Tropical Animal Health and Production

, Volume 51, Issue 4, pp 759–765 | Cite as

Non-infectious causes that increase early and mid-to-late pregnancy loss rates in a crossbreed dairy herd

  • Fransergio Souza
  • Luisa Cunha CarneiroEmail author
  • João Cesar
  • Ricarda Maria dos Santos
Regular Articles


High reproductive performance is an element factor for profitability in dairy herds; although, pregnancy loss of non-infectious nature during early and mid-to-late embryonic period is increasing in dairy cattle. Based on that, the present study aimed to determine the incidence of pregnancy loss before and after 60 days of insemination, and to identify some non-infectious causes that could enhance it. The herd was composed by 600 crossbred dairy cows and those with a corpus luteum (CL) were treated with prostaglandinF2α, then inseminated, on the other hand, those without a CL were submitted to a timed artificial insemination protocol (TAI). Pregnancy losses rates were analyzed by logistic regression by SAS, and differences were considered significant when P < 0.05. The overall pregnancy loss and mid-to-late pregnancy loss were not affected by animal category (P > 0.05); although, early pregnancy loss was higher in cows than in heifers (11.90 vs. 3.39%). The early pregnancy loss was higher in those cows that calved on spring/summer when compared to those calved on fall/winter (9.22% vs. 16.11%), moreover, those inseminated during spring/summer tended to have higher early pregnancy loss when compared to those inseminated on fall/winter (13.35% vs. 8.57%). In conclusion, when some of non-infectious causes were evaluated, it was observed that cows that calved on spring/summer had higher pregnancy loss. At this point, strategies should be developing to minimize pregnancy loss in dairy herds, as it could be considered an important reproductive problem.


Dairy system Embryonic loss Fetal loss Reproduction efficiency 


Funding information

This study is financially supported by the Research Support Foundation of Minas Gerais state, Brazil, (FAPEMIG).

Compliance with ethical standards

Statement of animal right

In the conduct of this study, all rules, regulations and ethical considerations recommended by Brazil country and other reputable authorities have been carefully observed. The design of this study was approved by the committee of care and use of animals from Federal University of Uberlândia (CEUA/UFU/2002).

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Faculty of Veterinary MedicineFederal University of UberlândiaUberlândiaBrazil
  2. 2.Laboratory of Teaching and Research in Pathology of Reproduction, Center of Biotechnology in Animal Reproduction, Department of Animal Reproduction, School of Veterinary Medicine and Animal ScienceUniversity of São Paulo (USP)PirassunungaBrazil

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