Summary
This randomised controlled trial examined how energy plane during the dry period influences metabolic status and production in transition dairy cows. A controlled-energy, high-fibre diet fed throughout the dry period resulted in less negative energy balance postpartum and significantly fewer episodes of hyperketonemia in the first three weeks after calving compared to high-energy or intermediate-energy feeding strategies. The findings suggest that restricting energy intake during the entire dry period may reduce metabolic complications associated with the peripartum period.
Regional applicability
The study was conducted in the United States with Holstein dairy cows in tiestall housing. Findings are relevant to United Kingdom dairy producers, particularly those managing housed winter feeding systems, though housing type and forage availability may influence practical applicability. The metabolic principles regarding dry cow nutrition are broadly transferable to UK dairy systems.
Key measures
Dry matter intake; predicted energy balance; blood BHBA concentration (hyperketonemia defined as ≥1.2 mmol/L); NEFA concentrations; milk yield; energy-corrected milk yield; milk composition
Outcomes reported
The study measured dry matter intake, energy balance, blood β-hydroxybutyrate (BHBA) and nonesterified fatty acids (NEFA) concentrations, milk production, milk composition, and incidence of hyperketonemia in the first three weeks postpartum across three dietary energy strategies during the dry period.
Topic tags
Dig deeper with Pulse AI.
Ask about this record, its theme or its relevance to UK farming and policy. Pulse AI uses selected catalogue evidence and cites the sources it draws on.