Poulsen J S, Ozkan K, Andersen J O
Acta Vet Scand. 1988;29(1):129-33. doi: 10.1186/BF03548402.
Samples of ruminal fluid collected with the COMET naso-ruminal sampler and by two other methods through fistula were subjected to comparative clinical chemical examination. It was found that the mean values of pH and buffer capacity were nearly identical for all three methods. The greatest variation between the methods were found for reduction time of methylene blue owing to different dry matter contents in the samples. The VFA contents were nearly identical in all three samples. In conclusion, it was found that it is possible to obtain ruminal samples that are representative of the biochemical status in the rumen by means of the COMET naso-ruminal sampler in non-fistulated cows.
用COMET鼻瘤胃采样器以及通过瘘管采用其他两种方法采集的瘤胃液样本进行了比较临床化学检查。结果发现，三种方法的pH值和缓冲能力平均值几乎相同。由于样本中干物质含量不同，三种方法之间亚甲基蓝还原时间的差异最大。所有三个样本中的挥发性脂肪酸（VFA）含量几乎相同。总之，研究发现通过COMET鼻瘤胃采样器可以在非瘘管牛身上获取代表瘤胃生化状态的瘤胃样本。
