Hattab Jasmine, Marruchella Giuseppe, Trachtman Abigail Rose, Gabrielli Luigino, Bernabò Nicola, Mosca Francesco, Tiscar Pietro Giorgio
Department of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy.
Veterinary Practitioner, 63073 Offida, Italy.
Vet Sci. 2022 Dec 12;9(12):691. doi: 10.3390/vetsci9120691.
Polyserositis mostly affects 4−8 weeks old piglets and is usually caused by Glaesserella parasuis, and/or Streptococcus suis, and/or Mycoplasma hyorhinis. The present study aimed to investigate the prevalence and etiology of polyserositis in a tricky pig herd. The concurrent effect of vaccination for Glässer’s disease was also assessed. A total of 46 sows and 387 piglets were herein investigated, subdivided into three groups based on their immune status (i.e., vaccination of sows and piglets). All the piglets found spontaneously dead between the 2nd and 16th week of age were recorded and necropsied. Whenever polyserositis was diagnosed, biomolecular investigations were carried out to detect the above-mentioned pathogens. Mycoplasma hyorhinis was detected most frequently (n = 23), often as the only causative agent (n = 15), whereas S. suis was observed in 8 cases (6 as the only pathogen). Moreover, Glaesserella parasuis was demonstrated in 6 piglets, always in combination with Mycoplasma hyorhinis and/or Streptococcus suis. Vaccination did not significantly affect mortality rates. Overall, our data indicate that polyserositis is likely caused by an intricate puzzle of pathogens, even when dealing with a small herd and during a short time span. That makes it challenging to achieve the correct diagnosis and to properly manage this health issue.
多发性浆膜炎主要影响4至8周龄的仔猪，通常由副猪嗜血杆菌、和/或猪链球菌、和/或猪鼻支原体引起。本研究旨在调查一个棘手猪群中多发性浆膜炎的患病率和病因。还评估了针对格氏病疫苗接种的协同效应。本研究共调查了46头母猪和387头仔猪，根据其免疫状态（即母猪和仔猪的疫苗接种情况）分为三组。记录所有在2至16周龄之间自然死亡的仔猪并进行剖检。一旦诊断出多发性浆膜炎，就进行生物分子研究以检测上述病原体。猪鼻支原体检出频率最高（n = 23），通常是唯一的病原体（n = 15），而猪链球菌在8例中被观察到（6例为唯一病原体）。此外，在6头仔猪中发现了副猪嗜血杆菌，总是与猪鼻支原体和/或猪链球菌同时存在。疫苗接种对死亡率没有显著影响。总体而言，我们的数据表明，即使是在处理小型猪群和短时间内，多发性浆膜炎也可能是由复杂的病原体组合引起的。这使得正确诊断和妥善管理这个健康问题具有挑战性。
