雏鸡硒—维生素E缺乏症的试验研究——I、病区饲料的发病试验

本综合症是世界性多种畜禽的共患病,在黑龙江省也广泛发生。我们以病区饲料(缺乏硒及维E)为基础,补加一些不同营养物质,对肉用种雏鸡进行分组对比喂饲试验。两周后一、三、五组试验雏鸡全部发病,死亡率达76—80％;而二、四、六组仅有部分或个别的发病与死亡。试验雏鸡所呈现的临床症状、病理变化以及发病规律等,均与自然发生的典型的硒——维E缺乏症基本一致。证明动物模型复制的成功。根据病区饲料组与半合成饲料组(缺硒及维E)试验结果的一致性以及参照病区饲料加硒及维E组具有明显的保护作用,揭示出病区饲料中存在的主要致病因子是硒及维生素E的缺乏或不足。

THE EFFECTS OF SELENIUM DEFICIENCY ON BABY CHICKS Ⅰ. SYNDROME ON DIETS FROM DEFICIENT REGION

Selenium and Vitamin E deficiency, a syndrome world wide for many farm livestock, is also prevalent in Heilongjiang Province. No assay had been done on synthetic approach to this disease. To a basic diet (1) from Se deficient area Se (2), Vit. E (3), Se+E (4) were added. As semisynthetic diet mainly of starch and yeast (5) and a stock diet (6) were used as negative and positive controls. During an experimen peri of 10 weeks, all chicks from Lots 1, 3, and 5 were afflicte wich morta lities averaging 76-80％. Disease manifestation and deaths occurr sporadically in Lots 2 and 4. Bvisual symptoms, pathological changes and etiological patterns confirmed in general the natural se-Edeficient syndrome complex that occurred on farms. selenium and/or V-E supplementation to the deficient basic diet proved efficacious, thus confirmed that Se and/or V E deficiency were the causative factors.