EFFECTS OF DIET SUPPLEMENTATION WITH ANIONIC SALTS ON PRODUCTIVE PERFORMANCE OF DAIRY COW

This research proves the effects of Calving Care on reproductive performance in dairy cow, during three successive lactations, on a group of 10 Holstein Friesian cows, using the method of period research. Group M1 / 2014 of 10 cows was considered the control group in which Calving Care was not administered, monitoring its reproductive performance throughout the lactation of 2014. Group E / 2015 was the experimental group, they got Calving Care 300 g / cow / day, 21 days before calving, homogenized in the TMR. The calculated cation-anion difference (DCAD) was -15.28 mEq / 100 g dry matter. Group M2 / 2016 was the second control group, without Calving Care, but the reproductive performance in the following lactation was monitored. After calving, each group was monitored for milk production per 305 days lactation, the total amount of milk fat and milk protein respectively