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화식사료가 반추위 미생물에 의한 반추위 분해율에 미치는 영향
장연(Y. Zhang),김 마가렛 노고이(K.M. Nogoy),이예현(Y.H. Lee),강희동(H.D. Kang),정명옥(M.O.Jung),박성준(S.J.Park),최성호(S.H. Choi) 충북대학교 동물생명과학연구소 2017 동물생명과학연구 Vol.9 No.-
The in situ study was conducted to examine the effective degradability of dry matter(EDDM), crude protein(EDCP), ether extract(EDEE) and neutral detergent fiber(EDNDF) in the rumen of boiled total mixed ration(TMR) for late fattening of Hanwoo heifer in comparison with those of not boiled TMR. Three ruminally fistulated non-lactating Hanwoo cows were used in a 2 x 2 Latin square design. The cattle were fed 6.0 kg of not boiled TMR(control) or 6.0 kg(DM basis) of boiled TMR(boiled feed) twice(08:00 and 18:00) daily divided into two in an equal amount. pH, and contents of ammonia-N and total VFA in the rumen were not influenced by the experimental diet. Parameter “a” relevant to degradability of DM(p<0.001), CP(p<0.001), EE(p<0.001) of measured components were significantly higher for control feeding. But, those of NDF was significantly higher for boiled feed feeding(P<0.001). Parameter “b” relevant to degradability of DM was significantly higher in boiled feed feeding (p=0.019). But there are no difference between control and boiled feed in parameter “b” of CP, EE, and NDF. The effective degradabilities of NDF and EE were significantly higher in boiled feed feeding compared with those of control feed feeding in the rumen of Hanwoo cow. Based on these results, we concluded that boiled TMR feed is possible to increased degradation of NDF by rumen microbes.
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