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청초와 볏짚을 이용한 완전배합발효사료의 저장기간에 따른 화학조성분의 변화
이현준,김원호,김현섭,임근발,안병석,조광근,강승하,강상기,이홍구,우정희,최윤재 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.6
Three kinds of green forages(rye, oats and mixed forages) was harvested and mixed with rice straw, wheat bran and 2 grains(corn and soybean), which harvested 2 different dates(common harvesting dates, 7 days early to common harvesting dates). And each mixture was ensiled in 6 poly vinyl chlorides that was 60 liter, immediately. They were opened at 0, 5, 10, 25, 35, 60 and 100 days after ensiling for chemical analysis. And its effects of those TMFFs on feed values were observed. Average contents of water, crude protein, ADF, NDF, Ca and P of formulated TMFs were 72 to 75%, 14.75 to 18.24, 12.47 to 19.07, 39.82 to 47.01, 0.99 to 1.07 and 0.38 to respectively. Crude protein content was the highest in the mixed forages-TMFF and the lowest in the rye-TMFF. The ADF and NDF contents of rye-TMFF were higher than others. And CP, ADF, NDF, TDN, P and Ca contents were no significant difference among treatments regardless of storage period and harvest time, but all treatments indicated good quality. Intenal temperatures of TMFF were shown to be 1 to 5℃ higher than ambient temperatures. The temperature of the Oat-TMFF formulated during winter sustained higher to the level of 6∼9℃ for 10 days. The pH of TMFF were 4.0 to 4.2 and the content of NH_3-N was shown to be 7.79 to 8.23㎎/㎗. In the VFA contents, any tendency was not shown at all treatments depending on harvest time. Even though rye-TMFF showed the lowest VFA value. At all treatments except rye-TMFF, propionate production was increased and stable after 25 days of storage. Digestibility of rice straw from TMFF on DM basis was 15∼20% higher compared with non-treated rice straw.