缺锌症猪血液学及血液生化改变的观察

OBSERVATIONS ON THE CHANGES OF HEMATOLOGY AND BLOOD BIOCHEMISTRY IN PIG'S ZINC DEFICIENCY

２４头５０～５７日龄杜长本杂交断乳仔猪分为３组，用Ｃａ∶Ｚｎ为６０∶１、３３０∶１和５１６∶１的三种日粮分别饲喂３组仔猪１２０天。对各组猪的临床表现、部份血液学及血液生化参数的变化进行了动态观察。结果表明：饲喂Ｃａ∶Ｚｎ为６０∶１日粮猪无异常表现，发育健康；用Ｃａ∶Ｚｎ为３３Ｏ∶１和５１６∶１的日粮可成功地复制猪缺锌症；红细胞数、血红蛋白、红细胞压积、血清总蛋白各组间差异不显著（Ｐ＞０．０５）；各组白细胞数和血清碱性磷酸酶含量均发生下降，但以日粮Ｃａ∶Ｚｎ为５１６∶１组下降最为明显，且与其它两组有显著差异（Ｐ＜０．０５）。提示白细胞数和血清碱性磷酸酶活性的下降对猪缺锌症的诊断具有一定的临床意义。

Twenty-four piglets aged 50～57 days and weaned were randomly alloted to 3 groups.Each group was fed,with ratio of Ca and Zn of 60:1 or 330:1 or 516:1 and the duration of the experiment of 120 days.The dynamic fluctuation of clinical symptoms,hematology and blood biochemistry were observed and analysed.The results obtained were as follows:The piglets fed the ration with ratio of Ca:Zn of 60:1 grew well and the piglets in the other two groups suffered from zinc deficiency;RBC、Hb、PCV、serum TP were not significant 9 different between all 3 groups(p>0.05 )and WBC and serum AKP decreased in all 3 groups.But WBC and serum AKP of the piglets fed the ration with ratio of Ca:Zn of 516 :1 were lower than that of the piglets in the other two groups significantly(P<0.05).The results show that the decreases of WBC and serum AKP can be used to diagnose pig's zinc deficiency in clinic