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Animal Science Papers and Reports

.: Home > Animal Science Papers and Reports > 2009 > Volume 27 Number 3 > Anna Nienartowicz-Zdrojewska1,*, Ireneusz Dymarski2, Zbigniew Sobek1, Anna Wolc1

Culling reasons as related to lifetime dairy performance in Polish Friesian (Black-and-White) cows on Paw³owice farm in the years 1909-2006

Anna Nienartowicz-Zdrojewska1,*, Ireneusz Dymarski2, Zbigniew Sobek1, Anna Wolc1
1 Department of Genetics and Animal Breeding, University of Life Sciences in Poznaٌ, Wo³yٌska 33, 60-637 Poznaٌ, Poland 2 National Research Institute of Animal Production, Experimental Farm Paw³owice, Miel؟yٌskich 14, 64-122 Paw³owice, Poland
Abstract :

Relationships were estimated between longevity, culling reasons and yield of milk and milk
components in the I, II and III 305-day lactations and lifetime dairy performance. ANOVA with
Duncan test was applied. Cows culled for health problems showed the highest lifetime dairy
performance; those kept in the herd for a short of time were culled because of hard milking and
behavioural problems or were sold for breeding.

Keywords :
cows / cattle / culling /dairy performance / lifetime mik production /milk

Date Deposited : 04 Aug 2011 13:37

Last Modified : 04 Aug 2011 13:37

Official URL: http://www.ighz.edu.pl/

Volume 27, Number 3, - 2009

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