Madison J B, Troutt H F
Department of Agricultural and Urban Practice, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg 24061.
Res Vet Sci. 1988 Mar;44(2):264-6.
Abomasal mechanical and myoelectric activity were measured in two adult Holstein cows. Hypocalcaemia was induced using a constant infusion of disodium EDTA and serum total and diffusible calcium concentrations were measured. Abomasal motility remained normal in the face of declining calcium concentrations until a threshold value was reached (1.2 +/- 0.2 mmol litre-1) below which all mechanical and electrical activity was absent. A similar threshold effect was observed when calcium concentrations were allowed to rise. These data do not support hypocalcaemia as being a clinically important cause of abomasal atony.
在两头成年荷斯坦奶牛身上测量了皱胃的机械和肌电活动。通过持续输注乙二胺四乙酸二钠诱导低钙血症，并测量血清总钙和可扩散钙浓度。尽管钙浓度下降，但皱胃运动在达到阈值（1.2±0.2毫摩尔/升）之前仍保持正常，低于该阈值时所有机械和电活动均消失。当钙浓度升高时也观察到类似的阈值效应。这些数据不支持低钙血症是皱胃弛缓的临床重要原因。
