PDF(Pubmed)
Abstract：
Zoonotic metacestodes present a significant threat to both veterinary and public health. Specifically, the prevalence of metacestodes is often concentrated among consumers of raw meat and underdeveloped countries. The objective of this study was to estimate the prevalence of condemned red offal and examine the gross and histopathology features of zoonotic metacestodes. A cross-sectional study was conducted from November 2022 to July 2023 at the Bahir Dar municipal abattoir. A simple random sampling method employed in the abattoir survey to investigate pathological changes of offal and its rate of condemnation. Following a gross inspection of the red offal, representative tissue samples collected and preserved in 10% neutral buffered formalin. Subsequently, the size and number of cysts determined, and their viability and fertility evaluated. Hematoxylin and eosin staining utilized to analyze various lesions with microscope. A total of 340 cattle examined and 7.5% red offal condemned due to hydatid cysts 4.12% in the lungs, 3% in the liver, 0.6% in the kidneys, and 0.9% in other organs. Red offal condemned due to Cysticercus bovis 0.6% in the liver and 0.3% in the tongue. A statistically significance relationship was found between lung rejection due to hydatidosis (p < 0.05), body condition score, and origin of the animal. Among the detected calcified cysts, 83.34% of C. bovis and 47.62% of hydatid cysts. Histopathological examination revealed hydatid cysts and their oncospheres within the portal circulation, as well as necrotized, calcified daughter cysts observed on Bowman\'s capsule. The alveoli and bronchiole parenchyma compressed with pressure of protoscolices and it infiltrated by eosinophils. The cyst wall is attached to the thick hepatic capsule of the liver, with the hepatic parenchyma displaying islands of irregular hepatocytes. Cysticercus bovis detected in the deteriorated and necrotized muscle bundles, along with granulomatous lesions characterized by infiltration of mononuclear cells. Gross and histological examinations is invaluable tool for diagnosing hydatidosis and cysticercosis, providing well-organized baseline data to enhance our understanding the burden of zoonotic metacestodes.
摘要：
人畜共患病的恒动物对兽医和公共卫生都构成了重大威胁。具体来说,长牙的流行通常集中在生肉和不发达国家的消费者中。这项研究的目的是估计被谴责的红色内脏的患病率，并检查人畜共患的体部和组织病理学特征。从2022年11月至2023年7月，在巴希尔达尔市屠宰场进行了一项横断面研究。屠宰场调查中采用的一种简单随机抽样方法，用于调查内脏的病理变化及其谴责率。在对红内脏进行粗略检查后，代表性组织样本收集并保存在10%中性缓冲福尔马林中。随后，确定囊肿的大小和数量，并评估了它们的生存能力和生育能力。苏木精和伊红染色用于用显微镜分析各种病变。共检查340头牛,因肺部有4.12%的包虫囊肿而被定罪的红内脏为7.5%,3%在肝脏中，肾脏中0.6%，其他器官为0.9%。由于牛囊尾蚴在肝脏中占0.6％，在舌头中占0.3％，因此红内脏受到谴责。发现由于包虫病引起的肺排斥反应之间存在统计学上的显着关系（p<0.05），身体状况评分,和动物的起源。在检测到的钙化囊肿中，83.34%的牛梭菌和47.62%的包虫囊肿。组织病理学检查显示包虫囊肿及其在门静脉循环内的肿瘤球，以及坏死，在Bowman囊上观察到钙化的女儿囊肿。肺泡和细支气管实质在原初囊的压力下压缩，并被嗜酸性粒细胞浸润。囊肿壁附着在肝脏厚的肝包膜上，肝实质显示不规则肝细胞岛。在恶化和坏死的肌肉束中检测到牛囊尾蚴，伴随以单核细胞浸润为特征的肉芽肿性病变。大体和组织学检查是诊断包虫病和囊虫病的宝贵工具，提供组织良好的基线数据，以增强我们对人畜共患的负担的理解。
