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| Registros recuperados : 6 | |
| 1. |  | PICCINI, C.; FRAGA, M. Planeta bacteriano. In: TASSINO, B.; SILVA, A. (Ed.). Unidad en la diversidad: biología. Montevideo, UY: UdelaR. Facultad de Ciencias, DIRAC, 2010. p. 171-[183].| Biblioteca(s): INIA La Estanzuela. |
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| 4. | | LOZANO, J.; FERNÁNDEZ-CIGANDA, S.; FABIUS, S.; PICCINI, C.; SCORZA, C.; ZUNINO, P. Efecto tipo-antidepresivo inducido por el tratamiento crónico de una cepa del grupo lactobacillus plantarum en ratas y asociación con la microbiota intestinal. 395. (resúmen) Conferencia 21. Mesa Área Biotecnología. Organiza SUM (Sociedad Uruguaya de Microbiología). In: Physiological Mini Reviews, 2022, volume 15, Special Issue: III (3er) Congreso Nacional de Biociencias Octubre 2022, Montevideo, Uruguay. p.86. Resumen publicado en las jornadas de BIOCIENCIAS: II Jornadas Binacionales Argentina-Uruguay; III Congreso Nacional 2022 "Ciencia para el desarrollo sustentable".| Biblioteca(s): INIA Las Brujas. |
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| 5. | | FABIUS, S.; URBANAVICIUS, J.; FERNÁNDEZ-CIGANDA, S.; PRIETO, J.P.; LOZANO, J.; PICCINI, C.; ZUNINO, P.; SCORZA, C. Efecto del pretratamiento oral con Lactobacillus SPP. en la sensibilización locomotora inducida por cocaína y su influencia en la microbiota intestinal. [resumen] Conferencia 3. Mesa Sociedad de Neurociencias del Uruguay. Mesa VI. Presentaciones orales seleccionadas de estudiantes. In: Physiological Mini Reviews, 2022, volume 15, Special Issue: III (3er) Congreso Nacional de Biociencias Octubre 2022, Montevideo, Uruguay. p.38. Resumen publicado en las jornadas de BIOCIENCIAS: II Jornadas Binacionales Argentina-Uruguay; III Congreso Nacional 2022 "Ciencia para el desarrollo sustentable".| Biblioteca(s): INIA Las Brujas. |
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| 6. | | KRUK, C.; SEGURA, A.; PIÑEIRO, G.; BALDASSINI, P.; PÉREZ-BECOÑA, L.; GARCÍA-RODRÍGUEZ, F.; PERERA, G.; PICCINI, C. Rise of toxic cyanobacterial blooms is promoted by agricultural intensification in the basin of a large subtropical river of South America. Global Change Biology, 2023, volume 29, issue 7, pp. 1774-1790. doi: https://doi.org/10.1111/gcb.16587 Article history: Received 6 July 2022, Accepted 27 November 2022, First published online 06 January 2023. -- Corresponde author: Kruk, C.; Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Udelar, Uruguay;...| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 6 | |
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 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
25/09/2020 |
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Actualizado : |
25/09/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
CUNHA, F.; CUSHMAN, R.A.; SANTA CRUZ, R.; DE NAVA, G.; VIÑOLES, C. |
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Afiliación : |
FERNANDO CUNHA, Masters Student, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay. Liberal profession vet, Uruguay; ROBERT A. CUSHMAN, USDA, ARS, U.S. Meat Animal Research Center, Clay Center, NE, USA; RODRIGO SANTA CRUZ, Polo Agroforestal, Estación Experimental Bernardo Rosengurtt, Facultad de Agronomía, Universidad de la República, Cerro Largo, Uruguay; GUILLERMO DE NAVA, Liberal profession vet, Uruguay; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Polo Agroforestal, Estación Experimental Bernardo Rosengurtt, Facultad de Agronomía, Universidad de la República, Cerro Largo, Uruguay. |
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Título : |
Antral follicular count has limited impact in the selection of more fertile beef heifers. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Livestock Science, November 2020, Volume 241, Article number 104230. Doi: https://doi.org/10.1016/j.livsci.2020.104230 |
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DOI : |
DOI: 10.1016/j.livsci.2020.104230 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 7 April 2020, Revised 20 July 2020, Accepted 25 August 2020, Available online 26 August 2020. Acknowledgments: This work was supported by the project ?Marcadores de Fertilidad para Ganado de Carne? of the National Institute of Agricultural Research (INIA). This research was partially supported by ARS Research Project 3040-31000-096-00D (RAC). The authors would like to acknowledge Pablo Cuadro from INIA and all the staff of the commercial farm ?Las Grutas?. We would also like to thank Pablo González for his
