Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows

The dry period is an important factor influencing profitability, as it does not generate immediate economic return; however, it is necessary to allow the replacement of senescent mammary alveolar cells during this time. The objective of this study was to determine the effect of dry period length on...

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Autores principales: Bruera, Valeria, Frana Bisang, Emanuel Adrián, Marini, Pablo
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Nordeste 2026
Materias:
dry cow
milk yield
fertility
grazing
vaca seca
rendimiento lácteo
fertilidad
pastoreo
Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/9155
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-9155
record_format ojs
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 dry cow
milk yield
fertility
grazing
vaca seca
rendimiento lácteo
fertilidad
pastoreo
spellingShingle dry cow
milk yield
fertility
grazing
vaca seca
rendimiento lácteo
fertilidad
pastoreo
Bruera, Valeria
Frana Bisang, Emanuel Adrián
Marini, Pablo
Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
topic_facet dry cow
milk yield
fertility
grazing
vaca seca
rendimiento lácteo
fertilidad
pastoreo
author Bruera, Valeria
Frana Bisang, Emanuel Adrián
Marini, Pablo
author_facet Bruera, Valeria
Frana Bisang, Emanuel Adrián
Marini, Pablo
author_sort Bruera, Valeria
title Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
title_short Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
title_full Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
title_fullStr Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
title_full_unstemmed Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows
title_sort effects of dry period length on milk production and reproduction in grazing holstein dairy cows
description The dry period is an important factor influencing profitability, as it does not generate immediate economic return; however, it is necessary to allow the replacement of senescent mammary alveolar cells during this time. The objective of this study was to determine the effect of dry period length on productive and reproductive indicators in dairy cows from a pasture-based farm in Iriondo Department, Santa Fe. A total of 227 multiparous Holstein cows (2–8 calvings) were analyzed in an observational study. Three groups were formed according to dry period length: short dry period (SDP): 36 (25–39) days; standard dry period (STDP): 54 (50–59) days; and long dry period (LDP): 92 (84–98) days. The groups were compared for productive and reproductive indicators, including milk yield at 60 days in milk (MY60), milk yield at 305 days in milk (MY305), calving-to-first-service interval (CFSI), days open (DO) and conception rate at first service (CRFS). MY60 differed (p=0.02) by 233 liters between STDP and LDP, with no difference between STDP and SDP (p=0.14). No differences among groups were found for butterfat percentage, whereas crude milk protein differed by 0.3% in the SDP group compared with the others (p=0.003). No differences were observed among groups for CFSI, CRFS or DO. Overall, dry period length did not significantly affect the evaluated productive and reproductive indicators, although cows with a standard dry period showed better performance.
publisher Universidad Nacional del Nordeste
publishDate 2026
url https://revistas.unne.edu.ar/index.php/vet/article/view/9155
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first_indexed 2026-03-17T05:00:57Z
last_indexed 2026-03-17T05:00:57Z
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spelling I48-R154-article-91552026-03-06T23:12:49Z Effects of dry period length on milk production and reproduction in grazing Holstein dairy cows Efectos de la duración del periodo seco sobre la producción de leche y reproducción en vacas lecheras Holstein en sistemas a pastoreo Bruera, Valeria Frana Bisang, Emanuel Adrián Marini, Pablo dry cow milk yield fertility grazing vaca seca rendimiento lácteo fertilidad pastoreo The dry period is an important factor influencing profitability, as it does not generate immediate economic return; however, it is necessary to allow the replacement of senescent mammary alveolar cells during this time. The objective of this study was to determine the effect of dry period length on productive and reproductive indicators in dairy cows from a pasture-based farm in Iriondo Department, Santa Fe. A total of 227 multiparous Holstein cows (2–8 calvings) were analyzed in an observational study. Three groups were formed according to dry period length: short dry period (SDP): 36 (25–39) days; standard dry period (STDP): 54 (50–59) days; and long dry period (LDP): 92 (84–98) days. The groups were compared for productive and reproductive indicators, including milk yield at 60 days in milk (MY60), milk yield at 305 days in milk (MY305), calving-to-first-service interval (CFSI), days open (DO) and conception rate at first service (CRFS). MY60 differed (p=0.02) by 233 liters between STDP and LDP, with no difference between STDP and SDP (p=0.14). No differences among groups were found for butterfat percentage, whereas crude milk protein differed by 0.3% in the SDP group compared with the others (p=0.003). No differences were observed among groups for CFSI, CRFS or DO. Overall, dry period length did not significantly affect the evaluated productive and reproductive indicators, although cows with a standard dry period showed better performance. El periodo seco es uno de los factores que participa en la rentabilidad debido a que no tiene un retorno económico rápido, este se debe respetar para permitir la reposición de las células alveolares mamarias senescentes durante este periodo. El objetivo del presente trabajo fue determinar el efecto de la duración del periodo seco sobre indicadores productivos y reproductivos en vacas lecheras en un establecimiento lechero con sistema a pastoreo del departamento Iriondo, Santa Fe. Se analizaron 227 vacas lecheras multíparas (2-8 partos) de raza Holstein bajo un estudio observacional. Se conformaron tres grupos de acuerdo a su periodo seco: vacas con periodo seco corto (PSC): 36 (25-39) días, periodo seco estándar (PSE): 54 (50-59) días y periodo seco largo (PSL): 92 (84-98) días. Se compararon los tres grupos con indicadores productivos y reproductivos como: producción de leche a 60 días en lactancia (PL60), producción de leche a 305 días en lactancia (PL305), intervalo parto primer servicio (IPPS), días abiertos (DA) y tasa de concepción a primer servicio (TCPS). La variable PL60 mostró una diferencia (p=0,02) en 233 litros entre PSE y PSL, sin diferencia entre PSE y PSC (p=0,14). No se encontraron diferencias entre los grupos para grasa butirosa, aunque para proteína bruta de la leche, el grupo PSC se diferenció de los grupos en 0,3% (p=0,003). No se observaron diferencias entre los grupos para las variables IPPS, TCPS y DA. El periodo seco no tuvo efecto sobre los indicadores productivos y reproductivos. Aunque las vacas lecheras con periodo seco estándar mostraron un mejor desempeño. Universidad Nacional del Nordeste 2026-03-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/xml application/epub+zip https://revistas.unne.edu.ar/index.php/vet/article/view/9155 10.30972/vet.3719155 Revista Veterinaria; Vol. 37 (2026); 1-7 Revista Veterinaria; Vol. 37 (2026); 1-7 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/9155/8992 https://revistas.unne.edu.ar/index.php/vet/article/view/9155/9013 https://revistas.unne.edu.ar/index.php/vet/article/view/9155/9014 Derechos de autor 2026 Valeria Bruera, Emanuel Adrián Frana Bisang, Pablo Marini https://creativecommons.org/licenses/by-nc/4.0

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