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
6	2011	Jersey	3145	322	5191	4762	5.12	3.72	405		suzanne@holstein-uk.org
5	2010	Jersey	3264	318	4932	4530	5.17	3.77	412		suzanne@holstein-uk.org
4	2009	Jersey Island	3190	326	4780	4345	5.22	3.77	413		suzanne@holstein-uk.org
3	2003	UK (Jersey)	3062			4581	5.08	3.85	390		henryr@nmr.co.uk
2	2002	UK (Jersey)	3685			4550	5.22	3.75	389		henryr@nmr.co.uk
1	2001	UK (Jersey)	3748			4663	5.10	3.73	388		henryr@nmr.co.uk