METHOD FOR CLOSE ARTERIAL INFUSION OF THE LACTATING MAMMARY-GLAND

A simple method of catheterizing an artery which supplies the ipsilate ral side of the mammary gland of a high-producing dairy cow is describ ed. The preparation allows infusion of the mammary gland with nutrient s or endocrine factors locally, but does not require general anaesthes ia or deep surgical dissection. Following a preliminary experiment inv olving infusion of acetate, the catheters were removed and the cows re turned to the milking herd.