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Genetic association between feed efficiency, growth, scrotal circumference, and carcass traits in Guzerat cattle.
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- المؤلفون: Pereira LS;Pereira LS; Brunes LC; Brunes LC; Baldi F; Baldi F; do Carmo AS; do Carmo AS; Soares BB; Soares BB; Magnabosco V; Magnabosco V; da Costa Eifert E; da Costa Eifert E; Magnabosco CU; Magnabosco CU
- المصدر:
Tropical animal health and production [Trop Anim Health Prod] 2023 Mar 25; Vol. 55 (2), pp. 132. Date of Electronic Publication: 2023 Mar 25.- نوع النشر :
Journal Article- اللغة:
English - المصدر:
- معلومة اضافية
- المصدر: Publisher: Springer Country of Publication: United States NLM ID: 1277355 Publication Model: Electronic Cited Medium: Internet ISSN: 1573-7438 (Electronic) Linking ISSN: 00494747 NLM ISO Abbreviation: Trop Anim Health Prod Subsets: MEDLINE
- بيانات النشر: Publication: 2005- : Heidelberg : Springer
Original Publication: Edinburgh, Livingstone. - الموضوع:
- نبذة مختصرة : The objective of this study was to estimate the genetic parameters for feed efficiency-related traits and their genetic correlations with growth, male fertility, and carcass traits using multi-trait analysis in Guzerat cattle. Further, it aimed to predict the direct and correlated responses for feed efficiency traits when selection was applied for growth, male fertility, and carcass traits. The evaluated traits were adjusted weight at 120 (W120), 210 (W210), 365 (W365), and 450 days of age (W450), adjusted scrotal circumference at 365 days of age (SC365) and at 450 days of age (SC450), scrotal circumference, ribeye area (REA), backfat thickness (BFT), rump fat thickness (RFT), residual feed intake (RFI), and dry matter intake (DMI). The genetic parameters were obtained by the restricted maximum likelihood method (REML), using an animal model in multi-trait analyses. The heritability estimates for W120, W210, W365, W450, SC365, and SC450 varied from low to high (0.17 to 0.39). The carcass traits, REA, BFT, and RFT, displayed low to moderate heritability estimates, 0.27, 0.10, and 0.31, respectively. The heritability estimates for RFI (0.15) and DMI (0.23) were low and moderate, respectively. The RFI showed low genetic correlations with growth traits, ranging from - 0.07 to 0.22, from 0.03 to 0.05 for scrotal circumference, and from - 0.35 to 0.16 for carcass, except for DMI, which ranged from 0.42 to 0.46. The RFI and DMI presented enough additive genetic variability to be used as selection criteria in Guzerat breed genetic improvement program. Additionally, the response to selection for RFI would be higher when selection is performed directly for this trait. The selection for residual feed intake would not promote unfavorable correlated responses for scrotal circumference, carcass (yield and finish), and growth traits. Therefore, the selection for more efficient animals would not compromise the productive, reproductive, and carcass performance, contributing to reduce the production costs, increasing the profitability and sustainability of beef cattle production in tropical areas.
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- الموضوع: Date Created: 20230325 Date Completed: 20230329 Latest Revision: 20240229
- الموضوع: 20240301
- الرقم المعرف: 10.1007/s11250-023-03552-0
- الرقم المعرف: 36964827
- المصدر:
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