| Full text | |
| 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: | 13/26902-0 - 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 Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 13/20571-2 - Functional genomics of feed intake and efficiency in Nellore cattle |
| Grantee: | Miguel Henrique de Almeida Santana |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/07566-2 - Genomics applied to ruminant production |
| Grantee: | José Bento Sterman Ferraz |
| Support Opportunities: | 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 Opportunities: | Regular Research Grants |