contribution with statistic. Corresponding author: E-mail address: cvinoles@adinet.com.uy (C. Viñoles). |
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Contenido : |
ABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1
to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM
procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and high), and the interaction as the independent variables. Reproductive tract development was negatively associated to AFC (P>0.0001). There was no interaction between FTAI and AFC (P>0.11). Heifers inseminated at FTAI1 were heavier and taller, had greater deposition of fat and muscle, and conceived earlier than those inseminated at FTAI2 (P<0.05); however, there was no difference in AFC between heifers inseminated in FTAI1 and FTAI2 (15.6 ± 0.4 vs. 16.7 ± 0.9 follicles, respectively; P = 0.3). Furthermore, conception rates did not differ statistically between heifers in FTAI1 and FTAI2 (P = 0.12). Antral follicle count influenced growth and carcass traits (P>0.05) and heifers in the High AFC class conceived approximately 1 week earlier than heifers in the Low and Medium AFC class (P<0.05). We conclude that pubertal heifers have less AFC, thus similar numbers were observed for heifers in both FTAI programs and no differences in pregnancy rate. Antral follicle count may allow for the selection of heifers that conceive earlier, but may result in a lower pregnancy rate. MenosABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1
to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM
procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and ... Presentar Todo |
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Palabras claves : |
ANTRAL FOLLICLE COUNT; BEEF HEIFERS; FIXED TIME ARTIFICIAL INSEMINATION; PUBERTY; REPRODUCCIÓN ANIMAL. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
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001 1061348
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024 7 $aDOI: 10.1016/j.livsci.2020.104230$2DOI
100 1 $aCUNHA, F.
245 $aAntral follicular count has limited impact in the selection of more fertile beef heifers.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 7 April 2020, Revised 20 July 2020, Accepted 25 August 2020, Available online 26 August 2020. Acknowledgments: This work was supported by the project ?Marcadores de Fertilidad para Ganado de Carne? of the National Institute of Agricultural Research (INIA). This research was partially supported by ARS Research Project 3040-31000-096-00D (RAC). The authors would like to acknowledge Pablo Cuadro from INIA and all the staff of the commercial farm ?Las Grutas?. We would also like to thank Pablo González for his contribution with statistic. Corresponding author: E-mail address: cvinoles@adinet.com.uy (C. Viñoles).
520 $aABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1 to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and high), and the interaction as the independent variables. Reproductive tract development was negatively associated to AFC (P>0.0001). There was no interaction between FTAI and AFC (P>0.11). Heifers inseminated at FTAI1 were heavier and taller, had greater deposition of fat and muscle, and conceived earlier than those inseminated at FTAI2 (P<0.05); however, there was no difference in AFC between heifers inseminated in FTAI1 and FTAI2 (15.6 ± 0.4 vs. 16.7 ± 0.9 follicles, respectively; P = 0.3). Furthermore, conception rates did not differ statistically between heifers in FTAI1 and FTAI2 (P = 0.12). Antral follicle count influenced growth and carcass traits (P>0.05) and heifers in the High AFC class conceived approximately 1 week earlier than heifers in the Low and Medium AFC class (P<0.05). We conclude that pubertal heifers have less AFC, thus similar numbers were observed for heifers in both FTAI programs and no differences in pregnancy rate. Antral follicle count may allow for the selection of heifers that conceive earlier, but may result in a lower pregnancy rate.
653 $aANTRAL FOLLICLE COUNT
653 $aBEEF HEIFERS
653 $aFIXED TIME ARTIFICIAL INSEMINATION
653 $aPUBERTY
653 $aREPRODUCCIÓN ANIMAL
700 1 $aCUSHMAN, R.A.
700 1 $aSANTA CRUZ, R.
700 1 $aDE NAVA, G.
700 1 $aVIÑOLES, C.
773 $tLivestock Science, November 2020, Volume 241, Article number 104230. Doi: https://doi.org/10.1016/j.livsci.2020.104230
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