Blood is a good source of DNA, although other tissues such as skin biopsies or hair follicles can be used (Heal et al, 2002). Milk, which is widely available and obtained non-invasively, would be the source of choice in lactating animals. However, it is difficult to extract DNA from small samples of milk in quantities sufficient for simultaneous genotyping at multiple loci. The objective of this study was to determine whether genomic DNA isolated from small amounts of milk could be amplified to provide sufficient material for running multiple genotyping reactions.