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http://dx.doi.org/10.5713/ajas.2012.12466

Effects of Lactation Stage and Individual Performance on Milk cis-9, trans-11 Conjugated Linoleic Acids Content in Dairy Cows  

Wang, T. (College of Natural Resources and life Science, Pusan National University)
Oh, J.J. (College of Natural Resources and life Science, Pusan National University)
Lim, J.N. (College of Natural Resources and life Science, Pusan National University)
Hong, J.E. (College of Natural Resources and life Science, Pusan National University)
Kim, J.H. (College of Natural Resources and life Science, Pusan National University)
Kim, J.H. (Research and Technology Center)
Kang, H.S. (College of Natural Resources and life Science, Pusan National University)
Choi, Y.J. (Laboratory of Animal Cell Biotechnology, Department of Agricultural Biotechnology, Seoul National University)
Lee, H.G. (College of Natural Resources and life Science, Pusan National University)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.26, no.2, 2013 , pp. 189-194 More about this Journal
Abstract
The goal of this study was to evaluate the effects of lactation stage and individual performance on milk cis-9, trans-11 conjugated linoleic acid (CLA) content in dairy cows. In experiment 1, the milk cis-9, trans-11 CLA content from dairy cows in early ($0.33{\pm}0.014%$), middle ($0.37{\pm}0.010%$), and late stages ($0.44{\pm}0.020%$) showed significant differences (p<0.05); and the individual contents of the major fatty acids, especially cis-9, trans-11 CLA in cows of the same lactation were also variable. In the second experiment design as a validation test, our results once again showed that the individual contents of cis-9, trans-11 CLA were various, and a difference of about 2-fold (0.55% vs 0.95%) was observed, although the animals were offered same diet. These data demonstrated that lactation stage and individual performance have considerable effects on milk cis-9, trans-11 CLA contents.
Keywords
cis-9; trans-11 CLA; Individual Performance; Lactation Stage;
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