Short communicationEffect of subclinical mastitis on reproductive performance of Holstein dairy cows in the Northwest of Spain

  1. Sadeghi, Hafez 1
  2. Yáñez, Uxía 2
  3. De Prado, Ana I. 3
  4. Gharagozlou, Faramarz 1
  5. Becerra, Juan J. 2
  6. Herradón, Pedro G. 2
  7. Peña, Ana I. 2
  8. Quintela, Luis A. 2
  1. 1 University of Tehran, Faculty of Veterinary Medicine. Dept. of Theriogenology, Tehran
  2. 2 University of Santiago de Compostela (USC), Faculty of Veterinary Medicine. Unit of Reproduction and Obstetrics, Dept. of Animal Pathology. 27002 Lugo
  3. 3 Laboratorios Calier, Barcelona
Spanish journal of agricultural research

ISSN: 1695-971X 2171-9292

Ano de publicación: 2021

Volume: 19

Número: 4

Tipo: Artigo

DOI: 10.5424/SJAR/2021194-18058 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Outras publicacións en: Spanish journal of agricultural research


Aim of study: To investigate the effect of subclinical mastitis (SCM) before and after first artificial insemination (AI), characterized by a somatic cell count (SCC) higher than 200×103 cell/mL, on reproductive performance including first service conception rate (FSCR) and pregnancy loss (PL) in Holstein dairy cows. Area of study: The central area of Lugo, Galicia, Spain. Material and methods: This retrospective study was conducted on herd database of a population of 80 commercial Holstein dairy cow farms. A total number of 2053 lactations were included in this study. A binary logistic regression was carried out to analyse all data. Main results: The results of this study indicated that cows that registered a SCC lower than 200×103 cell/mL within 30 days after first AI were more likely to conceive pregnancy than cows with a higher SCC (31.2% and 25.1% FSCR, respectively; OR=1.285, 95% CI=1.000-1.653). Additionally, an increased SCC neither 30 days before nor 30 days after first AI had a negative effect on prevalence of PL in dairy cows. Research highlights: These findings revealed that SCM within 30 days after first AI negatively affected FSCR, whilst 30 days before first AI did not affect it. Therefore, it could be suggested that preventing subclinical mastitis after first AI, during a critical period of 30 days, is important to maximize the reproductive performance of dairy cows.

Información de financiamento

University of Tehran, Iran Grant to Hafez Sadeghi for international sabbatical program Xunta de Galicia, Spain Predoctoral contract (2020/122) to Ux?a Y??ez The authors would like to thank all farmers from Cooperativa O Caxigo (A Pastoriza, Lugo), and the veterinary surgeon Carlos D?az de Pablo (Lugo) for their collaboration.


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