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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.)

Genetic correlations and heritability estimates for dry matter intake, weight gain and feed efficiency of Nellore cattle in feedlot

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Author(s):
Gebim Polizel, Guilherme Henrique [1] ; Grigoletto, Lais [1] ; Carvalho, Minos Esperandio [1] ; Rossi Junior, Paulo [2] ; Sterman Ferraz, Jose Bento [1] ; de Almeida santana, Miguel Henrique [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Dept Vet Med, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Fed Parana, Dept Anim Sci, Rua Funcionarios 1550, BR-80035050 Curitiba, Parana - Brazil
Total Affiliations: 2
Document type: Journal article
Source: LIVESTOCK SCIENCE; v. 214, p. 209-210, AUG 2018.
Web of Science Citations: 3
Abstract

The objective of this study was to estimate genetic parameters and correlations for intake, feed efficiency and weight gain in beef cattle. Phenotypic data of average daily gain (ADG), dry matter intake (DMI), feed conversion ratio (FCR) and residual feed intake (RFI) calculated from 2,058 male and female Nellore cattle were used. The genetic parameters and heritability estimates were estimated using these data and pedigree by the AIREMLF90 program. The heritability estimates (standard error) found for ADG, DMI, FCR and RFI were 0.35(0.09), 0.46(0.09), 0.19(0.06) and 0.28(0.07), respectively. We highlighted the genetic correlation between ADG and FCR (-0.40) and DMI with RFI (0.61). The heritability and genetic correlations presented here show that is possible to include feed efficiency traits in Nellore breeding programmes, and the selection of efficient animals could reduce feed consumption without performance loss. (AU)

FAPESP's process: 13/20571-2 - Functional genomics of feed intake and efficiency in Nellore cattle
Grantee:Miguel Henrique de Almeida Santana
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/26902-0 - Use of genetic variance in dynamic mechanistic models of growth to predict cattle performance and carcass composition under feedlot conditions
Grantee:Mateus Castelani Freua
Support type: Scholarships in Brazil - Master
FAPESP's process: 14/07566-2 - Genomics applied to ruminant production
Grantee:José Bento Sterman Ferraz
Support type: Research Projects - Thematic Grants
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