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硼中毒对固始鸡生长性能及胸腺发育的影响

DOI: 10.7685/j.issn.1000-2030.2005.01.031, PP. 135-138

Keywords: ,中毒,固始鸡,胸腺,发育,组织结构

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Abstract:

120只1日龄固始鸡随机分为2组,试验组在饮水中添加400mg?L-1硼。每周每组取鸡10只,颈静脉放血致死,取胸腺,称重,制作石蜡切片,光镜观察。实验结果表明(1)试验组胸腺重及胸腺/体重比显著低于同周龄对照组(P<005),3、5、6周龄胸腺重及1、2、3、5周龄胸腺/体重比极显著低于对照组(P<001);(2)试验组1、2周龄鸡胸腺明显萎缩,间质显著增多,实质急剧退化,胸腺细胞急剧减少或空竭,胸腺小体增多、增大;(3)3周龄起,试验组大多鸡胸腺发育呈恢复状态,6周龄,胸腺组织结构基本恢复。以上结果提示,添加400mg?L-1硼的饮水对固始鸡的生长与胸腺的发育,尤其是胸腺早期发育,有明显抑制和毒性作用。

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