Effect of Anionic Salt Supplementation on Metabolic Profile, Peripartum Diseases and Pregnancy Rate of Dairy Cows During the Prepartum Period

Abstract

The aim of the present work was to examine the effects of anionic salts (MgCl2 or MgSO4) supplementation on metabolic profile, peripartum diseases and pregnancy rate of dairy cows during the prepartum period. Fourty five Holstein dairy cows were placed on 1 of 3 prepartum treatments. Treatment groups were balanced body condition score as far as similar. Treatments were total mixed ration (TMR) without anionic salt (control), TMR supplemented with 30 g/d/cow MgCl2 or TMR supplemented with 30 g/d/cow MgSO4. After parturation, all groups were fed with same TMR. The presynch-ovsynch protocol was used and fixed time artificial insemination was done after 30 days postpartum. The experiment was lasted for 8 weeks of postpartum. Cows fed MgCl2 supplemented TMR increased milk yield compared with control and MgSO4 supplemented TMR. Supplementing anionic salts reduced serum AST and ALT concentrations, increased serum glucose, HDL, IgG, Ca and Mg concentrations. Health and reproductive performance were not different between treatments. These data suggets that anionic salts supplementation in TMR during prepartum can alter milk yield and blood biochemical parameters.