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Abstract

Artificial insemination (AI) with cooled stallion semen has increased markedly during the last decades in all countries, but fertility is often lower than when fresh semen or natural mating is used. The objective of this study was to examine field data (1634, cycles 523 Standardbred (SB) mares, 575 ...

Author(s)
Kareskoski, M.; Venhoranta, H.; Virtala, A. M.; Katila, T.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 127, pp 7-14
Abstract

To assess the effect of the angiotensin-converting enzyme (ACE) inhibition on the efficiency of the fixed-time artificial insemination (TAI), 69 goats were divided randomly into two groups: enalapril (n=35) and control (n=34). In the experiment, all animals underwent the protocol of fixed-time ...

Author(s)
Fernandes Neto, V. P.; Silva, M. N. N.; Costa, A. S.; Kunkel, D.; Júnior, A. S.; Feitosa, L. C. S.; Muratori, M. C. S.; Costa, A. P. R.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2018, 53, 4, pp 1006-1008
Abstract

This experiment was designed to compare pregnancy rates in postpartum beef cows following split-time (STAI) or fixed-time (FTAI) artificial insemination. Estrus was synchronized for 671 cows at seven locations following administration of the 7-d CO-Synch + CIDR protocol (100 µg GnRH+CIDR insert...

Author(s)
Bishop, B. E.; Thomas, J. M.; Abel, J. M.; Poock, S. E.; Ellersieck, M. R.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 99, pp 48-52
Abstract

Semen deposition through the cervix into the uterus is a difficult technique in ewes and represents the main limiting factor for insemination in this species. The objective of this study was to evaluate the pregnancy rate achieved with a new transcervical insemination method in comparison with...

Author(s)
Casali, R.; Pinczak, A.; Cuadro, F.; Guillen-Muñoz, J. M.; Mezzalira, A.; Menchaca, A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 103, pp 30-35
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

The study aimed to evaluate pregnancy per artificial insemination (P/AI) of cows subjected to synchronization and resynchronization in ovulation protocols using intravaginal progesterone-releasing insert (P4) before pregnancy diagnosis (PD) and the relationship of PR with the diameter of...

Author(s)
Oliveira, D. A. M. de; Kozicki, L. E.; Gaievski, F. R.; Pedrosa, V. B.; Weiss, R. R.; Segui, M. S.; Bergstein-Galan, T. G.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2019, 54, 5, pp 779-785
Abstract

The objective of this study was to determine the estrous response and the moment of ovulation and fertility after a progesterone (P4) priming plus human chorionic gonadotropin (hCG) administration in multiparous and nulliparous goats. Therefore, two experiments were conducted during non-breeding...

Author(s)
Alvarado-Espino, A. S.; Menchaca, A.; Meza-Herrera, C. A.; Mellado, M.; Arellano, F.; Véliz, F.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 127, pp 21-25
Abstract

An equilibration period of approximately 3-4 h prior to semen cryopreservation is standard practice for maintaining membrane integrity and motility of bull sperm. However, a number of studies indicate that an overnight equilibration period prior to freezing results in improved post-thaw semen...

Author(s)
Murphy, E. M.; Eivers, B.; O'Meara, C. M.; Lonergan, P.; Fair, S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 108, pp 217-222
Abstract

Artificial insemination (AI) in domestic animals is an important tool to maximise the use of genetically superior males and thereby insure rapid genetic progress. However, the application of AI in camelids has been hindered by the difficulties involved in collecting, as well as handling the semen...

Author(s)
Skidmore, J. A.; Malo, C. M.; Crichton, E. G.; Morrell, J. M.; Pukazhenthi, B. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 194, pp 11-18
Abstract

An experiment was designed to compare fertility of SexedULTRA 4 MTM sex-sorted semen and conventional, non-sex-sorted semen following either fixed-time artificial insemination (FTAI) or split-time artificial insemination (STAI) of mature suckled beef cows. Units of sex-sorted and conventional semen ...

Author(s)
Thomas, J. M.; Locke, J. W. C.; Bonacker, R. C.; Knickmeyer, E. R.; Wilson, D. J.; Vishwanath, R.; Arnett, A. M.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 123, pp 100-107

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