在尼尼微省不同品系的肉鸡中通过遗传免疫力抵抗新城疫的能力。
The ability to resist Newcastle disease through inherited immunity in different strains of broilers in Nineveh governorate.
机构信息
Department of Veterinary Public Health, College of Veterinary Medicine, University of Mosul, Mosul, Iraq.
出版信息
Open Vet J. 2022 Nov-Dec;12(6):936-943. doi: 10.5455/OVJ.2022.v12.i6.20. Epub 2022 Dec 3.
BACKGROUND
Newcastle disease (ND) is a viral disease that affects numerous bird species and is still present in many places, including Iraq.
AIM
The purpose of this study was to compare maternal derived antibodies against against ND vaccination in 1-day-old imported Cobb 500 and Ross 308 chicks.
METHODS
From April to October 2020, four locations in Mosul governorate were chosen to compute the maternal derived antibodies from 1-day-old broiler chicks. Seven hundred and seven blood samples (451) from imported 28 Ross 308 flocks and 256 from 17 Cobb 500 flocks were obtained and tested for antibody levels using an indirect enzyme-linked immunosorbent assay assay (BioChek commercial kit, UK).
RESULTS
The Cobb 500 broiler chicks outperformed the Ross 308 broiler chicks in that all of the Cobb 500 broiler chicks had maternal antibody titers (100% positivity) versus 97.78% of the Ross 308 chicks, had a mean Maternal antibody titer of 9,871.47 versus 8,647.76, and had a mean CV percentage of 12.41% versus 15.18%, respectively. The mean vaccination index of Cobb 500 broiler chicks was 966.59 versus 821.60 for Ross 308 broiler chicks.
CONCLUSION
Although both broiler types produced chicks with high and uniform maternal antibody titers, Cobb 500 produced chicks with higher protective titers than Ross 308.
背景
新城疫（ND）是一种影响多种鸟类的病毒性疾病，在包括伊拉克在内的许多地方仍然存在。
目的
本研究旨在比较 1 日龄进口科宝 500 和罗斯 308 雏鸡对 ND 疫苗的母源抗体。
方法
2020 年 4 月至 10 月，在摩苏尔省选择了 4 个地点，以计算来自 1 日龄肉鸡雏鸡的母源抗体。从 28 个罗斯 308 鸡群中获得了 707 个血液样本（451 个），从 17 个科宝 500 鸡群中获得了 256 个血液样本，使用间接酶联免疫吸附测定法（BioChek 商业试剂盒，英国）检测抗体水平。
结果
科宝 500 肉鸡雏鸡的表现优于罗斯 308 肉鸡雏鸡，因为所有科宝 500 肉鸡雏鸡的母源抗体滴度均为阳性（100%），而罗斯 308 肉鸡雏鸡的阳性率为 97.78%；科宝 500 肉鸡雏鸡的平均母源抗体滴度为 9871.47，而罗斯 308 肉鸡雏鸡的平均母源抗体滴度为 8647.76；科宝 500 肉鸡雏鸡的平均 CV 百分比为 12.41%，而罗斯 308 肉鸡雏鸡的平均 CV 百分比为 15.18%。科宝 500 肉鸡雏鸡的平均疫苗指数为 966.59，而罗斯 308 肉鸡雏鸡的平均疫苗指数为 821.60。
结论
虽然两种肉鸡类型都产生了具有高且均匀母源抗体滴度的雏鸡，但科宝 500 产生的雏鸡的保护性滴度高于罗斯 308。
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