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CES Medicina Veterinaria y Zootecnia

On-line version ISSN 1900-9607

Abstract

GARZON AUDOR, Adriana Marcela  and  OLIVER ESPINOSA, Olimpo Juan. Incidence and prevalence of clinical and subclinical ketosis in grazing dairy cattle in the Cundiboyacencian Andean plateau, Colombia. Ces. Med. Vet. Zootec. [online]. 2018, vol.13, n.2, pp.121-136. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.13.2.3.

Ketosis is a common metabolic disorder in dairy cattle farms that causes economic losses through reduced milk yield, reproductive performance and increased risk of early culling. In the Cundiboyacencian Andean plateau, the incidence of the condition is unknown. The main objective of the study was to determine the incidence and the prevalence of subclinical (SCK) and clinical ketosis (CK) in grazing dairy cows in Colombia within the first six weeks of lactation. A purposive sample of 150 lactating dairy cows from 10 commercial dairy farms in the Cundi-Boyacencian Andean plateau were tested weekly using point of care device (POCD) for β-hydroxybutyrate (pHB) during the first 6 weeks of lactation. Parity, days in milk (DIM), body condition score (BCS), prepartum and dry period length (DP), breed, milk yield (MY) and peripartum diseases were recorded for each cow and management practices were determined using a survey for each farm. Weekly incidence, cumulative incidence and prevalence were calculated. The cumulative incidence of SCK was 25.33% and 3.33% for CK. The peak incidence was 8% at week 4 postpartum for SCK and 2.6% at week 2 for CK. The overall prevalence of SCK was 42.6% and CK prevalence was 6%. The peak prevalence of SCK and CK was 10.6% at week 4 and 2.6% at week 2 postpartum, respectively. The most frequent periparturient diseases were retained placenta and metritis. SCK was a high incident disease within the first 6 weeks of lactation, with a peak incidence at week 4 postpartum in multiparous cows.

Keywords : β-Hydroxybutyrate; dairy cattle; epidemiology; hyperketonemia.

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