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2015 | 33 | 1 |

Tytuł artykułu

Genotype-environment interaction between Chile and North America and between Chilean herd environmental categories for milk yield traits in Black and White cattle

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
In order to evaluate the expression of sire genetic evaluations obtained in North America for Chilean Black and White Cattle, genetic correlations were estimated for milk (MY), fat (FY) and protein (PY) yields, and for fat (F%) and protein (P%) contents between Chile, Canada and the US, from predicted transmitting abilities of common sires in two countries. Moreover, genetic correlations for the same traits were estimated between herd environmental categories formed according to MY levels, using bivariate analyses. Genetic correlation estimates for MY, FY, and PY between Chile-Canada (0.80, 0.61, and 0.70), and between Chile-US (0.79, 0.68, and 0.77), were lower than values obtained by simulation, assuming sire selection of the best 50%, and were also lower than the genetic correlations between Canada-USA, which were close to 1, suggesting a moderate genotype by country interaction. All genetic correlation estimates between countries for F% and P% were close to 1. No evidence of genotype-environment interaction was found for any trait between High and Low Chilean herd environmental categories based on MY, (genetic correlation estimates ≥0.96;not statistically different from 1). Results indicate that a single national dairy genetic improvement programme incorporating international evaluations could be implemented in southern Chile, rather than separate programmes for specific herd MY environments. Moderate genotype-environmental interaction between North American and Chilean environments was found for MY, FY, and PY.Results from across and within country analyses indicate that sire selection in North America for milk solids yield will produce relatively high correlated genetic responses for the southern Chile dairy production system characterized by grazing and a temperate climate.

Wydawca

-

Rocznik

Tom

33

Numer

1

Opis fizyczny

p.23-33,ref.

Twórcy

  • Department of Genetics and Biostatistics, School of Veterinary Medicine and Animal Husbandry, National Autonomous University of Mexico, Ciudad Universitaria, 04510, Distrito Federal, Mexico
  • Department of Agricultural and Animal Production, Autonomous Metropolitan University-Xochimilco, Calzada del Hueso 1100, 04960, Distrito Federal, Mexico
autor
  • Agriculture and Service Cooperative, Cooprinsem, Manuel Rodríguez 1040, Osorno, Region de Los Lagos, Chile
autor
  • Agriculture and Service Cooperative, Cooprinsem, Manuel Rodríguez 1040, Osorno, Region de Los Lagos, Chile
  • Autonomous University of Tamaulipas, 87030, Ciudad Victoria, Tamaulipas, Mexico
  • Department of Genetics and Biostatistics, School of Veterinary Medicine and Animal Husbandry, National Autonomous University of Mexico, Ciudad Universitaria, 04510, Distrito Federal, Mexico

Bibliografia

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  • BOETTCHER P.J., FATEHI J., SCHUTZ M.M., 2003 – Genotype × environment interactions in conventional versus pasture-based dairies in Canada. Journal of Dairy Science 86, 383-389.
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  • CASTILLO-JUAREZ H., OLTENACU P.A., CIENFUEGOS-RIVAS E.G., 2002 – Genetic and phenotypic relationships among milk production and composition traits in primiparous Holstein cows in two different herd environments. Livestock Production Science 78, 223-231.
  • CDN, 2009 - Official Genetic Evaluations. Accessed Jan. 8, 2009. http://www.cdn.ca/files_ge_articles.php
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  • INTERBULL 2013 – Interbull Routine Genetic Evaluation for Dairy Production Traits. April 2013. International Bull Evaluation Service, Uppsala, Sweden. Accessed May 29, 2013. http://wwwinterbull.slu.se/eval/prod-appen1-131.pdf.
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  • MONTALDO H.H., PELCASTRE-CRUZ A., 2012 – Factors affecting genetic correlation estimates from dairy sires’ genetic evaluations to assess genotype-environment interaction. Animal Science Papers and Reports 30, 309-315.
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  • ODEPA 2010 – Dairy Bulletin -Year 2010. Ministry of Agriculture, Chile. Pages 1-51. Accessed Mar.29, 2011 http://www.odepa.cl/wp-content/uploads/2013/09/boletin_Leche-2010.pdf
  • RAFFRENATO E., BLAKE R.W., OLTENACU P.A., CARVALHEIRA J., LICITRA G., 2003 –Genotype by environment interaction for yield and somatic cell score with alternative environmental definitions. Journal of Dairy Science 86, 2470-2479.
  • SCHUTZ M.M., HANSEN L.B., STEUERNAGEL G.R., RENEAU J.K., 1990 – Genetic parameters for somatic cells, protein, and fat in milk of Holsteins. Journal of Dairy Science 73, 494-450.
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Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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