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Rahal NM, Luz GB, Martins KR, Gasperin BG, Feijó JDO, Dalto AGC, Rovani MT, Cunha RC, Corrêa MN. Association between chronic Anaplasma marginale and Babesia spp. infection and hematological parameters of taurine heifers. Rev Bras Parasitol Vet 2023; 32:e006423. [PMID: 37672469 PMCID: PMC10503823 DOI: 10.1590/s1984-29612023052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/17/2023] [Indexed: 09/08/2023]
Abstract
The aim of this study was to investigate the association between chronic Anaplasma marginale and Babesia spp. infection and hematological parameters of pregnant and non-pregnant taurine heifers. Blood samples from 94 females were collected on the first day (D-10) of timed artificial insemination (TAI) protocol and on pregnancy diagnosis (D+34). Hematological parameters were determined and compared between pregnant (PG) and non-pregnant (NPG) heifers, and within group at different sampling days. Real-time PCR (qPCR) was used to determine A. marginale and Babesia bovis infection, and for absolute quantification of Babesia spp. between PG and NPG groups. Correlation analysis was performed between the number of gDNA copies (CN) of Babesia spp. and hematological parameters. On D-10, mean hemoglobin concentration was higher for NPG, and hematocrit and total plasma protein were higher on D+34 for both groups. There was no difference in Babesia spp. CN between groups. In the first qPCR, all heifers were positive for A. marginale and B. bovis. Significant correlations were found between hemoglobin and erythrocyte and between hemoglobin and hematocrit (r = 0.8082 and r = 0.3009, respectively). Low levels of A. marginale and Babesia spp. did not affect hematological parameters of chronically infected pregnant and non-pregnant taurine heifers.
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Affiliation(s)
- Natalia Machado Rahal
- Núcleo de Pesquisa, Ensino e Extensão em Pecuária – NUPEEC, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
| | - Gabriela Bueno Luz
- Núcleo de Pesquisa, Ensino e Extensão em Pecuária – NUPEEC, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
| | - Kauê Rodriguez Martins
- Laboratório de Biologia Molecular Veterinária – LaBMol-Vet, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
| | | | - Josiane de Oliveira Feijó
- Núcleo de Pesquisa, Ensino e Extensão em Pecuária – NUPEEC, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
| | - André Gustavo Cabrera Dalto
- Rede Fibra, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, RS, Brasil
- Setor de Grandes Ruminantes, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul – UFRGS, Porto Alegre, RS, Brasil
| | - Monique Tomazele Rovani
- Rede Fibra, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, RS, Brasil
- Setor de Grandes Ruminantes, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul – UFRGS, Porto Alegre, RS, Brasil
| | - Rodrigo Casquero Cunha
- Laboratório de Biologia Molecular Veterinária – LaBMol-Vet, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
| | - Marcio Nunes Corrêa
- Núcleo de Pesquisa, Ensino e Extensão em Pecuária – NUPEEC, Faculdade de Veterinária, Universidade Federal de Pelotas – UFPel, Pelotas, RS, Brasil
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