Advances in dairy Research
Open Access
ISSN: 2329-888X
+44 1300 500008
ISSN: 2329-888X
+44 1300 500008
Zhijun Cao
College of Animal Science and Technology,
No.2, West Road, Yuanmingyuan, Haidian District, Beijing, 100193
China
Research Article
Evaluation of a Hand-Held Meter to Detect Subclinical Ketosis in Dairy Cows
Author(s): Shuoshuo Xu, Zhaohai Wu, Yang Zou, Shengli Li and Zhijun Cao
Shuoshuo Xu, Zhaohai Wu, Yang Zou, Shengli Li and Zhijun Cao
The objective of this study was to evaluate the performance of a new cowside test in detecting sub-clinical ketosis (SCK) by comparing Ã?²-hydroxybutyrate (BHBA) concentrations obtained using a new hand-held meter, TNN (Yicheng Co., Beijing, China), with those obtained from the conventional laboratory method and to compare the accuracy of using blood, urine and milk samples for diagnostic purposes. TNN is based on an enzymatic electrochemical technique to detect SCK in dairy cows. 297 samples of blood, 97 samples of urine and 85 samples of milk from clinically healthy Holstein cows from d 1 to 58 post-partum were analyzed. The correlation coefficients for BHBA with TNN versus laboratory method were 0.98. Based on Bland-Altman plot, agreement between the two methods was good for BHBA. In this study, the TNN test had sensitivities of 91.4 and 96.8% at 1.2 and 1.4 mmol of BHBA/L, respectiv.. View More»
DOI:
10.4172/2329-888X.1000173