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Influence of Mycoplasma bovis infection on milk production and quality of Holstein dairy cows

Published online by Cambridge University Press:  19 December 2022

Fabrício Dias Torres ,
Karina Medici Madureira ,
Karen Nascimento da Silva ,
Cristiane Azevedo ,
Tiane Martin de Moura ,
Marcia Regina Skorei  and
Viviani Gomes
Fabrício Dias Torres
Affiliation:
Department of Internal Medicine, College of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil Axys Análises Diagnóstico Veterinário, Porto Alegre, RS, Brazil
Karina Medici Madureira
Affiliation:
Department of Anatomy, Pathology and Internal Medicine, College of Veterinary Medicine and Animal Science, Federal University of Bahia, Salvador, Bahia, Brazil
Karen Nascimento da Silva
Affiliation:
Department of Internal Medicine, College of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
Cristiane Azevedo
Affiliation:
Qualy & Calf Consultoria Veterinária, Wenceslau Braz, PR, Brazil
Tiane Martin de Moura
Affiliation:
Axys Análises Diagnóstico Veterinário, Porto Alegre, RS, Brazil
Marcia Regina Skorei
Affiliation:
Axys Análises Diagnóstico Veterinário, Porto Alegre, RS, Brazil
Viviani Gomes*
Affiliation:
Department of Internal Medicine, College of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
*
Author for correspondence: Viviani Gomes, Email: viviani.gomes@usp.br
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Abstract

We wished to determine if Mycoplasma bovis infection can negatively impact milk quality and production in Holstein dairy cows. For this Research Communication, milk samples (271) from Holstein cows from 3 herds were screened for M. bovis by real-time PCR. Positive (n = 21) and negative animals (n = 21) were matched by herd, age, lactations and days in milk (DIM). Pairs were evaluated in 7 stages of lactation: D1–50, D51–100, D101–150, D151–200, D201–250, D251–300, and D ≥ 301. A mixed model was used to assess the effect of groups (M. bovis+ × M.bovis−), time (lactation) and groups × time interaction. Cows positive for M. bovis had lower average milk production per day and high somatic cells count (SCC).

Keywords

Milk productionmilk qualitymycoplasmosissomatic cells count
Type
Research Article
Information
Journal of Dairy Research , Volume 89 , Issue 4 , November 2022 , pp. 416 - 418
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of Hannah Dairy Research Foundation

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Footnotes

*

Deceased.

References

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