Sex preselection of sheep using mineral solution injection via subcutaneous

The injection on Calcium (Ca) and Magnesium (Mg) solution is regarded as a method that have been conducted for sex preselection in sheep. Therefore, this trail was aimed to examine the effect of macro minerals such CaMg subcutaneous injected to Kurdish breed ewes during pre and post mating on lamb sex ratio skewing toward female. Thirty ewes at cycling multiparous period (based on their age and live weight (LW)) were randomly divided into two groups (15 ewes per group). Weekly (for four weeks) from four weeks’ days pre- to one week post-mating, each ewe (CaMg group) were subcutaneous injected by 30 ml of CaMg solution or sterile water (control group). Ewes live weigh at the end of the study were numerically higher (2.55 kg) in ewes injected with CaMg compared to control group. The serum ca and Mg were higher (P0.05) by CaMg injection. Reproductive hormone such estrogen was not different between control and injected ewes (P>0.05). Although, progesterone (at CIDR removal period) were increased (P