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Animal Science Database

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Abstract

Considering that there is limited information about the preovulatory LH surge in Zebu cattle (Bos indicus), the purpose of the present work was to assess the LH surge in Nelore cows during the estrous cycle and after ovarian superestimulation of ovarian follicular development with FSH. This...

Author(s)
Monteiro, F. M.; Melo, D. S.; Ferreira, M. M. G.; Carvalho, L. M.; Sartoreli e Sartoreli, E.; Ederhardt, B. G.; Nogueira, G. de P.; Barros, C. M.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2009, 110, 1/2, pp 128-138
Abstract

The primary objective of this study was to determine whether a single measurement of intravaginal electrical resistance (VER), using the commercially available Ovatec® probe, can discriminate between dioestrus and oestrus in Bos indicus females, which had been treated to synchronize oestrus. Santa...

Author(s)
Hockey, C. D.; Norman, S. T.; Morton, J. M.; Boothby, D.; Phillips, N. J.; McGowan, M. R.
Publisher
Blackwell Publishing, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2010, 45, 4, pp 629-636
Abstract

Reyna Creole cattle originated from Bos taurus cattle brought to Latin America during the Spanish colonization in the fifteenth century and are the only remaining local breed in Nicaragua. However, the current genetic status of this breed is unknown. Therefore, the population structure of three...

Author(s)
Corrales, R.; Näsholm, A.; Malmfors, B.; Philipsson, J.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 7, pp 1427-1434
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

The aim of this study was to compare four methods of estrus resynchronization performed 23 days after timed artificial insemination (TAI) plus estrus observation in Bos indicus cows. Eight hundred fourteen lactating Nelore cows were submitted to TAI and then randomly assigned to one of the five...

Author(s)
Campos, J. T.; Marinho, L. S. R.; Lunardelli, P. A.; Morotti, F.; Seneda, M. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2013, 80, 6, pp 619-623
Abstract

Feet and leg problems have a major effect on the well-being and lifespan of the dairy cow and thus are economically important to the dairy farmer. Apart from approaches using genetic selection for classical traits from conformation scoring, attempts for genetic improvement can be based either on...

Author(s)
Swalve, H. H.; Floren, C.; Wensch-Dorendorf, M.; Schöpke, K.; Pijl, R.; Wimmers, K.; Brenig, B.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 1, pp 507-519
Abstract

The objective of this study was to investigate the effects of eCG and temporary calf removal (TCR) associated with progesterone (P4) treatment on the dynamics of follicular growth, CL size, and P4 concentrations in cyclic (n=36) and anestrous (n=30) Nelore cows. Cyclic (C) and anestrous (A) cows...

Author(s)
Barreiros, T. R. R.; Blaschi, W.; Santos, G. M. G.; Morotti, F.; Andrade, E. R.; Baruselli, P. S.; Seneda, M. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2014, 81, 5, pp 651-656
Abstract

The objective of this experiment was to evaluate the effects of replacing eCG with FSH or FSH/LH on the diameter of ovulatory follicles (DOF) and the pregnancy rates (PR) of lactating Bos indicus cows subjected to a synchronization of ovulation protocol and fixed-time artificial insemination (FTAI) ...

Author(s)
Nogueira, É.; Batista, D. S. do N.; Costa Filho, L. C. C. da; Dias, A. M.; Silva, J. C. B.; Ítavo, L. C. V.
Publisher
Sociedade Brasileira de Zootecnia, Viçosa, Brazil
Citation
Revista Brasileira de Zootecnia, 2014, 43, 7, pp 358-362

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