Fachbereich Veterinärmedizin



    Short communication: Associations between blood glucose concentration, onset of hyperketonemia, and milk production in early lactation dairy cows (2017)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Ruoff, Julia (WE 19)
    Borchardt, S (WE 19)
    Heuwieser, W (WE 19)
    Journal of Dairy Science; 100(7) — S. 1–6
    ISSN: 0022-0302
    DOI: 10.3168/jds.2016-12237
    Pubmed: 28501411
    Tierklinik für Fortpflanzung

    Königsweg 65
    Haus 27
    14163 Berlin
    +49 30 838 62618

    Abstract / Zusammenfassung

    The objectives of this study were to describe the associations between hypoglycemia and the onset of hyperketonemia (HYK) within the first 6 wk of lactation, to evaluate the effects of body condition score at calving on glucose concentration, and to study the effects of hypoglycemia on milk production. A total of 621 dairy cows from 6 commercial dairy farms in Germany were enrolled between 1 and 4 d in milk (DIM). Cows were tested twice weekly using an electronic handheld meter for glucose and β-hydroxybutyrate (BHB), respectively, for a period of 42 d. Hypoglycemia was defined as glucose concentration ≤2.2 mmol/L. Hyperketonemia was defined as a BHB concentration ≥1.2 mmol/L. The onset of HYK was described as early onset (first HYK event within the first 2 wk postpartum) and late onset (first HYK event in wk 3 to 6 postpartum). The effect of ketosis status on blood glucose within 42 DIM was evaluated using a generalized linear mixed model. No effect was observed of HYK on glucose concentration in primiparous cows. Multiparous cows with early-onset HYK had a lower glucose concentration (-0.21 mmol/L) compared with nonketotic cows. Overall, primiparous cows had a lower prevalence and incidence of hypoglycemia than multiparous cows. Hypoglycemia in multiparous cows was associated with higher first test-day milk production and 100 DIM milk production. In conclusion, hypoglycemia mainly occurred in multiparous cows with early-onset HYK, whereas primiparous cows were at a lower risk for hypoglycemia.