Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows

The objective was to evaluate the effect of follicle stimulating hormone (FSH) and bovine somatotropin (bST) on follicular dynamics in lactating and non-lactating dairy cows. A 2×2 factorial ANOVA was performed, considering lactation status and the hormone used as factors. A total of 20 cows were ad...

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Autores principales: Payano, I. U., Eulogio, C. Q., Gomez, E. A., Villar, F. A., Fermín, J. U., Saavedra, E., Mauricio-Ramos, Y., Sarapura, V., Ninahuanca, J.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Nordeste 2025
Materias:
Follicle stimulant
hormone treatments
follicle size
in vitro
Foliculoestimulante
tratamientos hormonales
tamaño folícular
Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/8159
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-8159
record_format ojs
spelling I48-R154-article-81592025-04-01T14:28:37Z Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows Somatotropina vs. hormona foliculoestimulante: recuento folicular antral en vacas lactantes y no lactantes Payano, I. U. Eulogio, C. Q. Gomez, E. A. Villar, F. A. Fermín, J. U. Saavedra, E. Mauricio-Ramos, Y. Sarapura, V. Ninahuanca, J. Follicle stimulant hormone treatments follicle size in vitro Foliculoestimulante tratamientos hormonales tamaño folícular in vitro The objective was to evaluate the effect of follicle stimulating hormone (FSH) and bovine somatotropin (bST) on follicular dynamics in lactating and non-lactating dairy cows. A 2×2 factorial ANOVA was performed, considering lactation status and the hormone used as factors. A total of 20 cows were administered, 10 lactating (5 treated with FSH and 5 with bST) and 10 non-lactating (5 treated with FSH and 5 with bST). In lactating cows, bST treatment resulted in a significantly higher total follicle count (16.4 ± 2.3) compared to FSH (11.8 ± 1.92), whereas no significant differences were observed in non-lactating cows (p>0.05). Regarding the number of follicles measuring 2-4 mm, significant differences (p<0.05) were found in lactating cows, with bST resulting in a higher count (12 ± 1.41) compared to FSH (6.4 ± 1.34). For follicles measuring 4-8 mm, no significant differences were observed between groups (p>0.05). In terms of viability, bST showed better results, with significant differences (p<0.05) compared to the FSH group in both lactating and non-lactating cows. These findings highlight the need to adjust hormonal protocols based on the cows’ physiological state to maximize viable oocyte production, which is crucial for assisted reproduction and improving reproductive efficiency in the livestock industry. El objetivo fue evaluar el efecto de la hormona foliculoestimulante (FSH) y la somatotropina bovina (bST) sobre la dinámica folicular en vacas lecheras lactantes y no lactantes. Se realizó un ANOVA factorial 2x2, considerando el estado de lactancia y la hormona utilizada como factores. Se utilizaron 20 vacas, 10 lactantes (5 con FSH y 5 con bST) y 10 no lactantes (5 con FSH y 5 con bST). En vacas lactantes, el tratamiento con bST mostró un recuento total de folículos significativamente mayor (16,4 ± 2,3) frente a FSH (11,8 ± 1,92), mientras que en no lactantes no hubo diferencias significativas (p>0,05). En número de folículos de tamaño 2-4 mm, se evidenció diferencias estadísticas (p<0,05) en vacas lactantes, siendo la bST superior a la FSH con 12 ± 1,41 folículos y 6,4 ± 1,34 folículos, respectivamente. Para el número de folículos de tamaño 4-8 mm, no hubo diferencias significativas entre los grupos (p>0,05). En caso de viabilidad la bST mostró mejores resultados encontrando diferencias estadísticas (p<0,05) frente al grupo de FSH, tanto para vacas lactantes como no lactantes. Estos resultados subrayan la necesidad de ajustar los protocolos hormonales basados en el estado fisiológico de las vacas para maximizar la producción de ovocitos viables, lo cual es crucial para la reproducción asistida y para mejorar la eficiencia reproductiva en la industria ganadera. Universidad Nacional del Nordeste 2025-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/8159 10.30972/vet.3618159 Revista Veterinaria; Vol. 36 Núm. 1 (2025); 1-6 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/8159/7761 https://creativecommons.org/licenses/by-nc/4.0
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Follicle stimulant
hormone treatments
follicle size
in vitro
Foliculoestimulante
tratamientos hormonales
tamaño folícular
in vitro
spellingShingle Follicle stimulant
hormone treatments
follicle size
in vitro
Foliculoestimulante
tratamientos hormonales
tamaño folícular
in vitro
Payano, I. U.
Eulogio, C. Q.
Gomez, E. A.
Villar, F. A.
Fermín, J. U.
Saavedra, E.
Mauricio-Ramos, Y.
Sarapura, V.
Ninahuanca, J.
Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
topic_facet Follicle stimulant
hormone treatments
follicle size
in vitro
Foliculoestimulante
tratamientos hormonales
tamaño folícular
in vitro
author Payano, I. U.
Eulogio, C. Q.
Gomez, E. A.
Villar, F. A.
Fermín, J. U.
Saavedra, E.
Mauricio-Ramos, Y.
Sarapura, V.
Ninahuanca, J.
author_facet Payano, I. U.
Eulogio, C. Q.
Gomez, E. A.
Villar, F. A.
Fermín, J. U.
Saavedra, E.
Mauricio-Ramos, Y.
Sarapura, V.
Ninahuanca, J.
author_sort Payano, I. U.
title Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
title_short Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
title_full Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
title_fullStr Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
title_full_unstemmed Somatotropin vs. follicle-stimulating hormone: Antral follicle count in lactating and non-lactating cows
title_sort somatotropin vs. follicle-stimulating hormone: antral follicle count in lactating and non-lactating cows
description The objective was to evaluate the effect of follicle stimulating hormone (FSH) and bovine somatotropin (bST) on follicular dynamics in lactating and non-lactating dairy cows. A 2×2 factorial ANOVA was performed, considering lactation status and the hormone used as factors. A total of 20 cows were administered, 10 lactating (5 treated with FSH and 5 with bST) and 10 non-lactating (5 treated with FSH and 5 with bST). In lactating cows, bST treatment resulted in a significantly higher total follicle count (16.4 ± 2.3) compared to FSH (11.8 ± 1.92), whereas no significant differences were observed in non-lactating cows (p>0.05). Regarding the number of follicles measuring 2-4 mm, significant differences (p<0.05) were found in lactating cows, with bST resulting in a higher count (12 ± 1.41) compared to FSH (6.4 ± 1.34). For follicles measuring 4-8 mm, no significant differences were observed between groups (p>0.05). In terms of viability, bST showed better results, with significant differences (p<0.05) compared to the FSH group in both lactating and non-lactating cows. These findings highlight the need to adjust hormonal protocols based on the cows’ physiological state to maximize viable oocyte production, which is crucial for assisted reproduction and improving reproductive efficiency in the livestock industry.
publisher Universidad Nacional del Nordeste
publishDate 2025
url https://revistas.unne.edu.ar/index.php/vet/article/view/8159
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first_indexed 2025-05-17T05:10:43Z
last_indexed 2025-05-17T05:10:43Z
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