Genetic parameters for 305 days milk yield and persistency across different calving ages using random regression analysis in Holstein Friesian Cows in Saudi Arabia [electronic resource].

By: Contributor(s): Description: p.13-18Uniform titles:
  • Agricultural research journal, Suez Canal University, 2009 v.9(2) [electronic resource].
Subject(s): Online resources: In: Agricultural Research Journal, Suez Canal University 2009 v.9(2)Summary: Persistency in dairy cattle can be used as an important economic selection criterion. Peak value in lactation can be used for genetic evaluation of dairy cattle performance. The aim of the present study was to determine changes in inheritance power of milk persistency (Mkprs) and 305 day milk yield (Mk305) across different calving ages. A total number of 121,044 and 40,348 observations were used for genetic analysis of milk persistency and 305 day milk yield.
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Persistency in dairy cattle can be used as an important economic selection criterion. Peak value in lactation can be used for genetic evaluation of dairy cattle performance. The aim of the present study was to determine changes in inheritance power of milk persistency (Mkprs) and 305 day milk yield (Mk305) across different calving ages. A total number of 121,044 and 40,348 observations were used for genetic analysis of milk persistency and 305 day milk yield.

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