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1. Genetic and environmental heterogeneity of residual variance of weight traits in Nellore beef cattle
- Author:
- Haroldo HR Neves, et al. ; Roberto Carvalheiro; Sandra A Queiroz; Show all 3 Authors
- Source:
- Genetics, selection, evolution 2012 v.44 no.1 pp. 2531
- ISSN:
- 0999-193X
- Subject:
- Nellore; animal models; beef cattle; environmental factors; environmental impact; genetic heterogeneity; genetic merit; parturition; residual effects; variance; weaning; weight gain
- Abstract:
- ... BACKGROUND: Many studies have provided evidence of the existence of genetic heterogeneity of environmental variance, suggesting that it could be exploited to improve robustness and uniformity of livestock by selection. However, little is known about the perspectives of such a selection strategy in beef cattle. METHODS: A two-step approach was applied to study the genetic heterogeneity of residual ...
- DOI:
- 10.1186/1297-9686-44-19
- PubMed:
- 22672564
- PubMed Central:
- PMC3390267
- https://doi.org/10.1186/1297-9686-44-19
- Author:
- Haroldo HR Neves, et al. ; Ana M Perez O’Brien; Daniela Höller; Solomon A Boison; Marco Milanesi; Lorenzo Bomba; Yuri T Utsunomiya; Roberto Carvalheiro; Marcos VB da Silva; Curtis P VanTassell; Tad S Sonstegard; Gábor Mészáros; Paolo Ajmone-Marsan; Fernando Garcia; Johann Sölkner; Show all 15 Authors
- Source:
- Genetics, selection, evolution 2015 v.47 no.1 pp. 109
- ISSN:
- 0999-193X
- Subject:
- Brahman; Nellore; ancestry; backcrossing; beef; cattle; genetic markers; genome; genotyping; haplotypes; herds; introgression; milk; multidimensional scaling; population growth; population size; quality control; sampling; single nucleotide polymorphism; zebu breeds; Brazil
- Abstract:
- ... BACKGROUND: Nelore and Gir are the two most important indicine cattle breeds for production of beef and milk in Brazil. Historical records state that these breeds were introduced in Brazil from the Indian subcontinent, crossed to local taurine cattle in order to quickly increase the population size, and then backcrossed to the original breeds to recover indicine adaptive and productive traits. Pre ...
- DOI:
- 10.1186/s12711-015-0109-5
- PubMed:
- 25928250
- PubMed Central:
- PMC4404172
- https://doi.org/10.1186/s12711-015-0109-5
- Author:
- Haroldo HR Neves, et al. ; Yuri T. Utsunomiya; Adriana S. do Carmo; Roberto Carvalheiro; Márcia C Matos; Ludmilla B Zavarez; Ana M Pérez O’Brien; Johann Sölkner; John C McEwan; John B Cole; Curtis P Van Tassell; Flávio S Schenkel; Marcos VGB da Silva; Laercio R Porto Neto; Tad S Sonstegard; José F Garcia; Show all 16 Authors
- Source:
- BMC genetics 2013 v.14 no.52 pp. -
- ISSN:
- 1471-2156
- Subject:
- Nellore; beef cattle; birth weight; body conformation; body size; breeding value; bulls; calving; carcass weight; chromosome mapping; chromosomes; genes; humans; liveweight gain; mice; pregnancy; quantitative trait loci; single nucleotide polymorphism; swine; zebu; Brazil
- Abstract:
- ... Birth weight (BW) is an economically important trait in beef cattle, and is associated with growth- and stature-related traits and calving difficulty. One region of the cattle genome, located on Bos primigenius taurus chromosome 14 (BTA14), has been previously shown to be associated with stature by multiple independent studies, and contains orthologous genes affecting human height. A genome-wide a ...
- Handle:
- 10113/57013
- DOI:
- 10.1186/1471-2156-14-52
- PubMed:
- 23758625
- PubMed Central:
- PMC3683327
- https://doi.org/10.1186/1471-2156-14-52
- Author:
- Haroldo HR Neves, et al. ; Roberto Carvalheiro; Ana M Pérez O’Brien; Yuri T Utsunomiya; Adriana S do Carmo; Flávio S Schenkel; Johann Sölkner; John C McEwan; Curtis P Van Tassell; John B Cole; Marcos VGB da Silva; Sandra A Queiroz; Tad S Sonstegard; José Fernando Garcia; Show all 14 Authors
- Source:
- Genetics, selection, evolution 2014 v.46 no.1 pp. 2660
- ISSN:
- 0999-193X
- Subject:
- Nellore; beef; bulls; carcass weight; early development; finishing; genetic improvement; genetic merit; gestation period; marker-assisted selection; models; prediction; principal component analysis; regression analysis; scrotum; selection index; single nucleotide polymorphism; weaning; young animals; zebu
- Abstract:
- ... BACKGROUND: Nellore cattle play an important role in beef production in tropical systems and there is great interest in determining if genomic selection can contribute to accelerate genetic improvement of production and fertility in this breed. We present the first results of the implementation of genomic prediction in a Bos indicus (Nellore) population. METHODS: Influential bulls were genotyped w ...
- Handle:
- 10113/58866
- DOI:
- 10.1186/1297-9686-46-17
- PubMed:
- 24575732
- PubMed Central:
- PMC4014866
- https://doi.org/10.1186/1297-9686-46-17