caa a22 4500 463237102 CHVBK 20180405153301.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s11259-007-0053-0 doi (NATIONALLICENCE)springer-10.1007/s11259-007-0053-0 Bovine Subclinical Ketosis in Dairy Herds in Iran [Elektronische Daten] [M. Sakha, M. Ameri, H. Sharifi, I. Taheri] Subclinical ketosis (SCK) is defined as elevated concentrations of ketone bodies in the absence of clinical signs of ketosis. It is an important metabolic disease in dairy cattle during early lactation and is associated with losses in milk production and several other periparturient diseases. Limited information is available regarding the prevalence of SCK in dairy herds in Iran. The objectives of this study were (i) to determine the incidence of SCK in the dairy herds in Kerman province of Iran using serum β-hydroxybutyrate (BHB) concentrations, and (ii) to investigate the relationship between serum concentrations of BHB and glucose of cows with SCK. In the present study, 90 multiparous Holstein cows (4-6 years old) from 11 commercial dairy herds were evaluated 3-4 weeks after calving. The distribution of blood BHB concentrations seemed to suggest a cut-off point of 1200 μmol/L between cows with and without SCK. At this cut-off point, 14.4% of tested cows (13/90) were classified as subclinically ketotic, with the prevalence rate within herd ranging from 10% to 20%. Cows with SCK were detected in all the investigated dairies except one. Blood glucose concentrations in cows with SCK were significantly lower (p ≤ 0.05) than in cows without SCK, and serum BHB and glucose concentration were inversely correlated (r = −0.43, p ≤ 0.05). The results suggest that, using a cut-off of 1200 μmol/L, BHB concentrations can be used during early lactation for diagnosis and to make management decisions for prevention and treatment. Springer Science + Business Media, Inc., 2007 subclinical ketosis nationallicence ketone body nationallicence β-hydroxybutyrate nationallicence BHB : β-hydroxybutyrate nationallicence IQR : interquartile range nationallicence SCK : subclinical ketosis nationallicence Sakha M. Department of Clinical Studies, Faculty of Specialized Veterinary Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran aut Ameri M. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA aut Sharifi H. Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran aut Taheri I. Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran aut Veterinary Research Communications Kluwer Academic Publishers 31/6(2007-08-01), 673-679 0165-7380 31:6<673 2007 31 11259 https://doi.org/10.1007/s11259-007-0053-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11259-007-0053-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sakha M. Department of Clinical Studies, Faculty of Specialized Veterinary Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran aut NATIONALLICENCE 700 1- Ameri M. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA aut NATIONALLICENCE 700 1- Sharifi H. Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran aut NATIONALLICENCE 700 1- Taheri I. Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran aut NATIONALLICENCE 773 0- Veterinary Research Communications Kluwer Academic Publishers 31/6(2007-08-01), 673-679 0165-7380 31:6<673 2007 31 11259 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer