Reproductive disorders and reconception of beef cows subjected to timed artificial insemination

• Published in: Ciência animal brasileira 2022, Vol.23
• Main Authors: Lima, Amanda Cristielly Nunes de, Pereira, Everton Tadeu Negrão, Almeida, Iury de Castro, Xavier, Ester Dias, Oliveira, Diana Carla Fernandes, Almeida, Anna Christina de
• Format: Article
• Language: English
• Subjects: VETERINARY SCIENCES
• ISSN: 1518-2797; 1809-6891; 1809-6891
• DOI: 10.1590/1809-6891v22e-70384

Abstract The objective of this study was to evaluate gestational losses between 30 and 120 days of gestation and reconception in beef cows submitted to fixed-time artificial insemination (FTAI). The 18,462 information from the zootechnical file of animals submitted to FTAI in the period of the breeding season from November 2019 to April 2020 in the semiarid region of Minas Gerais were analyzed. The parameters evaluated were gestational loss, animal category, presence of the calf with the cow, body condition score (BCS) and final situation of the breeding season of the females that lost gestation after FTAI, the data were analyzed by Person's chi-square test (χ²) and Kruskal-Wallis test, with a significance level of 5% with use of the SPSS program. The final pregnancy rate was 58.52%. The loss rate between the first and second gestational diagnosis was 3.6%. Dependence was observed between the variables category and gestational loss (χ²= 12.374, p0.05). The difference in BSC between the categories was significant (p