Estimation of genetic parameters for the tick and hemoparasite burden in Angus cattle.

Autor: David G; Departamento de Zootecnia, Universidade Estadual Paulista-UNESP, Jaboticabal, São Paulo, Brazil., da Silva Arce CD; Departamento de Zootecnia, Universidade Estadual Paulista-UNESP, Jaboticabal, São Paulo, Brazil., de Araujo Neto FR; Instituto Federal Goiano, Rio Verde, Goiás, Brazil. francisco.neto@ifgoiano.edu.br., de Albuquerque LG; Departamento de Zootecnia, Universidade Estadual Paulista-UNESP, Jaboticabal, São Paulo, Brazil., Giglioti R; Agência Paulista de Tecnologia dos Agronegócios (APTA), Nova Odessa, São Paulo, Brazil., Okino CH; Embrapa Pecuária Sudoeste, São Carlos, São Paulo, Brazil., de Almeida Regitano LC; Embrapa Pecuária Sudoeste, São Carlos, São Paulo, Brazil., de Sena Oliveira MC; Embrapa Pecuária Sudoeste, São Carlos, São Paulo, Brazil., de Oliveira HN; Departamento de Zootecnia, Universidade Estadual Paulista-UNESP, Jaboticabal, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2023 Sep 19; Vol. 55 (5), pp. 302. Date of Electronic Publication: 2023 Sep 19.
DOI: 10.1007/s11250-023-03714-0
Abstrakt: The study was conducted with the objective of estimating genetic and phenotypic parameters for tick (CRM) and Babesia bigemina (IBBi), Babesia bovis (IBBo), and Anaplasma marginale (IAM) burden in Angus female breed in Brazil. The sample group was composed of Angus females raised in herds located in a region of endemic instability for cattle tick fever in the state of Rio Grande Sul (RS), Brazil. The variance components were estimated using Bayesian inference and Gibbs sampling algorithm, considering a multi-trait animal model. Heritability estimates showed values of low magnitude, ranging from 0.03 (IBBo) to 0.16 (CRM), while repeatability estimates ranged between 0.07 (IBBo) and 0.21 (CRM). Regarding the genetic correlation estimates, the values showed low (-0.01 for IBBo × IAM) to moderate (0.55 between IBBi × IAM) magnitudes. The results indicate that it is possible to use tick count and hemoparasite infection levels as selection criteria, with small genetic gains.
(© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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