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dc.contributor.authorAl-Samarai, Firas
dc.description.abstractRecords of 1039 Holstein cattle were analyzed. Cows were culled during years from 1998 to 2004 at the Nasr Dairy Cattle Station, United Company for Animal Resources Ltd., Al-Soueira. General linear model within the SAS program was used to study the effect of some fixed factors (season and year of birth , stage of lactation and level of first milk yield ) on longevity. Results obtained that season of birth have a significant effect ( P < 0.05 ) on longevity, whereas the residual factors had a high significant effect ( P < 0.01 ). The heritability of founctional and true longevity using MIVIQUE method were 0.03 , 0.008 respectively and the corresponding heritability were 0.04 and 0.03 by using TYPE 1 method. Best linear unbiased pridiction ( BLUP ) for 24 sire using Harvey program were ranged from 17.15 to – 11.71 months respectivelyen
dc.publisherKerbala Universityen
dc.rightsCreative Commons Uznanie autorstwa 3.0 Polskapl_PL
dc.subjectHolstein cattleen
dc.titleGenetic analysis of functional longevity in Holstein cattleen
dc.title.alternativeالتحليل الوراثي لمدة الحياة الوظيفية في ماشية الهولشتاينother
dc.contributor.organizationUniversity of Baghdad, Iraqen
dc.description.epersonFiras Al-Samarai

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Creative Commons Uznanie autorstwa 3.0 Polska
Except where otherwise noted, this item's license is described as Creative Commons Uznanie autorstwa 3.0 Polska