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Effects of early nutrition and sanitary conditions on antibody levels in early and later life of broiler chickens
Developmental & Comparative Immunology ( IF 2.7 ) Pub Date : 2020-12-10 , DOI: 10.1016/j.dci.2020.103954
M S Hollemans 1 , G de Vries Reilingh 2 , S de Vries 3 , H K Parmentier 2 , A Lammers 2
Affiliation  

Immune maturation of broiler chickens may be affected by management, such as early life feeding strategy (early versus delayed nutrition) or by low or high sanitary conditions (LSC versus HSC). We compared systemic maternal (MAb), natural (NAb), natural auto- (NAAb), and antigen specific antibody (SpAb) levels (IgM, IgY) between broilers (n = 48 per treatment) that received early (EN) or delayed nutrition for 72 h (DN) housed in either low (LSC) or high sanitary conditions (HSC) between 7 and 35 d of age. We found minimal interactions between feeding strategy and sanitary conditions. At 7 d of age, broilers receiving EN compared with DN, had elevated levels of IgM binding keyhole limpet hemocyanin (KLH), phosphoryl-conjugated ovalbumin (PC-OVA), and muramyl dipeptide (MDP), whereas effects of feeding strategy diminished at later ages. In LSC compared with HSC broilers, levels of NAb agglutinating RRBC and sheep red blood cells (SRBC) were already elevated from 14 d of age onwards. At 33 d of age, antibody levels (NAb, NAAb, anti-LPS, anti-MDP) were all elevated in LSC, compared with HSC broilers, for both IgM and IgY, but not IgM against KLH. Western blotting revealed different binding patterns of NAAb against chicken liver homogenate, which may indicate that the NAAb repertoire is affected by antigenic pressure. Our data suggest that antibody levels are affected for an important part by environmental conditions (feeding strategy and sanitary conditions), but minimally by their interaction. However, it remains to be further studied whether the enhanced levels of antibodies as initiated by EN and LSC contribute to enhanced resistance to infectious diseases.



中文翻译:

早期营养和卫生条件对肉鸡早期和后期抗体水平的影响

肉鸡的免疫成熟可能受到管理的影响,例如早期喂养策略(早期与延迟营养)或低或高卫生条件(LSC 与 HSC)。我们比较了接受早期 (EN) 或延迟接受的肉鸡(每次治疗 n = 48)之间的全身母体 (MAb)、天然 (NAb)、天然自身 (NAAb) 和抗原特异性抗体 (SpAb) 水平 (IgM、IgY) 7 至 35 日龄在低 (LSC) 或高卫生条件 (HSC) 中饲养 72 小时 (DN) 的营养。我们发现喂养策略和卫生条件之间的相互作用很小。在 7 日龄时,与 DN 相比,接受 EN 的肉鸡的 IgM 结合锁孔血蓝蛋白 (KLH)、磷酸结合卵清蛋白 (PC-OVA) 和胞壁酰二肽 (MDP) 水平升高,而饲喂策略的影响在后世。与 HSC 肉鸡相比,在 LSC 中,凝集 RRBC 和绵羊红细胞 (SRBC) 的 NAb 水平从 14 日龄开始就已经升高。在 33 日龄时,与 HSC 肉鸡相比,LSC 中 IgM 和 IgY 的抗体水平(NAb、NAAb、抗 LPS、抗 MDP)均升高,但针对 KLH 的 IgM 不升高。Western印迹揭示了NAAb与鸡肝匀浆的不同结合模式,这可能表明NAAb库受抗原压力的影响。我们的数据表明,抗体水平在很大程度上受环境条件(喂养策略和卫生条件)的影响,但受它们相互作用的影响最小。然而,由 EN 和 LSC 引发的抗体水平升高是否有助于增强对传染病的抵抗力仍有待进一步研究。从 14 日龄开始,凝集 RRBC 和绵羊红细胞 (SRBC) 的 NAb 水平已经升高。在 33 日龄时,与 HSC 肉鸡相比,LSC 中 IgM 和 IgY 的抗体水平(NAb、NAAb、抗 LPS、抗 MDP)均升高,但针对 KLH 的 IgM 不升高。Western印迹揭示了NAAb与鸡肝匀浆的不同结合模式,这可能表明NAAb库受抗原压力的影响。我们的数据表明,抗体水平在很大程度上受环境条件(喂养策略和卫生条件)的影响,但受它们相互作用的影响最小。然而,由 EN 和 LSC 引发的抗体水平升高是否有助于增强对传染病的抵抗力仍有待进一步研究。从 14 日龄开始,凝集 RRBC 和绵羊红细胞 (SRBC) 的 NAb 水平已经升高。在 33 日龄时,与 HSC 肉鸡相比,LSC 中 IgM 和 IgY 的抗体水平(NAb、NAAb、抗 LPS、抗 MDP)均升高,但针对 KLH 的 IgM 不升高。Western印迹揭示了NAAb与鸡肝匀浆的不同结合模式,这可能表明NAAb库受抗原压力的影响。我们的数据表明,抗体水平在很大程度上受环境条件(喂养策略和卫生条件)的影响,但受它们相互作用的影响最小。然而,由 EN 和 LSC 引发的抗体水平升高是否有助于增强对传染病的抵抗力仍有待进一步研究。

更新日期:2020-12-16
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