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Animal Science Database

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Abstract

The objective was to identify herd-level indicators expressed as a proportion of sampled animals with increased nonesterified fatty acids (NEFA) or β-hydroxybutyric acid (BHBA), or decreased calcium in wk -1 and wk +1 relative to calving that were associated with herd-level incidence of retained...

Author(s)
Chapinal, N.; LeBlanc, S. J.; Carson, M. E.; Leslie, K. E.; Godden, S.; Capel, M.; Santos, J. E. P.; Overton, M. W.; Duffield, T. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 10, pp 5676-5682
Abstract

The objective was to compare reproductive performance with management programs based on an automated activity monitoring (AAM) system or a synchronized breeding program under field conditions. In total, 1,429 Holstein cows from 3 commercial herds in Ontario, Canada, were enrolled over 1 yr in a...

Author(s)
Neves, R. C.; Leslie, K. E.; Walton, J. S.; Leblanc, S. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 10, pp 5683-5693