Effects of clinical mastitis and puerperal diseases on reproductive efficiency of dairy cows
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Effects of clinical mastitis and puerperal diseases on reproductive efficiency of dairy cows Carla Cristian Campos 1 & Francisco Luiz do Prado 2 & João Paulo Justo dos Reis 1 & Luisa Cunha Carneiro 3,4 Paula Regina Basso Silva 5 & Giovanna Faria de Moraes 1 & Ricarda Maria dos Santos 1
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Received: 12 July 2019 / Accepted: 12 June 2020 # Springer Nature B.V. 2020
Abstract The objective of this study was to evaluate the effects of clinical mastitis (CM) occurring before or after the first AI postpartum, and puerperal diseases (PD) on the pregnancy per artificial insemination (P/AI), number of AI/conception, and days open (DO) of two different dairy herds (Girolando and Holstein). The CM, PD (retained placenta and metritis), and reproductive data were collected from two dairy farms throughout 1 year. Both farms were located in the southern region of Minas Gerais State, Brazil. One herd was composed of Girolando cows and the other of Holstein cows. Cows were inseminated after estrus detection or submitted to timed AI. Only CM cases (clots in milk accompanied or not by udder inflammation) that occurred before or after first AI postpartum (from calving until 35 days after the first AI) were considered. There were no effects of CM, PD, or both diseases on the reproductive efficiency of the Girolando herd. In the Holstein herd, a reduce P/AI and prolonged DO were verified for those affected by ≥ 2 CM cases. Holstein cows with CM also required more inseminations to become pregnant. A decrease in the P/AI and an increase in the number of AI/conception and DO were observed in cows of the Holstein herd that developed only CM, only PD, and for those diagnosed with both diseases. In summary, considering that some management differences exist between the two dairy farms, CM occurrence (before or after the first AI postpartum) and puerperal diseases negatively affected the reproductive efficiency of the Holstein herd. However, these diseases did not compromise the reproductive efficiency of the Girolando herd. Keywords Bovine . Conception . Inflammation . Reproductive efficiency
Introduction * Luisa Cunha Carneiro [email protected] 1
Faculty of Veterinary Medicine (FAMEV), Federal University of Uberlândia, Km 78 BR 050 highway, Campus Glória, Uberlândia, Minas Gerais 38410-337, Brazil
2
Veterinarian, 321 Costa Rica street, apt 21, Poços de Caldas, Minas Gerais, Brazil
3
Laboratory of Teaching and Research in Pathology of Reproduction, Centre of Biotechnology in Animal Reproduction, Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Av. Duque de Caxias Norte, 225, Pirassununga, SP 13635-900, Brazil
4
The Roslin Institute and Royal (Dick) School of Veterinary Studies, University 21 of Edinburgh, Easter Bush Campus, Midlothian EH25 9RG, Scotland
5
College of Veterinary Medicine, University of Minnesota, 108 Pomeroy Centre 1964 Fitch Ave St. Paul, Minneapolis, MN 55108, USA
For over 60 years, bovine clinical mastitis (CM) has
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