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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Department of General and Clinical Pathology, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria.

Br Poult Sci. 2009 May;50(3):284-90. doi: 10.1080/00071660902942783.

The aim was to determine the prevalence of femoral head necrosis (FHN) as a cause of lameness in broilers, and to increase knowledge of its morphological features and aetiology. The studies were carried out in two farms (A and B) in Bulgaria, on 650,000 chickens from 38 flocks. 2. Lameness in broilers varied from 3-4% up to 15% for both farms. In affected flocks, mortality due to lameness ranged between 5-6% and 10%. 3. We documented lesions in 520 broilers with signs of lameness. Samples for histopathological examination were obtained from the femur--135 from farm A and 120 from farm B. The samples originated from different batches of broilers, during different seasons of the year, and from chickens originating from parent flocks of different ages. 4. E. coli was isolated in more than 90% of the bacteriologically tested samples with FHN associated with osteomyelitis. Our large-scale field tests showed that FHN was the commonest cause of lameness in broilers.

目的是确定股骨头坏死（FHN）作为肉鸡跛行原因的患病率，并增加对其形态特征和病因的了解。研究在保加利亚的两个农场（A和B）对来自38个鸡群的650,000只鸡进行。2. 两个农场肉鸡的跛行率从3 - 4%到15%不等。在受影响的鸡群中，因跛行导致的死亡率在5 - 6%到10%之间。3. 我们记录了520只出现跛行症状的肉鸡的病变情况。用于组织病理学检查的样本取自股骨——A农场135份，B农场120份。这些样本来自不同批次的肉鸡、一年中的不同季节以及不同年龄亲代鸡群的子代鸡。4. 在超过90%与骨髓炎相关的FHN细菌学检测样本中分离出大肠杆菌。我们的大规模现场试验表明，FHN是肉鸡跛行最常见的原因。

Department of General and Clinical Pathology, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria.

Br Poult Sci. 2009 May;50(3):284-90. doi: 10.1080/00071660902942783.

The aim was to determine the prevalence of femoral head necrosis (FHN) as a cause of lameness in broilers, and to increase knowledge of its morphological features and aetiology. The studies were carried out in two farms (A and B) in Bulgaria, on 650,000 chickens from 38 flocks. 2. Lameness in broilers varied from 3-4% up to 15% for both farms. In affected flocks, mortality due to lameness ranged between 5-6% and 10%. 3. We documented lesions in 520 broilers with signs of lameness. Samples for histopathological examination were obtained from the femur--135 from farm A and 120 from farm B. The samples originated from different batches of broilers, during different seasons of the year, and from chickens originating from parent flocks of different ages. 4. E. coli was isolated in more than 90% of the bacteriologically tested samples with FHN associated with osteomyelitis. Our large-scale field tests showed that FHN was the commonest cause of lameness in broilers.

目的是确定股骨头坏死（FHN）作为肉鸡跛行原因的患病率，并增加对其形态特征和病因的了解。研究在保加利亚的两个农场（A和B）对来自38个鸡群的650,000只鸡进行。2. 两个农场肉鸡的跛行率从3 - 4%到15%不等。在受影响的鸡群中，因跛行导致的死亡率在5 - 6%到10%之间。3. 我们记录了520只出现跛行症状的肉鸡的病变情况。用于组织病理学检查的样本取自股骨——A农场135份，B农场120份。这些样本来自不同批次的肉鸡、一年中的不同季节以及不同年龄亲代鸡群的子代鸡。4. 在超过90%与骨髓炎相关的FHN细菌学检测样本中分离出大肠杆菌。我们的大规模现场试验表明，FHN是肉鸡跛行最常见的原因。