Song Yang, Lan Xinyi, Liu Lei, Wan Fachun, Shen Weijun, Wang Zuo
College of Animal Science and Technology, Hunan Agricultural University, Changsha, China.
College of Veterinary Medicine, Hunan Agricultural University, Changsha, China.
Front Vet Sci. 2024 Jul 26;11:1371939. doi: 10.3389/fvets.2024.1371939. eCollection 2024.
The motility pattern of the reticulo-rumen is a key factor affecting feed intake, rumen digesta residence time, and rumen fermentation. However, it is difficult to study reticulo-ruminal motility using general methods owing to the complexity of the reticulo-ruminal structure. Thus, we aimed to develop a technique to demonstrate the reticulo-ruminal motility pattern in static goats. Six Xiangdong black goats (half bucks and half does, body weight 29.5 ± 1.0 kg) were used as model specimens. Reticulo-ruminal motility videos were obtained using medical barium meal imaging technology. Videos were then analyzed using image annotation and the centroid method. The results showed that reticulo-ruminal motility was divided into primary (stages I, II, III, and IV) and secondary contraction, and the movements of ruminal digesta depended on reticulo-ruminal motility. Our results indicated common motility between the ruminal dorsal sac and ruminal dorsal blind sac. We observed that stages I (3.92 vs. 3.21 s) ( < 0.01), II (4.81 vs. 4.23 s) ( < 0.01), and III (5.65 vs. 5.15 s) ( < 0.05); interval (53.79 vs. 50.95 s); secondary contraction time (10.5 vs. 10 s); and were longer, whereas stage IV appeared to be shorter in the bucks than in the does (7.83 vs. 14.67 s) ( < 0.01). The feasibility of using barium meal imaging technology for assessing reticulo-ruminal and digesta motility was verified in our study. We determined the duration of each stage of reticulo-ruminal motility and collected data on the duration and interval of each stage of ruminal motility in goats. This research provides new insights for the study of gastrointestinal motility and lays a solid foundation for the study of artificial rumen.
瘤网胃的运动模式是影响采食量、瘤胃食糜停留时间和瘤胃发酵的关键因素。然而，由于瘤网胃结构的复杂性，使用常规方法研究瘤网胃运动较为困难。因此，我们旨在开发一种技术来展示静态山羊的瘤网胃运动模式。选用6只湘东黑山羊（公母各半，体重29.5±1.0 kg）作为模型样本。利用医用钡餐成像技术获取瘤网胃运动视频。然后使用图像标注和质心方法对视频进行分析。结果表明，瘤网胃运动分为原发性收缩（I、II、III和IV期）和继发性收缩，瘤胃食糜的运动依赖于瘤网胃运动。我们的结果表明瘤胃背囊和瘤胃背盲囊之间存在共同运动。我们观察到，公羊的I期（3.92对3.21秒）（<0.01）、II期（4.81对4.23秒）（<0.01）和III期（5.65对5.15秒）（<0.05）；间隔期（53.79对50.95秒）；继发性收缩时间（10.5对10秒）更长，而IV期在公羊中似乎比母羊短（7.83对14.67秒）（<0.01）。本研究验证了使用钡餐成像技术评估瘤网胃和食糜运动的可行性。我们确定了瘤网胃运动各阶段的持续时间，并收集了山羊瘤胃运动各阶段的持续时间和间隔数据。本研究为胃肠运动研究提供了新的见解，为人工瘤胃研究奠定了坚实基础。
