TY  - JOUR
T1  - Effects of Different Ratios of Short-Medium Chain Fatty Acids to Long Chain 
  Fatty Acids on Rumen Fermentation and Metabolism of Blood Lipids in Lactating 
  Dairy Cows
AU - Wang, Jia-Qi AU - Sun, Peng AU - Bu, Deng-Pan AU - Sun, Yan AU - Nan, Xuemei 
JO  - Journal of Animal and Veterinary Advances
VL  - 12
IS  - 16
SP  - 1332
EP  - 1337
PY  - 2013
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2013.1332.1337
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2013.1332.1337
KW  - Short-medium chain fatty acid
KW  -long chain fatty acid
KW  -rumen fermentation
KW  -blood lipid
KW  -dairy cow
AB  - The objectives of this study were to investigate the effects of different ratios of Short-Medium Chain Fatty Acids (SMCFA) to Long Chain Fatty Acids (LCFA) on rumen fermentation and metabolism of blood lipids in lactating dairy cows. Thirty six Holstein cows (183&plusmn;46 DIM) were allotted to three treatments according to randomized block design with 12 cows in each treatment. Cows in treatments were supplemented with 80 g day<SUP>-1</SUP> SMCFA mixture and 320 g day<SUP>-1</SUP> LCFA mixture, 400 g day<SUP>-1</SUP> of butterfat, 240 g day<SUP>-1</SUP> SMCFA mixture and 160 g day<SUP>-1</SUP> LCFA mixture. Rumen liquid and blood samples were collected from all the cows. The results showed that supplementing different ratios of SMCFA to LCFA did not affect rumen fermentation. As the ratios of SMCFA to LCFA increased, concentrations of trans-11 18:1 linearly increased and the cis-9, cis-12 18:2 quadratically increased and peaked at 40SM60L. The contents of LCFA (&gt;16:0) and PUFA were quadratically increased but that of SFA decreased quadratically. Simultaneously, concentrations of triglycerides in the serum quadratically increased whereas that of insulin decreased quadratically. This study demonstrated that dietary supplementation of different ratios of SMCFA to LCFA did not influence rumen fermentation but altered the plasma fatty acid composition in dairy cows.
ER  -