Insulin resistance in transition period in dairy cattle

The study of dairy cattle nutrition in transition period has attracted many attention in recent years and the results of these studies shows that optimal transition from this period can result in health and longevity of dairy cattle in herd. Insulin resistance in the late pregnancy is an important compatibility to save glucose for uterus and mammary gland and continue to early stages after parturition and over a third of the pregnancy take place as a decrease in insulin sensitivity that is progressive and reversible. Insulin has many metabolic roles in maintaining nutrients in the body and glucose tolerance test is the usual method for measuring insulin resistance in the body. Factors such as pregnancy progress, fatness, type of cereal used in the ration, Synchronization of energy and ammonia supply to rumen microorganisms and ration supplying by chromium element are of effective ways in adjustment of insulin resistance.