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Abstract

Genetic evaluation of female fertility in Danish, Finnish, and Swedish dairy cows was updated in 2015 to multiple-trait animal model evaluation, where heifer and cow fertility up to third parity are considered as separate traits. A model for conception rate was also developed, which required...

Author(s)
Muuttoranta, K.; Tyrisevä, A. M.; Mäntysaari, E. A.; Pösö, J.; Aamand, G. P.; Lidauer, M. H.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 9, pp 8184-8196
Abstract

Milk pH is increased in lactating dairy cattle with subclinical mastitis (SCM) and intramammary infection (IMI). We hypothesized that milk pH testing provides an accurate, low-cost, and practical on-farm method for diagnosing SCM and IMI. The main objective was to evaluate the clinical utility of...

Author(s)
Kandeel, S. A.; Megahed, A. A.; Ebeid, M. H.; Constable, P. D.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1417-1427
Abstract

Udder health problems are often associated with milk losses. These losses are different between quarters, as infected quarters are affected both by systemic and pathogen-specific local effects, whereas noninfected quarters are only subject to systemic effects. To gain insight in these losses and...

Author(s)
Adriaens, I.; Huybrechts, T.; Aernouts, B.; Geerinckx, K.; Piepers, S.; Ketelaere, B. de; Saeys, W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 11, pp 10327-10336
Abstract

Efficiency in animal protein production can be defined in different ways, for example the amount of human-digestible essential amino acids (HDEAA) in the feed ration relative to the amount of HDEAA in the animal products. Cattle production systems are characterised by great diversity and a wide...

Author(s)
Patel, M.; Sonesson, U.; Hessle, A.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2017, 11, 3, pp 519-528
Abstract

Timely and accurate identification of cows with intramammary infections is essential for optimal udder health management. Various sensor systems have been developed to provide udder health information that can be used as a decision support tool for the farmer. Among these sensors, the DeLaval...

Author(s)
Dalen, G.; Rachah, A.; Nørstebø, H.; Schukken, Y. H.; Reksen, O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 6, pp 5419-5429
Abstract

Agricultural industrialisation and globalisation have steadily increased the transportation of food across the world. In efforts to promote sustainability and self-sufficiency, organic milk producers in Sweden are required to produce a higher level of cattle feed on-farm in the hope that increased...

Author(s)
Aggestam, V.; Buick, J.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Journal of Dairy Research, 2017, 84, 3, pp 360-369
Abstract

Although Canadian dairy herds have been infected with bovine leukemia virus (BLV) for years, recent research has put new emphasis on the potential negative effects of this infection. Consequently, BLV control is becoming more favorable; however, BLV control cannot be successful without identifying...

Author(s)
Kuczewski, A.; Orsel, K.; Barkema, H. W.; Kelton, D. F.; Hutchins, W. A.; Meer, F. J. U. M. van der
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 3, pp 2433-2437
Abstract

New evidence for cattle husbandry practices during the earliest period of the southern Scandinavian Neolithic indicates multiple birth seasons and dairying from its start. Sequential sampling of tooth enamel carbonate carbon and oxygen isotope ratio analyses and strontium isotopic provenancing...

Author(s)
Gron, K. J.; Montgomery, J.; Rowley-Conwy, P.
Publisher
Public Library of Sciences (PLoS), San Francisco, USA
Citation
PLoS ONE, 2015, 10, 7, pp e0131267
Abstract

This study investigated the potential for accurate detection of clinical mastitis (CM) in an automatic milking system (AMS) using electronic data from the support software. Data from cows were used to develop the model, which was then tested on 2 independent data sets, 1 with 311 cows (same farm...

Author(s)
Khatun, M.; Thomson, P. C.; Kerrisk, K. L.; Lyons, N. A.; Clark, C. E. F.; Molfino, J.; García, S. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 10, pp 9385-9395
Abstract

The aim of this paper was to develop a national single-step genomic BLUP that integrates multi-national genomic estimated breeding values (EBV) and associated reliabilities without double counting dependent data contributions from the different evaluations. Simultaneous use of all data, including...

Author(s)
Vandenplas, J.; Spehar, M.; Potocnik, K.; Gengler, N.; Gorjanc, G.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 1, pp 465-478

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