T16 2010 1.indd
The aim of this work was to study the relationship between the duration of the period of time between heat detection and insemination and pregnancy rate in dairy cows and whether, if any, this relationship is affected by the season of the year or the bull. A retrospective observational study on 755...
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| Autores principales: | , , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
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Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
2010
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4989 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4989.dir/4989.PDF |
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I28-R145-HWA_49892024-11-05 T16 2010 1.indd The aim of this work was to study the relationship between the duration of the period of time between heat detection and insemination and pregnancy rate in dairy cows and whether, if any, this relationship is affected by the season of the year or the bull. A retrospective observational study on 755 periods of time elapsed from estrus detection to artifi cial insemination of Holstein dairy cows was performed. Based on the duration of the aforementioned period cows were categorized into the three following groups: <6 hours, 6 to 12 hours and 12 to 18 hours. Independently of the low pregnancy rates observed during the four seasons all comparisons were statistically not signifi cant either among periods within season or between seasons within period or between bulls within period. It is concluded that the effectiveness of artifi cial insemination would not be affected by the time elapsed since heat detection and that this homogeneous behavior described for pregnancy rates is not affected by the season of the year or the source of the semen (bull) used.\n Fil: Marini, P.R. Universidad Nacional de Rosario. Facultad de Ciencias Veterinarias. Cátedra de Producción de Bovinos de Leche. Santa Fe, Argentina Fil: Galassi, I. Universidad Nacional de Rosario. Facultad de Ciencias Veterinarias. Cátedra de Producción de Bovinos de Leche. Santa Fe, Argentina Fil: Di Masso, R.J. Universidad Nacional de Rosario. Facultad de Ciencias Veterinarias. Servicio de Asesoramiento Metodológico. Santa Fe, Argentina Marini, P.R. Galassi, I. Di Masso, R.J. 2010 El objetivo del presente trabajo fue estudiar la relación entre la duración del período transcurrido desde la detección del celo hasta la inseminación y la tasa de preñez en vacas lecheras y si, de existir, dicha relación se ve afectada por la identidad del toro donante del semen y/o por la época del año en que se lleva a cabo la inseminación. En un estudio de carácter retrospectivo se evaluó información disponible sobre 755 períodos celos-servicios correspondientes a 755 vacas lecheras Holando Argentino. En función de esta información las vacas se categorizaron de acuerdo al lapso en horas transcurrido, entre la detección del celo y su inseminación en tres grupos: < 6 horas, 6 a 12 horas y 12 a 18 horas. Las asociaciones entre los efectos período y toro y período y estación del año sobre la proporción de vacas vacías y preñadas resultaron no significativas. Se concluye que, dentro de los límites de los lapsos estudiados, la efectividad de la inseminación no se vería afectada por el tiempo transcurrido desde la detección del celo y que el comportamiento homogéneo de los índices de preñez tampoco se modifi ca como consecuencia de la estación del año ni muestra asociación significativa con la identidad de los toros donantes de semen. application/pdf 1514-6634 (impreso) 1668-3498 (en línea) vacas lecheras reproducción intervalo celo-inseminación porcentaje de preñez dairy cows reproduction estrus-insemination interval conception rate spa Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ InVet, vol. 12, nº1 Relación entre el lapso detección del celo-inseminación y el porcentaje de preñez en vacas lecheras Celo-inseminación y porcentaje de preñez Relationship between the time elapsed from estrus detection to artifi cial insemination and pregnancy in dairy cows info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4989 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4989.dir/4989.PDF |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| language |
Español |
| orig_language_str_mv |
spa |
| topic |
vacas lecheras reproducción intervalo celo-inseminación porcentaje de preñez dairy cows reproduction estrus-insemination interval conception rate |
| spellingShingle |
vacas lecheras reproducción intervalo celo-inseminación porcentaje de preñez dairy cows reproduction estrus-insemination interval conception rate Marini, P.R. Galassi, I. Di Masso, R.J. T16 2010 1.indd |
| topic_facet |
vacas lecheras reproducción intervalo celo-inseminación porcentaje de preñez dairy cows reproduction estrus-insemination interval conception rate |
| description |
The aim of this work was to study the relationship between the duration of the period of time between heat detection and insemination and pregnancy rate in dairy cows and whether, if any, this relationship is affected by the season of the year or the bull. A retrospective observational study on 755 periods of time elapsed from estrus detection to artifi cial insemination of Holstein dairy cows was performed. Based on the duration of the aforementioned period cows were categorized into the three following groups: <6 hours, 6 to 12 hours and 12 to 18 hours. Independently of the low pregnancy rates observed during the four seasons all comparisons were statistically not signifi cant either among periods within season or between seasons within period or between bulls within period. It is concluded that the effectiveness of artifi cial insemination would not be affected by the time elapsed since heat detection and that this homogeneous behavior described for pregnancy rates is not affected by the season of the year or the source of the semen (bull) used.\n |
| format |
Artículo Artículo publishedVersion |
| author |
Marini, P.R. Galassi, I. Di Masso, R.J. |
| author_facet |
Marini, P.R. Galassi, I. Di Masso, R.J. |
| author_sort |
Marini, P.R. |
| title |
T16 2010 1.indd |
| title_short |
T16 2010 1.indd |
| title_full |
T16 2010 1.indd |
| title_fullStr |
T16 2010 1.indd |
| title_full_unstemmed |
T16 2010 1.indd |
| title_sort |
t16 2010 1.indd |
| publisher |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. |
| publishDate |
2010 |
| url |
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4989 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4989.dir/4989.PDF |
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