鸡不存在胃分泌的头期。
Lack of a cephalic phase of gastric secretion in chickens.
作者信息
Duke G E, Bedbury H P
出版信息
Poult Sci. 1985 Mar;64(3):575-8. doi: 10.3382/ps.0640575.
Cannulae were surgically implanted in the caudoventral margin of the glandular stomach of 10 Single Comb White Leghorn hens to permit collection of gastric secretions. A total of 44 experiments was performed. The hens were fasted for 24 hr after which secretions were collected separately for three 20-min periods with 1) no food in sight, 2) food in sight but unavailable, and 3) food available. The volume, pH, and pepsin content of the secretions were not significantly changed between Periods 1 and 2, indicating no cephalic phase of gastric secretion. Secretory activity was significantly different between Periods 2 and 3, demonstrating the presence of a gastric phase of gastric secretion.
通过手术将套管植入10只单冠白来航母鸡腺胃的尾腹缘，以便收集胃液。共进行了44次实验。母鸡禁食24小时后，分别在三个20分钟时间段收集胃液，条件如下：1）看不到食物；2）能看到食物但无法获取；3）可获取食物。第1阶段和第2阶段之间，胃液的体积、pH值和胃蛋白酶含量没有显著变化，表明不存在胃分泌的头期。第2阶段和第3阶段之间的分泌活动有显著差异，表明存在胃分泌的胃期。
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