Wood A K
Am J Vet Res. 1982 Jan;43(1):61-6.
The passage of a single oral dose of barium sulfate through the stomach and small intestine of 18 pigs (1 to 21 days of age) was studied. In a series of lateral radiographs, the stomach had a smooth oval appearance, filling the cranial third of the abdomen. Barium mixed rapidly with the milk clot in the stomach immediately after swallowing and became distributed throughout the stomach (except for the diverticulum, which contained gas). Barium passed into the duodenum by postdosing minute (PDM) 3 in 1 pig, and by PDM 10 in 11 pigs. In 32 experiments in 17 pigs, gastric emptying of barium was complete by PDM 100 in 91% of the experiments, whether or not the pigs had suckled the sow. Suckling also did not influence the time taken for barium to reach the large intestine (by PDM 360 in 12 pigs). When a hyperosmolar contrast medium (diatrizoate meglumine) was given instead of barium sulfate to 10 pigs, gastric emptying was delayed (it was not complete by up to PDM 218), but the small intestine filled rapidly (the contrast medium reached the cecum by PDM 218).
研究了18头仔猪（1至21日龄）口服单剂量硫酸钡后在胃和小肠中的通过情况。在一系列侧位X线片中，胃呈光滑的椭圆形，占据腹部颅侧三分之一。吞咽后，钡剂立即与胃内的乳凝块迅速混合，并分布于整个胃内（憩室内含气体除外）。1头仔猪在给药后3分钟（PDM 3）钡剂进入十二指肠，11头仔猪在PDM 10时进入。在对17头仔猪进行的32次实验中，无论仔猪是否吸吮母猪乳汁，91%的实验中钡剂在PDM 100时胃排空完成。吸吮也不影响钡剂到达大肠的时间（12头仔猪在PDM 360时到达）。当给10头仔猪注射高渗造影剂（泛影葡胺）而非硫酸钡时，胃排空延迟（直到PDM 218时仍未完成），但小肠迅速充盈（造影剂在PDM 218时到达盲肠）。
