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Effect of retained placenta and clinical mastitis on reproduction parameters, immune response, and steroidogenic receptors gene expression in postpartum crossbred dairy cows

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Abstract

The purpose of this study was to evaluate the effect of retained placenta (RP) and clinical mastitis (CM) on the reproductive efficiency of crossbred dairy cows during the postpartum period and the effect in some innate immune system indicators. For this, two experiments were carried out. In the first, a total of 232 cows were evaluated and divided as: healthy control (n = 184), RP (n = 22), and CM (n = 26) groups. The RP and CM was evaluated until 30 days postpartum (DPP) and reproductive rates were measured. In experiment 2, cows were divided in control (n = 10), RP (n = 10), and CM (n = 30) groups. Between 40 and 50 DPP, clinical, gynecological examination and endometrial cytobrush were performed to evaluate subclinical endometritis (SE) and gene expression of interleukins 1β (IL-1β) and 6 (IL-6), chemokine ligand 5 (CCL5), estrogen α (ESR1), and progesterone (PGR) receptors by qRT-PCR analysis. In experiment 1, the conception rate at 1st artificial insemination (AI) was lower in RP and CM groups and pregnancy rate at 150 days decreased in CM group. Calving-to-1st AI interval and days open were shorter in healthy cows. In experiment 2, the occurrence of SE was 26.7% and higher in RP and CM groups. The expression of IL-1β increased in RP and CM groups, while IL-6 was less expressed in RP group. The CCL5, ESR1, and PGR were similar between groups. In conclusion, cows with RP and CM had their reproductive efficiency negatively affected and had they initial pro-inflammatory response improved by the increase of IL-β.

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Acknowledgements

The authors thank the dairy farms and their employees for allowing their animals for this study, the Nanobiotechnology Laboratory (NANOBIO), Tumors Osteoimmunology and Immunology Laboratory and Animal Biotechnology Laboratory (LABIO) of the Federal University of Uberlândia (UFU); the Fundação de Amparo à Pesquisa de Minas Gerais (FAPEMIG) (Universal Demand – 01/2016 process CVZ – APQ-01199-16 – RM Santos); the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for the scholarship granted (OP Ramos), the São Paulo Research Foundation (FAPESP) Post Doc Scholarship under grant number [2018/16051-7]. and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the productivity scholarship (JPE Saut). This work was carried out with the support of the CAPES – Financing Code 001.

Funding

This study was supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)– Financing Code 001, and Fundação de Amparo à Pesquisa de Minas Gerais - FAPEMIG (APQ-01199-16 – RM Santos).

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Oglênia Pereira Ramos: investigation, methodology, writing—original draft. Amanda Lima Rezende: investigation, methodology. Paula Batista de Alvarenga: investigation, methodology. Carla Cristian Campos: investigation, methodology. Estevão Vieira de Rezende: investigation, methodology. Marcelo José Barbosa Silva: methodology. Luisa Cunha Carneiro: writing—review and editing. Giovanna Faria de Moraes: writing—review and editing. João Paulo Saut: conceptualization, funding acquisition, project administration, writing—review and editing. Ricarda Maria dos Santos: investigation, methodology, writing—review and editing.

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Correspondence to João Paulo Elsen Saut.

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All procedures in this study were conducted according to the Ethical Principles in Animal Experimentation approved by the Committee of Ethics in the Use of Animals (CEUA) of the Federal University of Uberlândia, under the protocol 003/17.

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The authors declare no competing interests.

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Ramos, O.P., Rezende, A.L., de Alvarenga, P.B. et al. Effect of retained placenta and clinical mastitis on reproduction parameters, immune response, and steroidogenic receptors gene expression in postpartum crossbred dairy cows. Trop Anim Health Prod 54, 180 (2022). https://doi.org/10.1007/s11250-022-03140-8

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