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Abstract

The objective of this study was to clarify the effects of a second protocol of ovulation synchronisation starting on day 26 after timed artificial insemination on ovarian profile and days open in dairy cows diagnosed as nonpregnant. Ninety-four Holstein-Friesian cows received intramuscular...

Author(s)
Osawa, T.; Honjou, S.; Nitta, H.; Uchiza, M.; Tameoka, N.; Moro, Y.; Izaike, Y.
Publisher
Society for Reproduction and Development (, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2009, 55, 2, pp 163-169
Abstract

The objectives were to determine the effect of ovsynch plus postbreeding infusion treatment combined with fixed time AI on pregnancy rate in healthy Holstein cows. A total of 36 cows ageing between three and eight were used. Cows were randomly assigned to one of three treatment groups. Cows (n=12)...

Author(s)
Yİldİz, A.
Publisher
Medwell Online, Faisalabad, Pakistan
Citation
Journal of Animal and Veterinary Advances, 2010, 9, 9, pp 1345-1350
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

The objective of the study was to determine the efficiency of ovsynch (OV) versus presynch-ovsynch (P-OV) protocol for synchronization of ovulation and timed artificial insemination (TAI) in female buffaloes. The OV group (n=40) received gonadotrophin-releasing hormone (GnRH) on day 0 (random day...

Author(s)
Oropeza, A. J.; Rojas, Á. F.; Velazquez, M. A.; Muro, J. D.; Márquez, Y. C.; Vilanova, L. T.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 6, pp 1149-1154
Abstract

Pregnancy rates of Nelore females inseminated with male-sexed semen and conventional semen from the same bulls were evaluated. The females included 433 heifers (2 years old) and 230 non-suckling cows, totaling 663 animals. Average body condition score was 3.5 (1-5 scale). Estrus was induced with...

Author(s)
Dominguez, J. H. E.; Costa, D. S.; Centurion, V. J.; Faria, F. J. C.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2011, 129, 3/4, pp 127-131
Abstract

The study was aimed at induction/synchronization of estrus in postpartum anestrous Kankrej cows of zebu cattle maintained at an organized farm. The study included use of different hormone protocols, viz., Ovsynch, CIDR (controlled internal drug release), Ovsynch plus CIDR, and Heatsynch with...

Author(s)
Bhoraniya, H. L.; Dhami, A. J.; Mehrajuddin Naikoo; Parmar, B. C.; Sarvaiya, N. P.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2012, 44, 6, pp 1191-1197
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

Poor estrus expression and the difficulty encountered in predicting the time of ovulation compromise the reproductive efficiency of Murrah buffalo cows. Synchronization of ovulation and timed artificial insemination are able to precisely control the time of ovulation and thus avoid the need for...

Author(s)
Mirmahmoudi, R.; Souri, M.; Prakash, B. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2014, 82, 7, pp 1012-1020
Abstract

The aim of this study was to test the effect of expression of estrus at artificial insemination (AI) on endometrium, conceptus, and CL gene expression of beef cows. Thirty-six multiparous nonlactating Nelore cows were enrolled on an estradiol- and progesterone (P4)-based timed AI protocol (AI=Day...

Author(s)
Davoodi, S.; Cooke, R. F.; Fernandes, A. C. C.; Cappellozza, B. I.; Vasconcelos, J. L. M.; Cerri, R. L. A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2016, 85, 4, pp 645-655
Abstract

The goals of this study were to assess whether the injection of 1 mg of estradiol cypionate (ECP) at 13 days after service of artificial insemination (AI) increases fertility in the study subject and if the same dose injected in the near estrus (20±1 days) after artificial insemination services...

Author(s)
Leyva, C.; Aguilar, D.; Morales, J. L.; Pérez-López, S.; Véliz, F. G.; Soto-Domínguez, A.; Morán Martínez, J.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2016, 44, 1, pp 24-26

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