Key	Year	Country	Number of  lactations	Length of the lactations (days)	Milk yield per recorded cow (kg)	Milk per cow in 305 days (kg)	Percent fat content (%)	Percent protein content (%)	Calving interval (days)	Others	E-mail address of the responsible
3	2002	Ireland	77,570	280	6739		3.72%	3.31%			acromie@icbf.com
1	2001	Ireland	77,242	270	6638		3.74%	3.28%	394		acromie@icbf.com