Metabolic status related to claw disorders

Michal Vlček, Radovan Kasarda

Abstract


Received: 2016-07-25 | Accepted: 2016-08-02 | Available online: 2017-03-31
http://dx.doi.org/10.15414/afz.2017.20.01.06–09

The aim of this study was to evaluate the relationship between metabolic status and claw disorders. 122 Holstein cows from 2 farms in west Slovakia between years 2012 and 2016 were observed. Total 226 test-day records of milk yield of cows between 8 to 150 days in milk (DIM) were analysed. Maximum 2 test-day records before functional claw trimming were observed. The influence of F/P ratio to claw disorders (IDHE, DD, SU) was analysed with PROC GLM of SAS. The model included the fixed effect of breed, year of calving, calving season, number of lactation and the random effects of days in milk and F/P ratio. During the functional claw trimming was found that 27 cows were affected by IDHE, 9 cows by DD and 27 cows by SU. Observed cows in average produced 39.48 ±9.53 kg of milk. The mean of F/P ratio was 1.17 ±0.22 and the mean of days in milk was 78 ±38.42. The models described the occurrence of claw disorders from 13.20 % in case of DD to 18.85 % by IDHE. The prevalence of SU was described by model on 17.34 %. The effect of F/P ratio increased significantly (P > 0.05) the occurrence of SU by 30.33 %.

Keywords: Holstein, cow, test-day yield, fat/protein ratio, claw disorder

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