PGgRc approves this going forward to publication BUT before submission  I would like some comment on the section in lines 516- 519 regarding the application of rumen microbiome characterisation to identify LMY  ruminants.  Therefore could this be sent to John McEwan and Suzanne Rowe for their comment on whether this paper might divulge  anything that may impact the application of this in our NZ livestock.  I would laso like to be sure that the focus of our livestock genetics programmes are well connected to this emerging  knowledge.  