如何配置asp.net mvc站点以包含特定发布模式的脚本

We have setup three environments DEV, UAT and Live for our website built in Asp.net MVC. We need to add the google analytics script code (as below) on the live website only. How can we possibly configure this or any script so that when we publish the site in the release mode or another mode only then this script is added before the ending body tag of the _Layout view? thanksWe have setup three environments DEV, UAT and L