【摘要】 试验选用农大3号35日龄公鸡144只,随机分成4组,常温对照组在22℃环境下饲养,高温对照组和2个高温用药组在26-39℃环境下饲养。各组分别于实验第1、4、8、10天捕杀5只,取十二指肠、空肠、回肠、盲肠各1cm,PAS染色,光学显微镜检测肠绒毛杯状细胞的数量。结果表明,与常温对照组相比,高温对照组鸡各肠段黏膜杯状细胞数量增加,随着热应激时间的延长,高温对照组杯状细胞数量呈下降趋势;方1和方2能在高温状态下促进鸡肠道杯状细胞数量增加,且方1的效果优于方2。更多还原

【Abstract】 144 35-day-old Nongda No.3 chickens were randomly divided into normal temperature control group (NTCG, which was raised in 22℃), high temperature control group (HTCG) and 2 high temperature treatment group (which were raised in 26-39℃). 5 chickens from each group were killed on 1, 4, 8 and 10 day, respectively. Specimens of duodenum, jejunum, ileum and cecum were obtained for PAS staining. Then the counts of intestinal mucosa goblet cells were determined by optical microscopy. Results showed that the number of intestinal mucosa goblet cells in HTCG, which was higher than that of the NTCG, tended to decrease with the maintenance of heat stress; both preparations 1 and 2 could increase the counts of intestinal mucosa goblet cells, moreover the former had better effect than the latter.更多还原