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Animal Science Database

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Abstract

The aims were to characterize follicular dynamics in response to supplemental progesterone (P4) and to investigate the relationships between follicular growth and onset of luteolysis in P4-treated cows, submitted or not to artificial insemination (AI). Nonsuckled beef cows detected in estrus were...

Author(s)
Martins, T.; Pugliesi, G.; Sponchiado, M.; Cardoso, B. O.; Silva, K. R. da; Celeghini, E. C. C.; Binelli, M.
Publisher
Elsevier Inc, New York, USA
Citation
Domestic Animal Endocrinology, 2019, 68, pp 1-10
Abstract

Transrectal palpation of the reproductive tract is the most common method for pregnancy determination in cattle and is considered a veterinary skill that new veterinary medicine (DVM) graduates should perform proficiently. However, using privately owned cattle to train students can be difficult...

Author(s)
Bond, R. L.; Midla, L. T.; Gordon, E. D.; Welker, F. H. B.; Masterson, M. A.; Mathys, D. A.; Mollenkopf, D. F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 10, pp 9236-9240
Abstract

An efficient dairy herd must produce a living, healthy calf per cow per year, and it should be accomplished with a Calving-Conception Interval (CCI) no greater than 100 days. Objective: Describe CCI epidemiological aspects in specialized dairy cattle in Costa Rica during the 2000-2013 period....

Author(s)
Roche Loaiza, A. la; Vargas Leitón, B.; Camacho Sandoval, J.; Castillo Badilla, G.; Romero Zúñiga, J. J.
Publisher
Escuela de Medicina Veterinaria, Universidad Nacional de Costa Rica, Heredia, Costa Rica
Citation
Revista Ciencias Veterinarias, 2019, 37, 1, pp 27-45
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

In dairy production, high fertility contributes to herd profitability by achieving greater production and maintaining short calving intervals. Improved management practices and genetic selection have contributed to reversing negative trends in dairy cow fertility, but further progress is still...

Author(s)
Fleming, A.; Baes, C. F.; Martin, A. A. A.; Chud, T. C. S.; Malchiodi, F.; Brito, L. F.; Miglior, F.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 4, pp 3722-3734
Abstract

Greater metabolic demands in high-producing dairy cows are believed to be a cause of sub-fertility in these animals. Previously, supplementation with vitamin B complex molecules has shown benefits in improving milk production, health, and reproductive efficiency of dairy cows. The primary aim of...

Author(s)
Kaur, M.; Hartling, I.; Burnett, T. A.; Polsky, L. B.; Donnan, C. R.; Leclerc, H.; Veira, D.; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1642-1657
Abstract

Periparturient hypocalcemia is frequently observed and considered as a gateway disease that is associated with various health issues. The objective of this study was to evaluate the association of hypocalcemia with early-lactation milk yield, reproductive performance, and culling across a large...

Author(s)
Venjakob, P. L.; Pieper, L.; Heuwieser, W.; Borchardt, S.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 10, pp 9396-9405
Abstract

The objectives of this study were (1) to assess the effect of purulent vaginal discharge (PVD) on reproductive performance using a 4-point vaginal discharge score (VDS) and (2) to evaluate the effect of PGF treatment in cows with PVD on reproductive performance. Holstein cows (n=2,473) from 1...

Author(s)
Borchardt, S.; Ludwig, S.; Heuwieser, W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 12, pp 11403-11412
Abstract

This study aimed to characterize the profile of milk cattle farmers of the Northwest region of Minas Gerais State regarding the use of artificial insemination (AI) and see the most relevant factors in the perception of farmers for the adoption process of AI. From January to April 2014, 97 milk...

Author(s)
Cunha, J. C. da; Araújo, I. C. S. de; Resende Filho, N. J.; Carvalho, G. R. de
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2018, 47, pp e20170196
Abstract

Factors influencing early development such as birth weight, nest competition, and the diet received during rearing have been proposed as elements conditioning the future reproductive performance of European rabbit (Oryctolagus cuniculus) females. To evaluate their effects, we followed the life of...

Author(s)
Martínez-Paredes, E.; Ródenas, L.; Pascual, J. J.; Savietto, D.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, 11, pp 2347-2355

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