Incidence and recurrence of bovine abortion in dairy cattle from Costa Rica.

Autor: Vindas-van der Wielen E; Quantitative Veterinary Epidemiology Group, Wageningen University and Research, P.O. Box 338, Wageningen 6700 AH, the Netherlands., Rojas-Campos J; Centro Regional de Informática para la Producción Animal Sostenible, Escuela de Medicina Veterinaria, Universidad Nacional, P.O. Box 86-3000, Heredia Costa Rica., Romero-Zúñiga JJ; Programa de Investigación en Medicina Poblacional, Escuela de Medicina Veterinaria, Universidad Nacional, P.O. Box 86-3000, Heredia, Costa Rica., Monti G; Quantitative Veterinary Epidemiology Group, Wageningen University and Research, P.O. Box 338, Wageningen 6700 AH, the Netherlands. Electronic address: gustavo.monti@wur.nl.
Jazyk: angličtina
Zdroj: Preventive veterinary medicine [Prev Vet Med] 2024 Sep; Vol. 230, pp. 106256. Date of Electronic Publication: 2024 Jul 04.
DOI: 10.1016/j.prevetmed.2024.106256
Abstrakt: The reproductive efficiency and milk yield of cows are crucial factors in a dairy farm's profitability. However, abortions can have a negative impact on these factors. While the morbidity of abortion has been estimated in many countries, information on the burden on dairy cattle in tropical conditions is limited, and Costa Rica is a good example. This study aims to assess the incidence and recurrence of bovine abortion in dairy cattle from Costa Rica. The study analysed the morbidity of abortion in Costa Rican dairy herds between 2010 and 2022. The incidence rate (IR) and the recurrence rate (ReR) were calculated per 100 cow-months at risk using data from the Veterinary Automated Management and Production Control Programme (VAMPP). The dataset comprised 1032,457 lactations from 330,265 cows in 1134 specialized dairy herds. Abortions were classified either as early foetal mortality (EFM) or late foetal mortality (LFM). Rates were estimated based on cow breed, lactation number, and ecological zone to which the farm belongs. The IR of general abortion, EFM, and LFM cases were 0.98, 0.41, and 0.57 per 100 cow-months at risk, respectively. No statistically significant differences were found in the IR between cow breed, lactation number, and ecological zone, nor for the trend of abortions over calving years. The first ReR (for cows that had one previous abortion during the lactation) was 0.95, and the second ReR (for cows that had two previous abortions during the lactation) was 1.41 per 100 cow-months at risk. These results suggest that bovine abortions are an important ongoing problem in dairy farms in Costa Rica with potentially detrimental effects on the reproductive and productive performance of cows and may be representative of other specialized tropical dairy systems in Latin America.
Competing Interests: Declaration of Competing Interest The authors declares not to have any conflict of interest.
(Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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