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dan ji chan dan yi chang de fang zhi dui ce
Author(s): 
Pages: 33
Year: Issue:  5
Journal: Liaoning Journal of Animal Husbandry and Veterinar

Abstract: <正> 近儿年来,蛋鸡病的发病症状又出现了一些新的特点,整群鸡缺乏典型的临床症状和病理变化,对临床珍断和治疗造成了一定的困难,直接影响养鸡效益。
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