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  • Title: [Survival analysis of German Holstein cows after an abomasal displacement].
    Author: Ricken M, Hamann H, Scholz H, Distl O.
    Journal: Dtsch Tierarztl Wochenschr; 2005 Feb; 112(2):55-60, 62-5. PubMed ID: 15787315.
    Abstract:
    From 1996 to 2002 5159 cattle with abomasal displacement was treated in the Clinic for Cattle, School of Veterinary Medicine Hannover. An analysis of systematic effects on influences on the length of survival following surgical correction of the abomasal displacement could be performed for 1411 cows. These animals were under the official milk recording scheme. Significant influences on lifetime after an abomasal displacement were interval between calving and diagnosis of disease, lactation number, type of abomasal displacement, inbreeding coefficient, calving difficulties, region of origin and sire of the calf. The lifetime after an abomasal displacement significantly differed between several months of calving and some sires of the cow. The individual milk yield in lactations before and after abomasal displacement of the cow was significant for the length of lifetime. The heritability estimate for length of lifetime after abomasal displacement using residual maximum likelihood (REML) in a linear animal model was h2 = 0.01-0.03.
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