-139
Dung Thi Khanh Le, Tram Ngoc Thi Ngo, Dung Thi Thuy Do, Nam Minh Nguyen, Duy Tien Do
Abstract Reproductive failure is the major problem in modern pig production, significantly affecting economic productivity. This study investigated factors associated with reproductive failure in the hyper prolific pig farms, focusing on abortion, mummification, stillbirth and sudden increased sow death. Seven individual sows with reproductive failure clinical signs were surveyed to evaluate the infection rate with related pathogens. Results showed the highest frequency of Mycoplasma suis infections with reproductive problems along with blood samples being 100% positive, fetal mummification rate of 33.33% and stillbirth rate of 25.00%. Additionally, 28.57% of the total blood samples exhibited porcine circovirus type 3 infection, while other pathogens were not detected. The percentage of concurrent infections with M. suis and porcine circovirus type 3 in reproductive sow was 28.57%. The partial 16S rRNA Porcine Haemoplasma is a trivial name for haemotropic Mycoplasma spp., which can attach to the surface of red blood cells leading to deformity and anaemia in a wide range of mammalian animals including pigs. Haemoplasma sequences in this study was absolutely clustered into Haemominutum group. This study demonstrated the first case of acute reproductive disorder due to M. suis reported in imported hyper prolific sows.