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Animal Science Database

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Abstract

An experiment was designed to evaluate the effect of extending duration of the presynchronization treatment in a long-term progestin-based estrus synchronization protocol. Heifers were assigned to either an 18 d (Day 0-18) or 14 d (Day 4 to Day 18) CIDR® treatment (1.38 g progesterone controlled...

Author(s)
Knickmeyer, E. R.; Thomas, J. M.; Locke, J. W. C.; Bonacker, R. C.; Ciernia, L. A.; Ketchum, J. N.; Ellersieck, M. R.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 136, pp 66-71
Abstract

The use of 4-day CoSynch+Controlled internal drug release (CIDR)+timed artificial insemination (TAI) in dairy heifers has resulted in adequate pregnancy rates compared with the 5-day CoSynch+CIDR+TAI protocol. The objective of this study was to compare follicular growth, timing of ovulation and...

Author(s)
Fishman-Holland, H.; Stoskute, A.; Ferrer, M. S.; Veal, D.; Bittar, J. H. J.; Rollin, E.; Lourenço, J.; Palomares, R. A.
Publisher
Wiley, Oxford, UK
Citation
Veterinary Medicine and Science, 2019, 5, 3, pp 379-389
Abstract

Fertility traits were recently added to the evaluation of genetic merit, allowing for the selection of Holstein cattle with improved reproductive performance. In the current study, we investigated the associations among genomic merit for daughter pregnancy rate (GDPR) and heifer conception rate...

Author(s)
Veronese, A.; Marques, O.; Peñagaricano, F.; Bisinotto, R. S.; Pohler, K. G.; Bilby, T. R.; Chebel, R. C.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 7, pp 6639-6648
Abstract

Our objective was to retrospectively compare pregnant versus nonpregnant cattle in terms of vascular and morphometric changes in corpora lutea between d 12 and 20 following timed artificial insemination (TAI). Crossbred (Gir × Holstein) lactating dairy cows (n=136) and heifers (n=111) were bred...

Author(s)
Siqueira, L. G.; Arashiro, E. K.; Ghetti, A. M.; Souza, E. D.; Feres, L. F.; Pfeifer, L. F.; Fonseca, J. F.; Viana, J. H.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 6, pp 5612-5622
Abstract

Improving artificial insemination (AI) pregnancy rates in replacement heifers improves the genetic advancement within a herd. Heifers that have completed at least three estrous cycles prior to breeding have greater pregnancy rates compared to acyclic females. Therefore, it was hypothesized that a...

Author(s)
Monn, R. E.; Poole, R. K.; Mackey, J. C.; Mayberry, K. J.; Dudley, H. B.; Alley, M.; Poole, D. H.
Publisher
Oxford University Press, Oxford, UK
Citation
Translational Animal Science, 2019, 3, 1, pp 456-463
Abstract

This study aimed to evaluate the effect of repeated intravenous lipopolysaccharide (LPS) infusions in nonlactating heifers on (1) the systemic proinflammatory state as measured by biomarkers in blood and plasma, and (2) endometrial gene expression of candidate transcripts on d 15 of gestation. Our...

Author(s)
Fernandes, A. C. C.; Davoodi, S.; Kaur, M.; Veira, D.; Melo, L. E. H.; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3531-3543
Abstract

Our objective was to assess the effect of treatment with human chorionic gonadotropin (hCG) 7 d after artificial insemination (AI) or at the time of in vitro-fertilized (IVF) embryo transfer on reproductive outcomes, including progesterone (P4), interferon-tau stimulated gene 15 (ISG15),...

Author(s)
Niles, A. M.; Fricke, H. P.; Carvalho, P. D.; Wiltbank, M. C.; Hernandez, L. L.; Fricke, P. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 3, pp 2593-2606
Abstract

Infertility remains the most prevalent reason for cattle being removed from production environments. We utilized metabolomic profiling to identify metabolites in the blood plasma that may be useful in identifying infertile heifers at the time of artificial insemination (AI). Prior to AI, phenotypic ...

Author(s)
Phillips, K. M.; Read, C. C.; Kriese-Anderson, L. A.; Rodning, S. P.; Brandebourg, T. D.; Biase, F. H.; Marks, M. L.; Elmore, J. B.; Stanford, M. K.; Dyce, P. W.
Publisher
Nature Publishing Group, London, UK
Citation
Scientific Reports, 2018, 8, 1, pp 13196
Abstract

Heifers and cows that exhibit estrus before fixed-time AI have increased concentrations of estradiol and greater conception rates compared with those that do not. Our objective was to determine whether small doses of gonadotropin-releasing hormone following controlled internal drug-release insert...

Author(s)
Rich, J. J. J.; Northrop, E. J.; Perkins, S. D.; Perry, G. A.
Publisher
American Registry of Professional Animal Scientists (ARPAS), Champaign, USA
Citation
Professional Animal Scientist, 2018, 34, 6, pp 566-570
Abstract

To determine the effects of repeated trace mineral injections on heifer development and reproductive performance, commercial Angus heifers (n=290; 199±34.3 kg; 221±22 d of age) were utilized in a completely randomized design. Heifers were stratified by body weight (BW) and were administered an...

Author(s)
Stokes, R. S.; Volk, M. J.; Ireland, F. A.; Gunn, P. J.; Shike, D. W.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 9, pp 3943-3954

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