Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 552411
Title Relationship between resumption of ovarian activity, days open, energy balance and metabolic status in dairy cows with different dry period lengths in early lactation
Author(s) Ma, J.; Hoeij, R.J. van; Lam, T.J.G.M.; Kemp, B.; Knegsel, A.T.M. van
Source In: Proceedings of the 17th International Conference on Production Diseases in Farm Animals. - Bern, Switserland : University of Bern - ISBN 9783906813936 - p. 176 - 176.
Event Bern, Switserland : University of Bern - ISBN 9783906813936 17th International Conference on Production Diseases in Farm Animals (ICPD), Bern, 2019-06-27/2019-06-29
Department(s) Adaptation Physiology
WIAS
Publication type Abstract in scientific journal or proceedings
Publication year 2019
Abstract Negative energy balance (NEB) in dairy cows results from a fast increase in milk production post calving while feed intake is limited in this period. NEB is accompanied with an altered metabolic status, which triggers metabolic disorders. Metabolic status in early lactation is related with reproductive performance, e.g. reduced concentrations of insulin and IGF-I, which contributes to reduced follicular responsiveness to gonadotrophic stimulation, and thus prevents the dominant follicle to ovulate, resulting in a delay in the resumption of cyclicity. Omitting or shortening the dry period (DP), adjusting dietary energy level or feeding different dietary energy sources is of interest because that could minimize the risk of NEB, postpartum metabolic diseases and suboptimal fertility like delayed resumption of postpartum ovarian cyclicity. The aim of this study is to investigate the effect of DP length, dietary energy level, dietary energy source and interactions among these factors on fertility (resumption of ovarian cyclicity and days open) of dairy cows postpartum. Additionally, the relation between energy balance and metabolic status of dairy cows during early lactation and resumption of ovarian cyclicity and days open will be evaluated.
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