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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Population structure of Tabapua beef cattle using pedigree analysis

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Bernardes, P. A. [1] ; Grossi, D. A. [1] ; Savegnago, R. P. [1] ; Buzanskas, M. E. [1] ; Ramos, S. B. [1] ; Romanzini, E. P. [2] ; Guidolin, D. G. F. [3] ; Bezerra, L. A. F. [4] ; Lobo, R. B. [5] ; Munari, D. P. [1]
Total Authors: 10
[1] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Exatas, Sao Paulo - Brazil
[2] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, Sao Paulo - Brazil
[3] Univ Anhanguera, Uniderp, Campo Grande, MS - Brazil
[4] Univ Sao Paulo, Fac Med Ribeirao Preto, Sao Paulo - Brazil
[5] ANCP, Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: LIVESTOCK SCIENCE; v. 187, p. 96-101, MAY 2016.
Web of Science Citations: 2

This study evaluated a Tabapua population structure and the linear relationship of the inbreeding coefficient with phenotypic values of weaning weight adjusted to 210 days of age (W210); age at first calving (AFC); first (CI1), second (CI2) and average (ACI) calving intervals; and, accumulated productivity (ACP). The phenotypic data used were from 7340 cows and the pedigree file had 15,241 animals. The average pedigree completeness of the last six generations was 47.99%. The effective numbers of founders and ancestors were 124 and 110, respectively, with a ratio of 1.13. These results suggested the absence of the genetic bottleneck effect. The inbreeding coefficient increased over generations and the average was 0.007. The effective population size became small in the last generation. The regression analysis results of phenotypic values for inbreeding coefficients were not significant (P > 0.05) for W210, CI1 and ACP; and, significant (P < 0.05) and favorable for AFC, ACI and CI2. The results indicated that mating between related animals and the intensive use of few breeders should be avoided. Regression analysis indicated no inbreeding depression, which can be justified by the fact that inbreeding is not yet strongly established. (C) 2016 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/19335-2 - Study of admixture level in Canchim breed and ma genetic group animals using high density single nucleotide polymorphism markers
Grantee:Marcos Eli Buzanskas
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/09364-5 - Estimates of population and genetic parameters and genetic trends for economically important traits in Tabapuã cattle
Grantee:Priscila Arrigucci Bernardes
Support type: Scholarships in Brazil - Master
FAPESP's process: 13/20091-0 - Prediction of breeding values in a experimental mice population using selective genotyping
Grantee:Rodrigo Pelicioni Savegnago
Support type: Scholarships in Brazil - Post-Doctorate