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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.)

Genome-wide association analysis of feed intake and residual feed intake in Nellore cattle

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Santana, Miguel H. A. [1] ; Utsunomiya, Yuri T. [2] ; Neves, Haroldo H. R. [2] ; Gomes, Rodrigo C. [3] ; Garcia, Jose F. [2, 4] ; Fukumasu, Heidge [1] ; Silva, Saulo L. [1] ; Oliveira Junior, Gerson A. [1] ; Alexandre, Pamela A. [1] ; Leme, Paulo R. [1] ; Brassaloti, Ricardo A. [5] ; Coutinho, Luiz L. [5] ; Lopes, Thiago G. [2] ; Meirelles, Flavio V. [1] ; Eler, Joanir P. [1] ; Ferraz, Jose B. S. [1]
Total Authors: 16
[1] Fac Zootecnia & Engn Alimentos USP, BR-13635900 Sao Paulo - Brazil
[2] UNESP Univ Estadual Paulista, Fac Ciencias Agr & Vet, BR-14884900 Sao Paulo - Brazil
[3] Empresa Brasileira Pesquisa Agropecuaria, CNPGC EMBRAPA, BR-79002970 Campo Grande, Matogrosso Do S - Brazil
[4] UNESP Univ Estadual Paulista, Fac Med Vet Aracatuba, BR-16050680 Sao Paulo - Brazil
[5] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: BMC GENETICS; v. 15, FEB 11 2014.
Web of Science Citations: 30

Background: Feed intake plays an important economic role in beef cattle, and is related with feed efficiency, weight gain and carcass traits. However, the phenotypes collected for dry matter intake and feed efficiency are scarce when compared with other measures such as weight gain and carcass traits. The use of genomic information can improve the power of inference of studies on these measures, identifying genomic regions that affect these phenotypes. This work performed the genome-wide association study (GWAS) for dry matter intake (DMI) and residual feed intake (RFI) of 720 Nellore cattle (Bos taurus indicus). Results: In general, no genomic region extremely associated with both phenotypic traits was observed, as expected for the variables that have their regulation controlled by many genes. Three SNPs surpassed the threshold for the Bonferroni multiple test for DMI and two SNPs for RFI. These markers are located on chromosomes 4, 8, 14 and 21 in regions near genes regulating appetite and ion transport and close to important QTL as previously reported to RFI and DMI, thus corroborating the literature that points these two processes as important in the physiological regulation of intake and feed efficiency. Conclusions: This study showed the first GWAS of DMI to identify genomic regions associated with feed intake and efficiency in Nellore cattle. Some genes and QTLs previously described for DMI and RFI, in other subspecies (Bos taurus taurus), that influences these phenotypes are confirmed in this study. (AU)

FAPESP's process: 11/16643-2 - Genome-Wide Association Study for detection of chromosomal regions related to scrotal circumference in Nellore cattle
Grantee:Yuri Tani Utsunomiya
Support type: Scholarships in Brazil - Master
FAPESP's process: 12/03551-5 - Genomic study for intake and feed efficiency in Nellore cattle
Grantee:Miguel Henrique de Almeida Santana
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 12/02039-9 - Genomic study of feed intake and efficiency in Nellore cattle
Grantee:José Bento Sterman Ferraz
Support type: Regular Research Grants