Porcine hemothropic mycoplasmas infection associated with productive impact in intensive pig production

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorEvance Animal Health-
Autor(es): dc.contributorCeva Animal Health-
Autor(es): dc.creatorPetri, Fernando Antônio Moreira [UNESP]-
Autor(es): dc.creatorSonalio, Karina [UNESP]-
Autor(es): dc.creatorde Souza Almeida, Henrique Meiroz [UNESP]-
Autor(es): dc.creatorFerraz, Maria Eugênia Silveira-
Autor(es): dc.creatorStorino, Gabriel Yuri [UNESP]-
Autor(es): dc.creatorde Souza, Mauro Rodrigo-
Autor(es): dc.creatorAndré, Marcos Rogério [UNESP]-
Autor(es): dc.creatorde Oliveira, Luis Guilherme [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:44:17Z-
Data de disponibilização: dc.date.available2022-02-22T00:44:17Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1186/s40813-020-00171-1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205422-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205422-
Descrição: dc.descriptionBackground: So far, three porcine hemoplasmas (PH) have been identified, namely Mycoplasma suis, Mycoplasma parvum, and Mycoplasma haemosuis. The first one is the main agent associated with porcine hemoplasmosis, a possible cause of economic losses in pig production. Thus, this work aimed to detect and quantify PH 16S rRNA in finishing pigs and to associate its load estimate with average daily weight gain (ADWG). For this purpose, whole blood samples from 318 pigs were collected at an age of 75 days (d0) when the pigs entered the finishing phase and 105 days later (d105). To calculate ADWG, the animals were weighed at the abovementioned dates. Then, DNA from blood samples were submitted to a qPCR targeting the 16S rRNA gene for PH. Spearman correlation test was performed to investigate potential associations between ADWG and the quantification values. Lastly, the molecular characterization of PH was done by sequencing the 23S rDNA gene. Results: Out of the 318 samples, 190 (59.74%) were positive on d0, and 304 (95.6%) were positive on d105. A significant correlation was observed (p < 0.05), albeit with a low coefficient value (0.18), when comparing ADWG with quantification values on d105. The phylogenetic analysis based on the 23S rDNA gene showed that four sequences were closely related to M. parvum, and one sequence was positioned in the M. suis cluster. Conclusion: Two PH, M. suis and M. parvum, were detected in a Brazilian pig farm. Moreover, increasing occurrence through time was observed, which may have affected the productive performance of positive animals, mainly at the end of the finishing phase, when antimicrobials are removed.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, Via de Acesso Prof. Paulo Donato Castellane s/n-
Descrição: dc.descriptionEvance Animal Health, João Baptista de Queiroz Júnior, 447-
Descrição: dc.descriptionCeva Animal Health, Manoel Joaquim Filho, 303-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, Via de Acesso Prof. Paulo Donato Castellane s/n-
Descrição: dc.descriptionFAPESP: 2019/14122-7-
Idioma: dc.languageen-
Relação: dc.relationPorcine Health Management-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectADWG-
Palavras-chave: dc.subjectIntensive pig production-
Palavras-chave: dc.subjectMycoplasma parvum-
Palavras-chave: dc.subjectMycoplasma suis-
Palavras-chave: dc.subjectqPCR-
Título: dc.titlePorcine hemothropic mycoplasmas infection associated with productive impact in intensive pig production-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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