. 2016 Aug 11;9(8):837–841. doi: 10.14202/vetworld.2016.837-841

Table-3.

Summary of studies on the impact of supplementation of RPC on milk production and composition on the lactating dairy cow.

Lactation stage	RPC (g/day)	DMI (kg/day)	Milk yield (kg/day)	Fat yield (g/day)	Protein yield (g/day)	References
21 days prepartum to 63 days postpartum	0	12.617.8	40.0	1593	1174	[8]
	45	11.918.7	43.3	1836	1314
	60	12.818.3	39.9	1596	1206
	75	12.518.8	41.0	1763	1262
14 days prepartum to 30 days postpartum	0	11.319.4	28.5	880	868	[4]
14 days prepartum to 30 days postpartum	20	11.419.9	31.4	1056	966	[4]
21 days prepartum to 21 days postpartum	0	12.014.8	29.6	1380	1050	[14]
21 days prepartum to 21 days postpartum	15	12.115.7	31.6	1460	1090	[14]
21-90 days postpartum	0	27.9	27.9	840	730	[18]
21-90 days postpartum	40	20.2	27.5	790	740	[18]
4 weeks prepartum to 20 weeks postpartum	0	No	30.71	1071	1009	[5]
4 weeks prepartum to 20 weeks postpartum	60	reported	34.23	958	902	[5]

RPC: Rumen protected choline, DMI: Dry matter intake