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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

A prospective cohort study was performed in the purebred Hereford herd at Götala Beef and Lamb Research Centre, Sweden. The study's first objective was to assess the ability of an automatic activity monitoring system (AAMS) to detect estrus in beef suckler cows, and its second objective was to...

Author(s)
Nelson, S. T.; Haadem, C. S.; Nødtvedt, A.; Hessle, A.; Martin, A. D.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 87, pp 205-211
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

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
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

Three random regression models were developed for routine genetic evaluation of Danish, Finnish, and Swedish dairy cattle. Data included over 169 million test-day records with milk, protein, and fat yield observations from over 8.7 million dairy cows of all breeds. Variance component analyses...

Author(s)
Lidauer, M. H.; Pösö, J.; Pedersen, J.; Lassen, J.; Madsen, P.; Mäntysaari, E. A.; Nielsen, U. S.; Eriksson, J. Ǻ.; Johansson, K.; Pitkänen, T.; Strandén, I.; Aamand, G. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2015, 98, 2, pp 1296-1309
Abstract

The milk metabolomes of 407 individual Swedish Red dairy cows were analyzed by nuclear magnetic resonance spectroscopy as part of the Danish-Swedish Milk Genomics Initiative. By relating these metabolite profiles to total milk protein concentration and rheological measurements of rennet-induced...

Author(s)
Sundekilde, U. K.; Gustavsson, F.; Poulsen, N. A.; Glantz, M.; Paulsson, M.; Larsen, L. B.; Bertram, H. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 10, pp 6076-6084

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