In experiment 3,three levels of glucose and casein mixture(250+200,250+300 and 250+400g/day)were continuously infused into the abomasum.

• 试验三 :真胃每天持续灌注葡萄糖和酪蛋白的混合物分别为250g±200g ,250g +300g以及250g +400g。