Impacto de diferentes estratégias de busca sob os resultados de uma metanálise para a característica mastite em gado de leite

Danilo Pereira da Silva; Gustavo do Valle Polycarpo; Fraine Natacha Aléssio; Alexandre de Queiroz; Sirlei Aparecida Maestá; Ricardo da Fonseca

doi:10.1590/1809-6891v24e-73159E

Authors

Danilo Pereira da Silva Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0001-5079-9162
Gustavo do Valle Polycarpo Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0001-6282-3297
Fraine Natacha Aléssio Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0003-0004-2342
Alexandre de Queiroz Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0002-3946-4887
Sirlei Aparecida Maestá Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0001-6517-5184
Ricardo da Fonseca Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Campus Dracena, São Paulo, Brasil https://orcid.org/0000-0002-1163-6296

DOI:

https://doi.org/10.1590/1809-6891v24e-73159E

Abstract

Poorly formulated search strategies can have great influences on the results of a meta-analysis, since it directly impacts the amount and adherence to the theme of the works used for study, therefore, the formulation of a consistent and functional search strategy is essential for the review system to achieve its goals. The objective of this work was to study the impact of different search strategies in a systematic review by performing a meta-analysis to estimate heritability for the mastitis trait in dairy cattle. Once the search strategies were defined, the searches carried out in the Web of science, Scopus, Scielo and Pubmed databases returned 921 studies from which, after going through the identification, selection, eligibility and inclusion processes, 25 studies were selected. Withdrawals from selected articles, 26 heritability estimates were used in the meta-analysis. A random effect model was used, with all analyzes performed by the R program, through the Metafor package. The estimates obtained through the combined statistics of studies for mastitis, presented values of low magnitude (0.05 and 0.06). The effects of search strategies have a significant impact on the meta-analysis estimates produced.
Keywords: Milk cattle; Heritability; Genetical enhancement

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References

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