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Abstract

Two experiments were designed to evaluate the effect of different insemination times (12 and 24 h or 18 and 30 h) and different types of semen (sex-sorted or non-sorted sperm) on embryo production in Nelore (Bos indicus) and Holstein (Bos taurus) superstimulated donors. In the first experiment,...

Author(s)
Soares, J. G.; Martins, C. M.; Carvalho, N. A. T.; Nicacio, A. C.; Abreu-Silva, A. L.; Campos Filho, E. P.; Torres Júnior, J. R. S.; SáFilho, M. F.; Baruselli, P. S.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2011, 127, 3/4, pp 148-153
Abstract

This study was carried out from October 2007 to March 2009 on 237 Gobra zebus after an insemination campaign in the area of Thies (Senegal) where it aimed at evaluating the performance of Gobra females and their products after artificial insemination. The rate of gestation was 44.3% (n=105) with an ...

Author(s)
Kouamo, J.; Alloya, S.; Habumuremyi, S.; Ouedraogo, G. A.; Sawadogo, G. J.
Publisher
AGRI-Overseas, Brussels, Belgium
Citation
Tropicultura, 2014, 32, 2, pp 80-89
Abstract

For this study, we used the results of sire fertility (SF) measured on a monthly basis by the ratio between the number of pregnant cows and the number of inseminations, from a total of 905 140 inseminations carried out in Cuba between 1994 and 2003. These artificial inseminations were made using...

Author(s)
Menéndez Buxadera, A.; Ayrado, Y.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2013, 7, 5, pp 721-728
Abstract

Facing growth in demand, dairy production in peri-urban areas of developing countries is changing rapidly. To characterise this development around Bamako (Mali), this study establishes a typology of dairy production systems with a special focus on animal genetic resources. The survey included 52...

Author(s)
Toure, A.; Moula, N.; Kouriba, A.; Traore, B.; Tindano, K.; Leroy, P.; Antoine-Moussiaux, N.
Publisher
Kassel University Press, Kassel, Germany
Citation
Journal of Agriculture and Rural Development in the Tropics and Subtropics, 2015, 116, 1, pp 37-47
Abstract

The Girolando breed is used in pasture-based dairy production systems in Brazil to associate the high production of Bos taurus to the rusticity and thermal adaptation of Bos indicus. This study was designed to evaluate the physiological response to a gonadotropin-releasing hormone...

Author(s)
Bilego, U. O.; Santos, F. C.; Porto, R. N. G.; Pires, B. C.; Oliveira Filho, B. D.; Viu, M. A. O.; Gambarini, M. L.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2013, 45, 7, pp 1461-1467
Abstract

Data on 704 inseminations of 135 Holstein × zebu cows in Mexico were analysed. Conception rate was significantly affected by inseminator (ranging from 46.36 to 61.81%), insemination site (59.56% for insemination at the entrance to the uterus vs. 33.3% for vaginal insemination), type of cervical...

Author(s)
Basuro Camberos, H.; Martínez Aburto, A.; Gutiérrez Vivanco, I.
Citation
Veterinaria México, 1997, 28, 2, pp 109-116
Abstract

Low serum cholesterol, which shows a direct relationship to uterine infections, can decrease fertility in dairy cows. A study in 97 Zebu × Holstein cows showed that intrauterine infusion with 2 g ampicillin immediately after artificial insemination increased fertility (P≤0.05) in...

Author(s)
Oliveira, M. A. L.; Basileu de Oliveira, P.; Fernandes de Lima, P.; Guerra, M. M. P.; Barreto, M. B. P.; Firmino Neto, J. E.
Citation
Pesquisa Agropecuária Brasileira, 1997, 32, 5, pp 549-553
Abstract

Optimum replacement and insemination policies were estimated, using dynamic programming, for F1 cows (Holstein × zebu) for a 15-year planning horizon, taking into account the production and market circumstances of the southeastern region of Brazil. Optimum average herd life was 75.6 months,...

Author(s)
Cardoso, V. L.; Nogueira, J. R.; Arendonk, J. A. M. van
Citation
Livestock Production Science, 1999, 58, 2, pp 95-105
Abstract

This discussion covers the bovine population, milk production scenario, draught animal power, efforts of the Indian government to promote dairying, breeding policy, new crossbred strains and future approaches. It is suggested that the number of artificial insemination stations should be increased...

Author(s)
Gandhi, R. S.; Avtar Singh; Joshi, B. K.
Citation
Indian Dairyman, 1998, 50, 10, pp 35-43
Abstract

In 385 bulls (3/8 zebu and 5/8 Holstein, Brown Swiss or Simmental), body weight at birth and at 7, 12, 18, 24 and 30 months of age averaged 36.4, 173.4, 233.4 and 314.7 and 565.0 kg respectively. For 92 ejaculates, volume averaged 6.1 ml, sperm forward motility 68.6 and sperm concentration 83.5 ×...

Author(s)
Hector, C. R.; Oscar, G. C. M.
Publisher
Swedish University of Agricultural Sciences, Uppsala, Sweden
Citation
Proceedings of the 4th SIPAR follow-up seminar on animal reproduction and biotechnology for Latin America, Belem-Para-Brazil, 8-20 February, 1998: Volume 2., 1998, pp 34-38

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