This study was aimed to evaluate the dose-response the effects of nano-encapsulated conjugated linoleic acids(CLAs) on in vitro ruminal fermentation profiles. A fistulated Holstein cow was used as a donor of rumen fluid. Nano-encapsulated CLAs(LF, 5% of nano-encapsulated CLA-FFA; HF, 10% of nano-encapsulated CLA-FFA; LT, 5% of nano-encapsulated CLA-TG; HT, 10% of nano-encapsulated CLA-TG) were added to the in vitro ruminal fermentation experiment. In the in vitro ruminal incubation test, the total gas production on incubation with nano-encapsulated CLAs was increased significantly according to the incubation time, compared with the control(p<0.05). The tVFA concentrations on addition of LF and HT were significantly higher than that of the control(p<0.05). Thus, nano-encapsulated CLAs might improve the ruminal fermentation characteristics without adverse effects on the incubation process. In addition, the population of Butyrivibrio fibrisolvens which is closely related to ruminal biohydrogenation was increased by adding HT, while decreased by adding LF at 12 h incubation. These results showed that nano-encapsulated CLA-FFA could be applied to enhance CLA levels in ruminants by maintaining the stability of CLA without causing adverse effects on ruminal fermentation profiles considering the optimal dosage.

한국산 창선충상과 연구 결과로, Dorylaimidae, Aporcelaimidae, Qudsianematidae, Nordiidae등 4과에서 Dorylaimus, Laimydorus, Mesodorylaimus, Sectollema, Labrollema, Eudorylaimus, Ecumellicus, Discolaimus, Ellchodelus, Oriverutus의 10속에 속하는 Dorylaimus stagllalis, Laimydorus siddiqi, Mesodorylaimus IIsitatlls, Sectollema basilgoodeyi, Labrollema hyalillum, L. lIepalellse, L. vulvapapillatum, Elidorylaimlis carteri, E. pseudocarteri, Ecumenicus monhystera, Discolaimus major, Enchodelus Longidens, E. Itopedorlls, E. macrodorlls, Oriverutlls pagarus등 15종의 한국 미기록종을 발표한다.