Resumo

RODRIGUEZ, Alejandro et al. Efecto de la vacunación contra el virus de la fiebre aftosa sobre la pérdida de preñez en un rodeo de bovinos para carne. RIA. Rev. investig. agropecu. [online]. 2020, vol.46, n.3, pp.306-309. ISSN 1669-2314.

A study was conducted to evaluate the effect of foot-and-mouth disease (FMD) virus vaccination, applied during the embryonic period, on pregnancy loss of Angus cows pregnant by fixed-time artificial insemination (FTAI). Thirty-two days after FTAI pregnancy diagnosis was carried out. Two hundred ninety three pregnant cattle (heifers, n = 108, primiparous cows, n = 88 and multiparous cows, n = 97) were randomly assigned to one of two treatments: FMD vaccinated (VAC, n = 147) at 32 days after FTAI, and without vaccinating (NOVAC, n = 146). Sixty days after FTAI pregnancy diagnosis was carried out in order to quantify pregnancy losses. No significant differences (P = 0.78) in the percentage of pregnancy losses between 32 and 60 days after fixed-time AI between VAC (4.76%) and NOVAC (5.48%) were observed. Under the conditions of the present study, the application of FMD vaccination at 32 days of gestation had no effect on pregnancy loss in Angus cattle.

Palavras-chave : pregnancy loss; beef cattle; vaccination; gestation..

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