Over past decades, breeding objectives focused almost exclusively on performance: yearly egg production, milk yields, milk fat content, and growth rates. Efforts were concentrated on only a handful of breeds of cattle, pig and chicken. Substantial production increases were thus achieved
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/livestock-genetics-companies-concentration-and-proprietary-strategies-emerging
[2] http://admin.indiaenvironmentportal.org.in/category/author/susanne-gura
[3] http://admin.indiaenvironmentportal.org.in/category/publisher/league-pastoral-peoples-and-endogenous-livestock-development
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/livestock
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poultry
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/economy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/genetic-cloning
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/genetic-engineering
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global