unable to retrive values from checkboxlist which is in place holder

hi, i m using a place holder in which i m inserting checkbox list but i m unable to retrive selected values please help
 
    protected void cblAnimaltype_SelectedIndexChanged(object sender, EventArgs e)
    {
        //cblBreeds.ClearSelection();
        try
        {
            int numCheckBoxList = AnimalsCount();
            int count = 0;
            //for (int i = 1; i <= numCheckBoxList; i++)
           // {
              //  count = i;
        &nb ...