1. Steers with rumen and simple duodenal cannulas were allowed to graze pasture or were given diets of dried grass or flaked maize with or without hay. For an experiment a solution or suspension of magnesium chloride, polyethylene glycol (molecular weight 4000) and either 144Ce (as cerous chloride) or chromic oxide was added to the rumen with a morning feed. Conditions in the rumen were sometim...

The use of grazing systems for milk production is widely used globally because it a lower-cost feeding system. However, under tropical conditions, the energy content pastures became limitation to improve animal performance and efficiency while reducing environmental impact. objective our study was evaluate impact supplying different dietary sources lactating dairy cows on recovery human-edible ...