I only just saw this thread now.
First of all may I take the time to say that with my warmest hear felt sympathies, you and your family are in my prayers, my your father-in-law rest in peace.
Seconly, I am very sorry to hear of your losses with your males, I will pray that your females remain fine and that you are able to continue the genetics with off spring. I know it is not the same as the fathers but maybe it can lessen the loss to an extent.