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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Effect of Embryo Thermal Stimulation on the Serum Levels of Immunoglobulins and Corticosterone, and Organ Histopathology of 1 day-old Broilers
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Effect of Embryo Thermal Stimulation on the Serum Levels of Immunoglobulins and Corticosterone, and Organ Histopathology of 1 day-old Broilers

机译：胚胎热刺激对免疫球蛋白血清水平的影响，以及1天老肉鸡的器官组织病理学

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摘要

ABSTRACT Embryo thermal stimulation has been studied as a means to promote epigenetic changes and to improve broiler health and performance. This study aimed at evaluating immunoglobulin (IgM, IgG, and IgA) titers, serum corticosterone levels, and organ integrity of day-old male Cobb (r) and Ross (r) broilers. Embryos were submitted to hot and cold stimuli (thermal stimulation) on days 14-18 of incubation. The thermal manipulation treatments did not affect immunoglobulin titers of 1 day-old Cobb (r) or Ross (r) chicks, and caused severe bursal lesions (scores 3 and 4) in both strains. However, serum corticosterone levels of Cobb (r) chicks were higher when embryos were submitted to hot stimulus (+1.39???oC) compared with cold stimulus (+36 ???oC). Serum corticosterone levels of Ross (r) chicks were not affected by embryo temperature manipulation. The only effect of broiler breeder age was observed on IgM titers of Cobb (r) chicks, which were higher in chicks from 33-wk-old breeders. Further studies are needed to detect the optimal period of embryo thermal stimulation.
机译：摘要研究了胚胎热刺激作为促进表观遗传变化的手段，提高肉鸡健康和性能。该研究旨在评估免疫球蛋白（IgM，IgG和IgA）滴度，血清皮质酮水平和当天雄性Cobb（R）和罗斯（R）肉鸡的器官完整性。在孵育时的第14-18天，将胚胎提交至冷热刺激（热刺激）。热操作处理不会影响1天龄COBB（R）或罗斯（R）雏鸡的免疫球蛋白滴度，并在两种菌株中引起严重的Bursal病变（分数3和4）。然而，当与冷刺激相比，当胚胎（+ 36℃）相比，胚胎（r）雏鸡的血清皮质酮水平较高（+1.39℃）。罗斯（R）雏鸡的血清皮质酮水平不受胚胎温度操作的影响。在Cobb（R）雏鸡的IgM滴度上观察到肉鸡饲养员的唯一效果，从33-WK旧育种者中雏鸡较高。需要进一步的研究来检测胚胎热刺激的最佳时间。

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