Effect of dietary cobalt level and supplementation with vitamin B12 on dairy cow performance, metabolism and indicators of energy status in the transition dairy cows

Aims & Objectives
To determine the effect of different types of cobalt supplementation on dairy cow performance and indicators of cobalt status and the benefits of vitamin B12 supplementation in cobalt restricted cows.

Expected Outcomes

  • A comprehensive understanding of the cobalt requirements in transition cows and the benefits of vitamin B12 supplementation either in a non-rumen or rumen protected form in cobalt restricted animals.
  • The use of sensitive functional markers of B12 status will help define marginal levels of cobalt (B12) in contemporary high-yielding dairy cows.
  • Benefits will be reported in terms of cow liver health, milk yield and composition and methane emissions.

Start Date             
Oct 2014

Completion Date
Dec 2015

Lead Contractor
University of Nottingham

Other Delivery Partners
University of Reading, Harper Adams University, SRUC, Royal Veterinary College, Aberystwyth University

AHDB Dairy

For further information please contact: stephen.whelan@ahdb.org.uk or call 024 7647 8632


Farmer summary: Effect of cobalt and vitamin B12 on dairy cow metabolism and performance during the tranistion period.

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