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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.)

Parameter estimates for reproductive and carcass traits in Nelore beef cattle

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Buzanskas, M. E. ; Pires, P. S. ; Chud, T. C. S. ; Bernardes, P. A. ; Rola, L. D. ; Savegnago, R. P. ; Lobo, R. B. ; Munari, D. P.
Total Authors: 8
Document type: Journal article
Source: Theriogenology; v. 92, p. 204-209, APR 1 2017.
Web of Science Citations: 10

The aim of this study was to estimate genetic parameters for scrotal circumference at 365 (SC365) and 450 (SC450) days of age, age at first calving (AFC), ribeye area (REA), backfat (BF) thickness, and rump fat (RF) thickness, in order to provide information on potential traits for Nelore cattle breeding program. Genetic parameters were estimated using the Average Information Restricted Maximum Likelihood method in single- and multitrait analyses. Four different animal models were tested for SC365, SC450, REA, BF, and RF in single-trait analyses. For SC365 and SC450, the maternal genetic effect was statistically significant (P < 0.01) and was included for multitrait analyses. The direct heritability estimates for SC365, SC450, AFC, REA, BF, and RF were equal to 0.31, 0.38, 0.24, 032, 0.16, and 0.19, respectively. Maternal heritability for SC365 and SC450 was equal to 0.06 and 0.08, respectively. The highest genetic correlations were found among the scrotal circumferences. Testing for the inclusion of maternal effects in genetic parameters estimation for scrotal circumference should be evaluated in the Nelore breeding program, mostly for correctly ranking the animal's estimated breeding values. Similar heritability estimates were observed for scrotal circumference, as well as favorable genetic correlations of this trait with AFC and carcass traits. Thus, scrotal circumference measured at 365 days of age could be a target trait for consideration in the Nelore selection index in order to improve most of the traits herein analyzed. (C) 2016 Published by Elsevier Inc. (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: 13/13972-0 - Production and characterization of multipotente and induced pluripotent cells in Blastocerus dichotomus
Grantee:Luciana Diniz Rola
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/08939-0 - Identification of copy number variations in Girolando cattle
Grantee:Tatiane Cristina Seleguim Chud
Support type: Scholarships in Brazil - Doctorate
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
FAPESP's process: 15/25096-6 - Imputation, linkage desequilibrium, haplotype blocks and inbreeding in Nelore cattle
Grantee:Priscila Arrigucci Bernardes
Support type: Scholarships in Brazil - Doctorate