01847naa a2200289 a 450000100080000000500110000800800410001902400360006010000140009624501140011026000090022430000090023352009890024265000200123165000260125165300180127765300150129570000220131070000260133270000260135870000170138470000170140170000260141870000260144470000230147077300640149321611212024-01-22 2023 bl uuuu u00u1 u #d7 a10.1007/s11250-023-03714-02DOI1 aDAVID, G. aEstimation of genetic parameters for the tick and hemoparasite burden in Angus cattle.h[electronic resource] c2023 a5 p. ahe 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. aAnimal breeding aQuantitative genetics aGibbs samples aResistance1 aARCE, C. D. DA S.1 aARAUJO NETO, F. R. DE1 aALBUQUERQUE, L. G. DE1 aGIGLIOTI, R.1 aOKINO, C. H.1 aREGITANO, L. C. de A.1 aOLIVEIRA, M. C. de S.1 aOLIVEIRA, H. N. DE tTropical Animal Health and Productiongv. 55, n. 302, 2023.