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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
AbstractFull Text

In our previous Genome-wise Association Study we found that Cystic Fibrosis Transmembrane Conductance Regulator gene (CFTR) is a candidate gene for sperm motility in fresh semen of Holstein-Friesian bulls. Since in cows thawed semen is commonly used for the artificial insemination (AI) we have...

Author(s)
Kaminski, S.; Hering, D. M.; Kordan, W.; Lecewicz, M.
Publisher
Polish Academy of Sciences, Committee of Veterinary Sciences, Olsztyn-Kortowo II, Poland
Citation
Polish Journal of Veterinary Sciences, 2019, 22, 2, pp 221-225
Abstract

The number of doses per pregnancy gives an indication of the fertility of the cow, the quality of semen and insemination. Therefore, the goal of this study was to investigate the relationship between the physical and morphological assessment of semen cryopreserved in Central with the number of...

Author(s)
Guerra Neto, J. de O.; Chacur, M. G. M.; Caldato, F. A.; Silva, A. A. da; Castilho, C.
Publisher
Universidade do Oeste Paulista (UNOESTE), Sao Paulo, Brazil
Citation
Colloquium Agrariae, 2012, 8, 2, pp 57-64
Abstract

Sperm quality is evaluated for the calculation of sperm dosage in artificial reproductive programs. The most common parameter used is motility, but morphology has a higher potential as a predictor of genetic quality. Morphometry calculations from CASA-Morph technology improve morphological...

Author(s)
Valverde, A.; Arenán, H.; Sancho, M.; Contell, J.; Yániz, J.; Fernández, A.; Soler, C.
Publisher
Medknow Publications, Mumbai, India
Citation
Asian Journal of Andrology, 2016, 18, 6, pp 851-857
AbstractFull Text

In order to evaluate the results of reproductive cows and heifers, different parameters of fertility are used, such as the service period, insemination index, intercalving time and others, and of the breeding bulls the values obtained through non-return. An ejaculate is taken up for further...

Author(s)
Prka, I.; Vuković, D.; Perković, S.
Publisher
Veterinarska Komora Srbije (Veterinary Chamber of Serbia), Beograd, Serbia
Citation
Veterinarski Glasnik, 2012, 66, 1/2, pp 27-40
Abstract

Two experiments were conducted to compare the effectiveness of different extenders conventionally used for semen cryopreservation to maintain the viability and fertility of cooled bull semen. In Experiment 1, sperm samples obtained from 20 Nellore bulls were preserved at 5°C for 48 h using two...

Author(s)
Crespilho, A. M.; Nichi, M.; Guasti, P. N.; Freitas-Dell'Aqua, C. P.; SáFilho, M. F.; Maziero, R. R.; Dell'Aqua Júnior, J. A.; Papa, F. O.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2014, 146, 3/4, pp 126-133
Abstract

Semen samples collected from each of 4 triple crossbred bulls (2 each of Holstein × Swiss Brown × Hariana and Holstein × Jersey × Hariana) were used for artificial insemination in 6 superovulated crossbred cows, and >60 cows for each bull in field trials after laboratory evaluation. These studies...

Author(s)
Das, H. N.; Ansari, M. R.; Verma, R. P.; Majundar, A. C.
Citation
Indian Journal of Animal Reproduction, 1998, 19, 2, pp 140-142
Abstract

The effects of exogenously administered vitamin A on spermatological parameters of semen and on fertility of cows inseminated artificially with this semen were investigated. Five Holstein bulls and 200 Holstein cows were used. Semen samples were taken twice a week and each time 2 consecutive...

Author(s)
Gür, S.; Demİrcİ, E.
Citation
Sağlık Bilimleri Dergisi (Veteriner), Firat Üniversitesi, 1998, 12, 2, pp 163-174
Abstract

4505 cows were inseminated with semen from Normande, French Holstein or German Holstein bulls, diluted with Biociphos diluent (in which egg yolk is replaced by soya milk and lecithin), or with Tris or laiciphos diluents. Sperm motility was significantly higher for up to 24 h after dilution for...

Author(s)
Müller-Schlösser, F.
Citation
Tierzüchter, 1995, No. 8, pp 30-31
Abstract

Samples of oestrous mucus were collected from the uteri of 67 nondescript cows. Based on rectal palpation, the cows were classified as having 1st-, 2nd- and 3rd-degree uterine tone. For mucus from cows with the 3 levels of uterine tone resp., the sperm penetration rate averaged 37.5±1.67, 48.7±1.31 ...

Author(s)
Kumar, Y.; Sinha, S. N.; Akhtar, M. H.
Citation
British Veterinary Journal, 1983, 139, 5, pp 452-455

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