Bottinelli Marco, Stefani Elisabetta, Matucci Andrea, Dal Prà Mauro, Capello Katia, Zotti Alessandro, Catania Salvatore
Mycoplasma Unit, Istituto Zooprofilattico Sperimentale delle Venezie, SCT1, Verona, VR, Italy.
Istituto Zooprofilattico Sperimentale delle Venezie, SCS4 Epidemiologia analitica e biostatistica, Legnaro, Italy.
Avian Pathol. 2021 May 10:1-8. doi: 10.1080/03079457.2021.1914816.
, a pathogen affecting the turkey industry, is commonly associated with decreased hatchability and leg abnormalities in young progeny. This was in the spotlight more in the past than today since its prevalence has been decreasing over time. Reports of in turkeys showing reduced growth performances, leg problems and skeletal abnormalities are scarce although there is no report whether this pathogen has been completely eradicated in commercial turkeys. Additionally, there are no comprehensive epidemiological data available on prevalence in any country. Therefore, we carried out a retrospective study to evaluate the prevalence of the infection and any correlation between necropsy findings and presence in Italian turkeys between 2011 and 2012. Necropsy was performed on 101 dead turkey submissions presented for diagnostic purposes. Fifty-six submissions (55.4%) tested positive for , most of which (69.6%) were between 4 and 7 weeks of age. Skeletal abnormalities were observed in 36 cases (35.6%). The logistic regression analysis revealed that the probability of finding a -positive submission was four times higher if the animals showed skeletal abnormalities (OR = 4.48, IC 95%: 1.66-12.15). This is the first retrospective, cross-sectional study on field outbreaks in commercial turkeys. These results suggest that should be considered as a differential diagnosis when skeletal abnormalities are observed. RESEARCH HIGHLIGHTS was found in more than half of the turkey groups analysed. was likely to be detected if skeletal abnormalities were present in the studied turkeys.
一种影响火鸡产业的病原体，通常与幼雏孵化率降低和腿部畸形有关。这种病原体在过去比现在更受关注，因为其流行率一直在下降。关于火鸡出现生长性能下降、腿部问题和骨骼异常的报道很少，尽管没有报告这种病原体在商业火鸡中是否已被完全根除。此外，没有任何国家关于该病原体流行率的全面流行病学数据。因此，我们进行了一项回顾性研究，以评估2011年至2012年期间意大利火鸡中该感染的流行率以及尸检结果与该病原体存在之间的任何相关性。对101份用于诊断目的的死亡火鸡样本进行了尸检。56份样本（55.4%）检测出该病原体呈阳性，其中大多数（69.6%）在4至7周龄之间。36例（35.6%）观察到骨骼异常。逻辑回归分析显示，如果动物出现骨骼异常，发现该病原体阳性样本的概率高出四倍（比值比=4.48，95%置信区间：1.66-12.15）。这是第一项关于商业火鸡中该病原体田间暴发的回顾性横断面研究。这些结果表明，当观察到骨骼异常时，应将该病原体视为鉴别诊断因素。研究亮点：在所分析的一半以上火鸡群体中发现了该病原体。如果所研究的火鸡存在骨骼异常，则很可能检测到该病原体。
