Study on Induced Lactation of Dairy Cows Using main Inducing-Lactation Injections with Oxytocin as Binder

non-milking black and White cows which had failed to conceive for12to36months were divided into4groups mainly on the basis of provious year's milk yield approximately.The animals in each group were inhduced to lac-tate by using different main inducing-lactation injections with oxytocin as binder.The rerults show that13cows of all were successfully induced to lactate with the successful rate of100%.The total and daily milk yiled in each treatment group using oxytocin were all more than that of the yield in the centrol(P0.05).The inducing-lactation injections thera-py period was shortened from the traditional7d to5dby this study but didn't reduce the milk yield(P0.05).