Any lactating female is under stress. Particularly after parturition when she comes into milk and her energy requirements and intake increase dramatically. Western Yeast Culture fed 7-10 days prior to parturition will make this adjustment period a relative breeze. The metabolic intermediates already in our yeast culture and produced by our mature, live yeast cells will help maintain the fiber digesting bacteria (only a live yeast can do this). Cows and nannies fed yeast, tend to have greater numbers of bacteria resulting in greater milk production, longer peak production, improved butterfat, improved feed efficiency, less weight loss and improved longevity. Western Yeast Culture works equally well top dressed or mixed with the total food ration.