We evaluated daily supplementation with rumen-protected choline (RPC) for 45 days on the metabolism of transition dairy cows, assigning 15 cows to either control (no RPC but 1000 IU vitamin E) or treatment (50 g RPC plus 1000 IU vitamin E). On day 20 of lactation, treatment significantly increased plasma cholesterol, folate and α-tocopherol and lowered NEFA, with a tendency for increased glucose and choline phospholipids, and reduced β- hydroxybutyrate. These differences indicate improved lipid and methyl group metabolisms. Milk production tended to be increased. RPC supplementation seems useful for optimizing the metabolic profile of transition dairy cows.
Metabolism of periparturient dairy cows fed rumen-protected choline
CAMPAGNOLI A;
2004-01-01
Abstract
We evaluated daily supplementation with rumen-protected choline (RPC) for 45 days on the metabolism of transition dairy cows, assigning 15 cows to either control (no RPC but 1000 IU vitamin E) or treatment (50 g RPC plus 1000 IU vitamin E). On day 20 of lactation, treatment significantly increased plasma cholesterol, folate and α-tocopherol and lowered NEFA, with a tendency for increased glucose and choline phospholipids, and reduced β- hydroxybutyrate. These differences indicate improved lipid and methyl group metabolisms. Milk production tended to be increased. RPC supplementation seems useful for optimizing the metabolic profile of transition dairy cows.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
