摘要
本试验采用高能日粮饲养 1日龄爱拨易加父母代公雏 ,2 1日龄开始分群 ,2 0 0只鸡随机分成试验组和对照组 ,试验组用低温诱发肉鸡腹水症 ,分别用血细胞压积、心电图的导联变化、腹水心脏指数检测肉鸡腹水症。结果如下 :低温组累积右心肥大率和腹水症发生率分别为 2 6 .14 % ,14 .0 0 % ,极显著地高于对照组(5.0 0 % ,3.0 0 % )。低温处理 2周后 (35日龄 )红细胞数量、血细胞压积显著升高。腹水心脏指数在低温 3周后出现极显著升高。低温处理后心电图 导联 S波、a VF导联 S波与对照组相比差异极显著。表明低温处理后肉鸡红细胞数目增多、血细胞压积升高 ,导致血粘度升高 ,肺血液循环阻力增加 。
Two hundred Abroe Acoe(AA) breed male broilers were fed on high dietary levels of pellet diets from day 1 after hatching. On day 21,the broilers were randomly divided into two groups. The experimental group was exposed to low ambient temperature in order to induce ascites. Ascites was assessed by pack cell volume(PCV),electrocardiograph amplitude as well as ascites heart index(AHI). The results were shown as follows: The experimental group showed more significantly right heart hypertrophy(26.14%) and ascites (14.00%) than that of control group which showed right ventricular hypertrophy (5.00%) and ascites (3.00%). Hematological variables(RBC,PCV,Hb) in low temperature group were significantly increased compared with control group. The S wave amplitudes in lead Ⅱ and aVF had attained a more negative amplitude since the broilers were suffered from cold stress. On day 42, the AHI was higher in the treat group than in the control group. These indicate that the higher RBC and PCV triggered by cold stress result in blood viscosity elevation and increase the right heart hypertrophy, which related to right heart failure and ascites development.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2000年第3期111-116,共6页
Journal of China Agricultural University
基金
农业部九五攻关专题资助项目 !95牧 - 0 2 - 0 3- 11
关键词
肉鸡腹水症
低温处理
发病机理
boilers ascites
mechanics
low temperature
hematological variables
