Wood A K, Kidder D E
Am J Vet Res. 1982 Aug;43(8):1401-8.
The stomachs of 10 Large White x Landrace pigs were examined radiographically from weaning (at 26 to 28 days of age) until 6 or 16 weeks of age. Conventional radiographs were taken and observations were made with a television chain and 35-mm cinecamera linked to an image intensifier. Before radiography, each animal was fed its normal diet that contained a barium sulfate suspension and/or radio-opaque pellets. The basic pattern of motility in the major chamber of the pig's stomach was similar to that described in animals with a simple stomach. Type II peristaltic waves were clearly identified as indentations of the body of the stomach that moved towards the pyloric antrum, which became circular as it filled with digesta. A terminal antral contraction then occurred, the antrum decreased in diameter, and the ingesta and barium sulfate either entered the duodenum or were returned to the body of the stomach. Liquids and finely ground food left the stomach more rapidly than did the radio-opaque pellets that were retained for up to 44 hours. The radio-opaque pellets demonstrated the movement of ingesta within the gastric lumen and showed that ingesta was retropulsed into the body of the stomach by the terminal antral contraction. In 4 pigs, barium and ingesta were present in the 2nd chamber of the stomach, the gastric diverticulum. In 1 pig, a movement of the diverticulum was observed on a single occasion.
对10头大白猪与长白猪杂交的仔猪从断奶（26至28日龄）至6周龄或16周龄进行了胃部X光检查。拍摄了传统X光片，并通过与影像增强器相连的电视系统和35毫米电影摄影机进行观察。在进行X光检查前，每头动物都喂食其正常饮食，其中含有硫酸钡悬浮液和/或不透射线的颗粒。仔猪胃主腔的基本蠕动模式与单胃动物中所描述的相似。II型蠕动波可清晰地识别为胃体上向幽门窦移动的压痕，随着内容物的填充，幽门窦呈圆形。随后发生终末窦收缩，窦直径减小，内容物和硫酸钡要么进入十二指肠，要么返回胃体。液体和磨碎的精细食物比不透射线的颗粒更快地离开胃，这些颗粒可保留长达44小时。不透射线的颗粒显示了胃腔内内容物的移动，并表明终末窦收缩将内容物逆推回胃体。在4头猪中，钡剂和内容物存在于胃的第二腔即胃憩室中。在1头猪中，仅一次观察到憩室的运动。
