Use of Straws
I understand that RP in the USA buy straws of semen and typically will buy a few extra to ensure they don’t have to change donors part way through their journey. This is not the same as the Australian method. I also understand that IVF (but not all AR techniques) allow multiple embryos to be created from a single straw. A RP might harvest 10 eggs, and fertilise them from one straw. This could create a family of three children from one straw without the need to go back for a second. Typically, how many straws does an Australian RP use in total?