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AbstractFull Text

The objective of the study was to evaluate the use of estrous control treatments, determining genital status by ultrasonography, efficiency of detection and distribution of heat, and pregnancy in artificially inseminated cows. The work was carried out with 380 females. The cows was classified by...

Author(s)
Konrad, J. L.; Crudeli, G. A.
Publisher
Facultad de Ciencias Veterinarias de la Universidad Nacional del Nordeste (UNNE), Corrientes, Argentina
Citation
Revista Veterinaria, 2018, 29, 1, pp 18-21
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
AbstractFull Text

The effects of three insemination protocols were evaluated on the reproductive performance in 249 British and crosses beef heifers, mated to the 14 or 27 months of age. Sixty two heifers with 27 months were submitted to FTAI after the treatment OvSynch; 61 heifers with 27 months and 32 heifers with ...

Author(s)
Gottschall, C.; Bittencourt, H. R.; Mattos, R. C.; Gregory, R. M.
Publisher
Universidade Luterana do Brasil, Canoas, Brazil
Citation
Veterinaria em foco, 2018, 15, 2, pp 3-18
AbstractFull Text

The future of beef cattle and consequently its profitability are tied to the optimization of land use, since in many states its area has been occupied by agriculture. One of the alternatives is the use of breeding biotechnologies, such as fixed-time artificial insemination [FTAI], which allows the ...

Author(s)
Santos, G. dos; Tortorella, R. D.; Fausto, D.
Publisher
Instituto Pecege, Piracicaba, Brazil
Citation
Revista iPecege, 2018, 4, 1, pp 28-32
Abstract

A number of reproductive biotechnologies are currently available to multiply offspring from high genetic merit animals to enhance reproductive efficiency and profitability both in dairy and beef herds. Some of these technologies such as fixed time artificial insemination (FTAI), when correctly...

Author(s)
Baruselli, P. S.; Souza, A. H. de; SáFilho, M. F. de; Marques, M. O.; Sales, J. N. de S.
Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Animal Reproduction (Belo Horizonte), 2018, 15, 3, pp 247-255
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

This article highlights the current breeding programmes used by beef farmers in Ireland and other European countries (Belgium, France, Italy, and UK) as well as in South Africa and USA to produce high-quality stock. One of the breeding method used is by artificial insemination, however, there are...

Author(s)
Randi, E.; Lonergan, P.
Publisher
Veterinary Ireland, Dublin, Irish Republic
Citation
Veterinary Ireland Journal, 2019, 9, 6, pp 322-327
Abstract

The objective of this study was to compare conception rates of female beef cattle inseminated at a fixed-time with either conventional (CON) or SexedUltraTM sex-sorted (SU) semen. Treatments included CON or SU with two sires represented within each treatment. Cows (n=316) and heifers (n=78) from...

Author(s)
Crites, B. R.; Vishwanath, R.; Arnett, A. M.; Bridges, P. J.; Burris, W. R.; McLeod, K. R.; Anderson, L. H.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 118, pp 126-129
Abstract

This study aimed to clarify the feasibility of a novel timed artificial insemination (TAI) protocol using ultrasonography, and to determine the associations between the ovarian component and fertility. In Experiment 1, 272 Japanese Black cows with a corpus luteum (CL) ≥18 mm in diameter were...

Author(s)
Funakura, H.; Shiki, A.; Tsubakishita, Y.; Mido, S.; Katamoto, H.; Kitahara, G.; Osawa, T.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2018, 64, 2, pp 109-115
AbstractFull Text

The objective of the present work was to evaluate the effect of treatment of estrus cycle control (Co-Synch 5 days; J-Synch or Device by 7 days), reproductive status (cyclic or anestrus) and equine chorionic gonadotropin (eCG) on pregnancy rate after fixed time artificial insemination (FTAI). Angus ...

Author(s)
Erbiti, F.; Lissarrague, C.; Cabodevila, J.; Callejas, S. S.
Publisher
Facultad de Ciencias Veterinarias de la Universidad Nacional del Nordeste (UNNE), Corrientes, Argentina
Citation
Revista Veterinaria, 2018, 29, 1, pp 35-39

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