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Abstract

The aim of this study was to document the effectiveness of the implementation of a cosynch protocol and fixed time artificial insemination in suckled beef cows kept under range conditions in Germany. In addition, the suitability of hCG administration as an alternative to the GnRH analog buserelin...

Author(s)
Schmitz, W.; Kramer, M.; Erhardt, G.; Gauly, M.; Driancourt, M. A.; Holtz, W.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Livestock Science, 2017, 206, pp 141-147
Abstract

Different therapeutic strategies have been used with the objective of improve luteal function to reduce embryonic losses. The objective of this work was to study the effect of the administration of GnRH or hCG at Day 4 post fixed time artificial insemination (FTAI) on reproductive efficiency in...

Author(s)
Fernandez, J.; Bruno-Galarraga, M. M.; Soto, A. T.; Sota, R. L. de la; Cueto, M. I.; Lacau-Mengido, I. M.; Gibbons, A. E.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 126, pp 63-67
Abstract

This study was designed to investigate the impact of buserelin acetate (BA) or human chorionic gonadotropin (hCG) administration on the day of first artificial insemination (AI) on subsequent luteal profile (diameter of corpus luteum (CL) and plasma progesterone) and conception rate in Murrah...

Author(s)
Pandey, A. K.; Ghuman, S. P. S.; Dhaliwal, G. S.; Agarwal, S. K.; Phogat, J. B.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2016, 51, 4, pp 478-484
Abstract

Lactating Holstein cows (n=158), at 213±112 days in milking and averaging 26±9 kg of milk per day, were randomly assigned to one of three treatment groups: control (CG, n=52, saline), GnRH (GG, n=55, 10 µg gonadorelin), and hCG (HG, n=51, 2500 IU) given five days after artificial insemination (AI). ...

Author(s)
Beltran, M. P.; Vasconcelos, J. L. M.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2008, 60, 3, pp 580-586
Abstract

The objective was to compare pharmacological strategies aiming to inhibit prostaglandin F2 alpha (PGF) synthesis (flunixin meglumine; FM), stimulate growth of the conceptus (recombinant bovine somatotropin; bST) and progesterone (P4) synthesis (human chorionic gonadotropin; hCG), as well as their ...

Author(s)
Rossetti, R. C.; Perdigão, A.; Mesquita, F. S.; SáFilho, M.; Nogueira, G. P.; Machado, R.; Membrive, C. M. B.; Binelli, M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2011, 76, 4, pp 751-758
Abstract

We first determined a dose of human chorionic gonadotropin (hCG) sufficient to induce ovulation in lactating Holstein cows. Ovaries of 85 previously inseminated cows were mapped using transrectal ultrasonography 7 d before pregnancy diagnosis and assigned randomly to treatments of saline, 100 µg...

Author(s)
Buttrey, B. S.; Burns, M. G.; Stevenson, J. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2010, 73, 4, pp 449-459
Abstract

The aim of this study was to evaluate the effect of the human chorionic gonadotropin (hCG) administration on days 5 and 20 of oestrous cycle on the rate of gestation of Alpine and Saanen goats during the breeding season induced by artificial photoperiod. 151 does were used in the study (Alpine...

Author(s)
Maffili, V. V.; Torres, C. A. A.; Prosperi, C. P.; Fonseca, J. F. da; Pontes, R. A. M.; Moraes, E. A. de; Costa, E. P. da; Santos, A. D. F.
Publisher
Universidade Federal de Uberlândia, Uberlândia, Brazil
Citation
Veterinária Notícias, 2005, 11, 1, pp 75-80
Abstract

The objective of this field trial was to compare the odds of pregnancy at 25 days (P25) and at 60 days (P60), of embryonic death (ED) between 25 and 60 days, and of non-pregnant cows returning to heat 20-25 days after artificial insemination (AI). Three fixed-time insemination protocols involving...

Author(s)
Amiridis, G. S.; Belibasaki, S.; Leontides, L.; Lymberopoulos, A.; Vainas, E.
Citation
Journal of Veterinary Medicine. Series A, 2000, 47, 5, pp 271-276
Abstract

Groups of Merino ewes were given daily intramuscular injections of 10 mg. progesterone for 12-14 days. In one experiment conducted during the breeding season, the ewes received pregnant mare's serum gonadotropin (PMS) on the day of the final progesterone injection and human chorionic gonadotropin...

Author(s)
LAMOND, D. R.
Citation
Proceedings of the Australian Society of Animal Production, 1960, 3, pp 120-125

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