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Abstract

Two data files consisting of 3278 (one herd) and 4393 lactations (three herds) were used to characterize milk production of high-yielding Holstein cows milked three times per day and experiencing extended lactations (up to 1399 days) in a hot environment. Additional objectives were to identify risk ...

Author(s)
Mellado, M.; Flores, J. M.; Santiago, A. de; Veliz, F. G.; Macías-Cruz, U.; Avendaño-Reyes, L.; García, J. E.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Livestock Science, 2016, 189, pp 50-55
Abstract

The objectives were to evaluate the clinical response to intrauterine administration of chitosan microparticles (CM) and to assess efficacy for preventing metritis in dairy cows. Holstein cows (n=104; 40 primiparous and 64 multiparous) at increased risk for metritis (cows that had abortion,...

Author(s)
Daetz, R.; Cunha, F.; Bittar, J. H.; Risco, C. A.; Magalhaes, F.; Maeda, Y.; Santos, J. E. P.; Jeong, K. C.; Cooke, R. F.; Galvão, K. N.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 11, pp 8946-8955
Abstract

The aim of this study was to assess the effect of bearing twins on the health and performance of dairy cows. Data from twin-bearing Holstein Friesian cows at the Langhill Dairy Research Centre between January 1990 and July 2002 were compared to single-bearing cows to determine if there was any...

Author(s)
Bell, M. J.; Roberts, D. J.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Livestock Science, 2007, 107, 2/3, pp 274-281