Effect of Self-developed Anionic Salt Diets on the Performance of Prapartum High Yielding Dairy Cows

30 Holstein muhiparous cows,according to paired experimental design,were studied the effect of self-developed anionic salt diets fed during the prapartum(prenatal 21 days) on the intake,urine PH value and 100 days postpartum milk yield,disease rate of dairy cows.The results found that the intake of cows fed anionic salt additive dietary has no significant differences from the control group.after being fed 4 days,the urine pH was significantly lower,100 days postpartum milk yield was significantly increased and the incidence rate decreased significantly.direct economic benefit was improved significantly.It is suggested that adding anionic salt in high dairy cows diets would improve the health status of postpartum cows,improve lactation performance and economic benefits.Therefore,self-developed anion salt does have effect.