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Abstract

New Zealand's seasonal dairy farming system entails a condensed calving pattern with cows required to conceive within approximately 12 wk of the planned start of calving. This has resulted in strong selection for fertility through culling of nonpregnant cows and relatively strong emphasis on ...

Author(s)
Craig, H. J. B.; Stachowicz, K.; Black, M.; Parry, M.; Burke, C. R.; Meier, S.; Amer, P. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 12, pp 10991-11003
Abstract

As cost-benefit analyses are required to prioritize and promote disease control and eradication programs within a jurisdiction, national data relating to disease-related production losses are particularly useful. The objectives of the current study were to use Irish bovine herpesvirus 1 (BoHV-1)...

Author(s)
Sayers, R. G.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 2, pp 1340-1352
Abstract

Bovine herpesvirus-1 (BoHV-1) is a viral pathogen of global significance that is known to instigate several diseases in cattle, the most notable of which include infectious bovine rhinotracheitis and bovine respiratory disease. The genetic variability in the humoral immune response to BoHV-1 has,...

Author(s)
Ring, S. C.; Graham, D. A.; Sayers, R. G.; Byrne, N.; Kelleher, M. M.; Doherty, M. L.; Berry, D. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 7, pp 6190-6204
Abstract

Body condition loss during early lactation varies among cows in the herd and is associated with future health and reproductive outcomes. The objective of this study was to gain a greater understanding of the relationship between previous calving interval and body condition change during the first...

Author(s)
Middleton, E. L.; Minela, T.; Pursley, J. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 6, pp 5577-5587
Abstract

The aim of this study was to analyze the impact of reproductive management practices on fertility in primiparous and multiparous dairy cows and to identify the differences by parity. Data on reproductive performance and management of cows were gathered from 34 large commercial Holstein-Friesian...

Author(s)
Fodor, I.; Gábor, G.; Lang, Z.; Abonyi-Tóth, Z.; Ózsvári, L.
Publisher
Canadian Veterinary Medical Association, Ottawa, Canada
Citation
Canadian Journal of Veterinary Research, 2019, 83, 3, pp 218-227
Abstract

The objective of this study was to investigate the potential of milk mid-infrared (MIR) spectroscopy, MIR-derived traits including milk composition, milk fatty acids, and blood metabolic profiles (fatty acids, β-hydroxybutyrate, and urea), and other on-farm data for discriminating cows of good...

Author(s)
Ho, P. N.; Bonfatti, V.; Luke, T. D. W.; Pryce, J. E.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 11, pp 10460-10470
Abstract

Infections with the liver fluke Fasciola hepatica may result in considerable economic losses in the dairy livestock industry worldwide. Infections have been associated with detrimental impacts on milk production and milk quality as well as reduced fertility. However, most related data rely on...

Author(s)
May, K.; Brügemann, K.; König, S.; Strube, C.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2019, 267, pp 32-41
Abstract

High-yielding cows may suffer from negative energy balance during early lactation, which can lead to ketosis and delayed ability of returning to cyclicity after calving. Fast recovery after calving is essential when breeding for improved fertility. Traditionally used fertility traits, such as the...

Author(s)
Häggman, J.; Christensen, J. M.; Mäntysaari, E. A.; Juga, J.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2019, 13, 2, pp 248-255
Abstract

Automated monitoring of fertility in dairy cows using milk progesterone is based on the accurate and timely identification of luteolysis. In this way, well-adapted insemination advice can be provided to the farmer to further optimize fertility management. To properly evaluate and compare the...

Author(s)
Adriaens, I.; Martin, O.; Saeys, W.; Ketelaere, B. de; Friggens, N. C.; Aernouts, B.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 12, pp 11491-11503
Abstract

The effect of training background of persons performing artificial insemination (AI) (herd-owner inseminators (OWNER), AI technicians (AI-T), and fertility consultants (FC)) on pregnancy rate and their ability to detect cows not in oestrus were studied. A total of 1584 re-AI occasions on 754 dairy ...

Author(s)
Vartia, K.; Taponen, J.; Heikkinen, J.; Lindeberg, H.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 102, pp 23-28

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