Madison J B, Merritt A M, Rice B, Donovan G A, Lester G D, Tran T
Department of Large Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville 32610-0136.
Am J Vet Res. 1993 May;54(5):793-7.
Effects of a change from a diet composed primarily of forage to a diet composed primarily of concentrate on abomasal antral and duodenal motility were assessed in 5 lactating Holstein cows. Antroduodenal motility was measured by use of 8 silver electrodes sutured to the abomasum and duodenum, and abomasal emptying was assessed by continuous measurement of intraduodenal pH. Both diets were fed to achieve a daily dry matter intake of 2.7 kg/100 kg of body weight. The abrupt change in diet did not alter antroduodenal myoelectric activity or abomasal emptying. Initiation of phase III of the migrating myoelectric complex in the proximal portion of the duodenum corresponded with a decrease in abomasal antral spiking activity and an increase in intraduodenal pH. Results suggest that a high concentrate diet alone does not adversely affect antroduodenal motility in adult dairy cattle.
在5头泌乳的荷斯坦奶牛中评估了从主要由粗饲料组成的日粮转变为主要由精饲料组成的日粮对皱胃窦和十二指肠运动的影响。通过将8个银电极缝合到皱胃和十二指肠来测量胃十二指肠运动，并通过连续测量十二指肠内pH值来评估皱胃排空。两种日粮的饲喂量均达到每日干物质摄入量为2.7 kg/100 kg体重。日粮的突然改变并未改变胃十二指肠肌电活动或皱胃排空。十二指肠近端移行性肌电复合波III期的起始与皱胃窦尖峰活动的减少和十二指肠内pH值的增加相对应。结果表明，仅高精饲料日粮不会对成年奶牛的胃十二指肠运动产生不利影响。
