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Abstract

Over the last decades, fertility of dairy cows has declined due to selection strategies focusing on milk yield. To study the effect of genetic merit for fertility on the proteome of the bovine uterine luminal fluid, Holstein heifers with low- and two groups of heifers with high-fertility index...

Author(s)
Gegenfurtner, K.; Fröhlich, T.; Flenkenthaler, F.; Kösters, M.; Fritz, S.; Desnoës, O.; Bourhis, D. le; Salvetti, P.; Sandra, O.; Charpigny, G.; Mermillod, P.; Lonergan, P.; Wolf, E.; Arnold, G. J.
Publisher
Oxford University Press, Cary, USA
Citation
Biology of Reproduction, 2020, 102, 3, pp 730-739
Abstract

This study aimed to assess characteristics of bovine cryopreserved sperm and evaluate its relation to field fertility in fixed-time artificial insemination (FTAI). Semen samples of 16 bulls were used to inseminate 811 Nellore cows, and four of these bulls were also used to inseminate 101 Nellore...

Author(s)
Okano, D. S.; Penitente Filho, J. M.; León, V. E. G.; Maitan, P. P.; Silveira, C. O.; Waddington, B.; Díaz-Miranda, E. A.; Costa, E. P. da; Guimarães, S. E. F.; Guimarães, J. D.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2019, 54, 3, pp 604-612
Abstract

The evaluation of anogenital distance (AGD), the distance from the center of the anus to base of the clitoris, as a potential fertility trait for genetic selection in dairy cows has generated recent interest. The objectives of this cross-sectional observational study were to (1) characterize the...

Author(s)
Gobikrushanth, M.; Purfield, D. C.; Kenneally, J.; Doyle, R. C.; Holden, S. A.; Martinez, P. M.; Canadas, E. R.; Bruinjé, T. C.; Colazo, M. G.; Ambrose, D. J.; Butler, S. T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1702-1711
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

Extraordinary advances are occurring in biomedical science that may revolutionise how we approach health and disease. Many have applications in the dairy industry. We have described one particular area of extracellular vesicles that have already proven to be of interest in diagnostics and...

Author(s)
Mitchell, M. D.; Crookenden, M. A.; Vaswani, K.; Roche, J. R.; Peiris, H. N.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2020, 60, 1, pp 1-9
Abstract

In this single herd observational study, there is investigation of the effects of 81 sires (with 11,424 artificial inseminations) on conception rates in 1790 Holstein cows for 5 years. Sires were categorized based on the published sire conception rate (SCR) into different sire fertility groups...

Author(s)
Abdalla, H.; Elghafghuf, A.; Elsohaby, I.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2019, 209, pp 106147
Abstract

Uterine and cervical size of Holstein dairy cows is reported among reasons for a decline in dairy cow fertility. Therefore, the objectives of this study were to (a) determine whether size of the cervix and uterus at 4 weeks postpartum impacted subsequent fertility at first service in Jersey cattle, ...

Author(s)
Poock, S. E.; Melendez, P.; Caldeira, M. O.; Moore, S. G.; Mayo, L. M.; Molina-Coto, R.; Lucy, M. C.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2020, 55, 8, pp 915-921
AbstractFull Text

In Ireland, the current genetic evaluation of dairy cattle includes a joint fertility and survival module. It is a multiple trait animal model combining 23 traits. Calving interval is utilized as the primary fertility trait, and this aligns with the definition used in many countries with...

Author(s)
Stachowicz, K.; Jenkins, G. M.; Amer, P. R.; Berry, D. P.; Kelleher, M. M.; Kearney, F. J.; Evans, R. D.; Cromie, A. R.
Publisher
Interbull Centre, Uppsala, Sweden
Citation
Interbull Bulletin, 2018, No.53, pp 57-63
Abstract

Mature weight of beef cows in the United States has been increasing as a correlated response to selection for calf growth. Unfavorable genetic correlations between cow weight and various measures of female fertility, stayability, and lifetime production suggest declining cow productivity might also ...

Author(s)
Snelling, W. M.; Kuehn, L. A.; Thallman, R. M.; Bennett, G. L.; Golden, B. L.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2019, 97, 1, pp 63-77
Abstract

The objectives of this study were to determine if the utilization of a presynchronization strategy would improve fertility at first artificial insemination (AI) during an E2/P4 ovulation synchronization protocol with or without GnRH administration at the beginning of the protocol. This experiment...

Author(s)
Pereira, M. H. C.; Wiltbank, M. C.; Guida, T. G.; Lopes, F. R., Jr.; Cappellozza, B. I.; Vasconcelos, J. L. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 147, pp 124-134

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