六品种褐壳蛋鸡耐热力测定研究(Ⅱ)

The Study of Six Brown Laying Growers on the Thermotolerance(Ⅱ)

以优选耐热蛋鸡良种为目的 ,选用伊莉莎、罗曼、海兰、海赛克斯、尼克、宝万斯等 6品种 3 0周龄商品代褐壳蛋鸡各 48只 ,置环控室内 ,试验控温方式为“2 2℃ 7d～ 3 0℃ 7d～ 3 5℃ 7d～ 2 1 .3℃ 2 2 h”。于 2 2℃1 66h、3 0℃ 1 66h、3 5℃ 1 66h、2 1 .3℃ 2 2 h测定血浆 GPT、GOT、AKP、CK、LDH,血液 Zn、Cr、Se、I、Mn的变化。结果表明 :1较长高温对血浆 GOT、GPT、AKP、CK影响显著 ,2 1 .3℃ 2 2 h尚未恢复正常。其中海赛克斯、宝万斯受影响较大 ,海兰、伊莉莎较小 ;2 3 5℃ 1 66h显著降低了 6品种蛋鸡血液 Zn、Cr、Se、Mn的水平 ,其中 Cr、Se降低最显著。 2 1 .3℃ 2 2 h均未恢复正常 ,尤其是 Cr。 3 HSST与其血液 CK、LOH、AKP、Cr、Se。

weed old six brown laying growers were each randonly put into the environment control house to study effect on blood enzymes,mineral elements of six growers in '22℃7 d 30℃7 d 35℃7 d 21.3℃22 h CT'.The results showed:① There were significant change on Plasma GOT,GPT,AKP,CK in 30℃166 h,35℃166 h CT,in which the more effects were discovered on that of Hisex,BWS than Lohmann,Eleza′s,and the most indexs were hardly returning to normal in 21.3℃22 h after heat stress.② 35℃166 h high temperature was marked decrease of blood Zn,Cr,Se,Mn on six growers,in which the most decrease of blood Cr,and that could not returned to normal on 21.3℃ after heat stress.③ Significant relation of HSST with blood CK,LDH,AKP,Cr,Se,Zn was obtained on six growers in 30℃166 h,or 35℃166 h.