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
9	2007	TUNISIA	18335	346	5451	5950	3.6	3.17	438		dg.oep@email.ati.tn
8	2006	TUNISIA	9483	350	6012	5949	3.59	3.16	448		dg.oep@email.ati.tn
7	2005	TUNISIA	9780	358	6179	5950	3.58	3.16	442		dg.oep@email.ati.tn
6	2004	Tunisie	13336	339	6134	6013	3.25	3.10	441		dg.oep@email.ati.tn
5	2003	Tunisie	13545	324	5904	6152	3.31	3.15	429		dg.oep@email.ati.tn
4	2002	TUNISIA	13466	329	6161	6206	3.42	3.19	417		dg.oep@email.ati.tn
3	2001	TUNISIA	14019	324	6140	6252	3.35	3.17	424		dg.oep@email.ati.tn