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Abstract

Objective: To determine if insemination at standing heat results in a similar or higher pregnancy rate compared with fixed time artificial insemination, and to study some factors affecting the pregnancy rate. Methods: A total of 8 944 inseminations were included in this study, from which 6 823 ...

Author(s)
Khalil, A. T. A. R. Y.; Hussein, M. M.
Publisher
Hainan Medical University, Haikou, China
Citation
Asian Pacific Journal of Reproduction, 2019, 8, 4, pp 181-186
Abstract

The objective of the present study was to evaluate the effects of clinical mastitis at the beginning of lactation on reproductive performance of dairy cows in Algeria. Calving to first insemination and calving to conception intervals, number of insemination per conception and conception rate at the ...

Author(s)
Bouamra, M.; Ghozlane, F.; Ghozlane, M. K.
Publisher
Academic Journals, Lagos, Nigeria
Citation
African Journal of Biotechnology, 2017, 16, 2, pp 91-95
Abstract

Our objective was to compare the AI submission rate and pregnancies per artificial insemination (P/AI) at first service of lactating Holstein cows submitted to a Double-Ovsynch protocol and timed artificial insemination (TAI) versus artificial insemination (AI) to a detected estrus after...

Author(s)
Santos, V. G.; Carvalho, P. D.; Maia, C.; Carneiro, B.; Valenza, A.; Fricke, P. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 10, pp 8507-8517
Abstract

This study was conducted to assess the problems associated with the artificial insemination service in Essera woreda of Dawuro zone, southern Ethiopia from December, 2016 to August, 2017. The study was conducted using questionnaire survey and records in targeted human and dairy cow's population,...

Author(s)
Fentaye Kassa; Wubshet Wuletaw
Publisher
Academic Journals, Lagos, Nigeria
Citation
International Journal of Livestock Production, 2018, 9, 2, pp 24-28
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

Objective: To test the effectiveness of CRESTARND protocol among local cows in Burkina Faso. In particular, the aim is to determine the rate of heat synchronization and gestation for artificial insemination (A.I) in the Cascade Region and to analyze influencing factors in order to propose solutions ...

Author(s)
Blagna, S.; Tellah, M.; Mbaindingatoloum, F. M.; Logtene, Y. M.; Boly, H.
Publisher
Elewa Biosciences F.a.C.T. Ltd, Nairobi, Kenya
Citation
Journal of Applied Biosciences, 2017, 110, pp 10819-10830
Abstract

Two experiments were conducted to evaluate the impact of two vaccines on the reproductive performance of multiparous beef cows in Mato Grosso do Sul, Midwest Brazil. In Experiment 1,765 calved multiparous Nellore cows were subjected to the same fixed-time artificial insemination (FTAI) protocol and ...

Author(s)
Ferreira, L. C. L.; Fernandes, H. J.; Silva, A. G.; Fernandes, C. E.; Dutra, I. S.; Pupin, R. C.; Lemos, R. A. A.
Publisher
Colégio Brasileiro de Patologia Animal, Rio de Janeiro, Brazil
Citation
Pesquisa Veterinária Brasileira, 2018, 38, 3, pp 456-461
Abstract

Using a 5-d controlled internal drug-release (CIDR)-Cosynch resynchronization protocol, the objective of this study was to determine the effect of the initial GnRH injection on pregnancy per artificial insemination (P/AI) to the second artificial insemination in lactating Holstein dairy cows. On...

Author(s)
Spencer, J. A.; Carnahan, K.; Shafii, B.; Price, W. J.; Dalton, J.; Ahmadzadeh, A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 9, pp 8524-8531
Abstract

Artificial insemination is beginning to find its place in Algerian dairy cattle farms. The bovine artificial insemination (AI) assessments for a three-year period in the semi-arid wilaya of Sétif on 4 855 insemination acts carried out by 5 inseminators in 3 664 cows of 5 different breeds belonging...

Author(s)
Mouffok, C.; Allouni, A.; Semara, L.; Belkasmi, F.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2019, 31, 4, pp Article 49
Abstract

In the past, bovine herpesvirus 4 (BoHV-4) has been suggested to be associated with metritis and endometritis. However, not many field studies investigated the association between BoHV-4 and subclinical endometritis (SCE). In the present study, the association between the intrauterine presence of...

Author(s)
Yang Bo; Pascottini, O. B.; Xie JieXiong; Desmarets, L.; Cui TingTing; Opsomer, G.; Nauwynck, H. J.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Microbiology, 2019, 229, pp 130-137

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