Changes of Blood and Milk Components and Correlation among Them after Parturition in Dairy Cows
2007
Lee, J.W. (Kongju National University, Yeasan, Republic of Korea), E-mail: [email protected] | Chung, Y.C. (Chung-Ang University, Ansung, Republic of Korea) | Kim, C.K. (Chung-Ang University, Ansung, Republic of Korea) | Kim, M.H. (Kongju National University, Yeasan, Republic of Korea) | Choi, S.H. (National Institute of Animal Science, RDA, Namwon, Republic of Korea)
Components of cholesterol, glucose, minerals (selenium, Ca, P) and vitamin E in blood and milk were collected and analyzed weekly after calving from a total of 78 Holstein cows. In this study, we examined changes of chemical components, correlations among them, and factors affecting the changes. The results were summarized as follows; 1. Average levels of components in blood during 9 weeks after calving were 178.8 mg/dl, 62.3 mg/dl, 8.9 mg/dl, 7.4 mg/dl, 52.2 ng/ml, 10.3 ㎍/ml, 16.3 mg/dl, 15.3 ng/dl, and 15.8 mg/dl for cholesterol, glucose, Ca, P, selenium, vitamin E, BUN (blood urea nitrogen), MSe (milk selenium), and MUN (milk urea nitrogen), respectively.
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