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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

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

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

In cattle artificial insemination plays not only a vital role in the successful establishment of pregnancy, which is a prerequisite for initiation of the subsequent lactation, but also in accelerating genetic improvement and facilitating the distribution of semen from genetically elite sires. The...

Author(s)
Diskin, M. G.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, s1, pp s75-s84
Abstract

The use of artificial insemination in cows makes possible breeding of superior animals, which are known as enhancer individuals. However, the major limitation for its expansion has been the necessity for estrus detection. Thus, programs of fixed time artificial insemination (FTAI), without the...

Author(s)
Cavalieri, F. L. B.; Colombo, A. H. B.; Andreazzi, M. A.; Gonçalves, É. A.
Publisher
Universidade Federal do Paraná, UFPR, Palotina, Brazil
Citation
Archives of Veterinary Science, 2016, 21, 1, pp 25-31
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

The aim of this study was to quantify the effects of progesterone profile features and other cow-level factors on insemination success to provide a real-time predictor equation of probability of insemination success. Progesterone profiles from 26 dairy herds were analyzed and the effects of profile ...

Author(s)
Blavy, P.; Friggens, N. C.; Nielsen, K. R.; Christensen, J. M.; Derks, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 2, pp 1648-1660
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

The objective of this study was to determine the relative importance and contribution of several physiological factors as predictors of pregnancy risk in an Ovsynch (GnRH-1-7 d-PGF-56 h-GnRH-2-16 h-artificial insemination) timed artificial insemination program: (1) age of the corpus luteum (CL;...

Author(s)
Stevenson, J. S.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 12, pp 10077-10092
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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