The persistent milk yield response to frequent milking during early lactation is associated with persistent changes in mammary gene expression.

ABSTRACT: Four-times daily milking during the first 3 weeks of lactation elicits an increase in milk yield, which persists through late lactation even after twice-daily milking is imposed. We hypothesized that this milk yield response would be associated with changes in mammary proliferation, apoptosis, and gene expression, which would persist throughout lactation. Six multiparous cows were assigned to unilateral frequent milking (UFM; twice daily milking of the left udder half (2X), four-times daily milking of the right udder half (4X)) on days 1 to 21 of lactation, followed by 2X thereafter. Udder halves initially milked 4X produced more milk than those milked 2X during, and after UFM treatment, through 180 days in milk (DIM). To determine the mechanisms involved in the persistent milk yield r

ORGANISM(S): Bos taurus

SUBMITTER: Emma Wall 

PROVIDER: E-GEOD-27851 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress