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Abstract

Due to the increasing use of in vitro embryo production (IVEP) and the importance of crossbreeding for beef production, pregnancy rates of Nelore recipients were evaluated following Fixed Time Embryo Transfer with fresh or vitrified IVEP embryos produced with Y-sorted sperm of Angus bulls (B....

Author(s)
Bezerra, A. de O.; Nicacio, A. C.; Menezes, G. R. de O.; Gomes, R. da C.; Silva, L. O. C. da; Rocha-Frigoni, N. A. de S.; Mingoti, G. Z.; Leão, B. C. da S.; Costa e Silva, E. V. da; Nogueira, É.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2019, 208, pp 106101
Abstract

Background: Subfertility decreases the efficiency of the cattle industry because artificial insemination employs spermatozoa from a single bull to inseminate thousands of cows. Variation in bull fertility has been demonstrated even among those animals exhibiting normal sperm numbers, motility, and...

Author(s)
Menezes, E. B.; Velho, A. L. C.; Santos, F.; Dinh, T.; Kaya, A.; Topper, E.; Moura, A. A.; Memili, E.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Genomics, 2019, 20, 714, pp (18 September 2019)
Abstract

In the quest for predicting fertility of an individual, enhancing semen handling, dilution and storage protocols, and understanding the impact of environment and, andrologists have changed their approaches to semen analysis. The technologies used today are fast developing and readily implemented in ...

Author(s)
Boe-Hansen, G. B.; Satake, N.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 137, pp 93-103
Abstract

The research work was carried out to evaluate the effects of age and breed on semen quality of beef bull sires. The experimental site was located at Singosari National Artificial Insemination Center, Malang, Indonesia. A total of 180 ejaculate semen which were collected from 9 beef bull sires (3...

Author(s)
Isnaini, N.; Wahjuningsih, S.; Ma'ruf, A.; Witayanto, D. A.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2019, 31, 5, pp Article 78
Abstract

Background: The application of cryopreservation and artificial insemination technology have contributed to the advancement of animal reproduction. However, a substantial proportion of spermatozoa undergoes alterations and loses their fertility during cryopreservation, rendering the frozen-thawed...

Author(s)
Nagata, M. B.; Egashira, J.; Katafuchi, N.; Endo, K.; Ogata, K.; Yamanaka, K.; Yamanouchi, T.; Matsuda, H.; Hashiyada, Y.; Yamashita, K.
Publisher
BioMed Central Ltd, London, UK
Citation
Journal of Animal Science and Biotechnology, 2019, 10, 91, pp (15 November 2019)
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
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 technology available to assess sperm population characteristics has advanced greatly in recent years. Large artificial insemination (AI) organizations that sell bovine semen utilize many of these technologies not only for novel research purposes, but also to make decisions regarding whether to...

Author(s)
Harstine, B. R.; Utt, M. D.; DeJarnette, J. M.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, s1, pp s63-s74
Abstract

Whole genome sequencing has identified millions of bovine genetic variants; however, there is currently little understanding about which variants affect male fertility. It is imperative that we begin to link detrimental genetic variants to sperm phenotypes via the analysis of semen samples and...

Author(s)
Taylor, J. F.; Schnabel, R. D.; Sutovsky, P.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2018, 194, pp 57-62
Abstract

In the current era of genomic selection, there is an increased demand to collect semen from genomically selected sires at a young age. The objective of this study was to assess the effect of bull age, ejaculate number, and season of collection on semen production (ejaculate volume, sperm...

Author(s)
Murphy, E. M.; Kelly, A. K.; O'Meara, C.; Eivers, B.; Lonergan, P.; Fair, S.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 6, pp 2408-2418

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