Paul Daly (Fianna Fail) | Oireachtas source

Could a blood sample not be got at that stage? Can DNA be taken from blood? Why does it have to be hair? It must be very frustrating when the process is so slow anyway and then a hair follicle is not up to scratch, whereas if blood were taken when the vet is microchipping and doing the markings, it would be guaranteed. Does blood not work for DNA?