Data/hora: 22/06/2024 11:43:37

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 15/09/2021
Data da última atualização: | 15/09/2021
Autoria: | AYMEE, L.; GREGG, W. R. R.; LOUREIRO, A. N.; DI AZEVEDO, M. I. N.; PEDROSA, J. de S.; MELO, J. dos S. L. de; CARVALHO-COSTA, F. A.; SOUZA, G. N. de; LILENBAUM, W.
Afiliação: | LUIZA AYMEE, Universidade Federal Fluminense; WILMARA RAMPINELLI REUTER GREGG; ANA PAULA LOUREIRO, Universidade Estácio de Sá; MARIA ISABEL NOGUEIRA DI AZEVEDO, Universidae Federal Fluminense; JULIANA DE SOUZA PEDROSA, Universidade Federal Fluminense; JULIANA DOS SANTOS LORIA DE MELO, Universidade Federal Fluminense; FILIPE ANIBAL CARVALHO-COSTA, Instituto Oswaldo Cruz; GUILHERME NUNES DE SOUZA, CNPGL; WALTER LILENBAUM, Universidade Federal Fluminense.
Título: | Bovine Genital Leptospirosis and reproductive disorders of live subfertile cows under field conditions.
Ano de publicação: | 2021
Fonte/Imprenta: | Veterinary Microbiology, v. 261, 109213, 2021.
DOI: | https://doi.org/10.1016/j.vetmic.2021.109213
Idioma: | Inglês
Conteúdo: | Bovine genital leptospirosis (BGL) is characterized by silent chronic reproductive disorders, most related to early embryonic death leading to estrus repetition, subfertility and abortions. However, most studies were conducted in slaughterhouses, which lacks reproductive and sanitary history of the studied animals. This study aimed to evaluate the occurrence of Leptospira sp. infection in live cows with history of low reproductive efficiency. Blood, urine, cervico-vaginal mucus and uterine fragment were collected from nine cows of the same herd presenting reproductive failure (abortions, estrus repetition and chronic infertility). Serology (MAT) and molecular analysis (PCR and nucleotide sequencing) were performed. Serology showed three (33.3%) seroreactive cows, two to Sejroe and one to Icterohaemorrhagiae serogroups. Six cows (66.7%) presented leptospiral DNA on genital samples, while all urine samples were negative. L. interrogans was identified in five samples, very closely related to strains from Sejroe (n = 3) and Icterohaemorrhagiae (n = 2) serogroups, while L. noguchii was identified in one sample. Results from this preliminary study demonstrates the presence of leptospires on uterus and reinforces the negative impact of leptospiral infection on reproductive tract, highlighting its association with reproductive failures on live animals.
Palavras-Chave: | Doença reprodutiva; Infecção uterina; PCR.
Thesagro: | Bovino; Doença Animal; Gado.
Thesaurus Nal: | Cattle diseases; Leptospira; Uterine diseases.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (25296-1) - UPC - AP - DD -  -  -  - DIS