http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정용대,이중재,설국환,김두완,민예진,유동조,조규호,김영화 충남대학교 농업과학연구소 2017 Korean Journal of Agricultural Science Vol.44 No.4
This study was conducted to determine the effect of inoculation of microorganism isolated from pig feces on nutrient contents of fermented hulless barley. The microbial flora in feces of a total of four crossbred piglets (Landrace × Yorkshire × Duroc) was analyzed by 16s rRNA sequencing. The most abundant strain was then selected for fermentation of hulless barley. Lactobacillus plantarum (L. plantarum) was dominant (64.56%) in intestinal microbial flora in the pig feces. The selected candidate strain showed significantly higher survival rate at pH 7 than at pH 2.5 and 3.0 (p < 0.05). Incubated culture containing the candidate strain showed an increased growth rate with lower pH levels after 7.5 h incubation compared to initial incubation period (p < 0.05). When compared with commercial multiple probiotics which were used as control, the selected strain showed faster growth rate at 5 h post-incubation (p < 0.05). During the fermentation period, neither inoculated nor noninoculated control hulless barley showed any change in pH value. Crude fat, fiber and ash contents were lower (p < 0.05) in hulless barley inoculated by the selected strain compared to control. However, moisture, energy, NDF and ADF were not affected by the inoculation of strain or fermentation period. Lactic acid was increased and acetic acid was decreased in the hulless barley inoculated with the selected strain during the fermentation period (p < 0.05). Taken together, our results suggest that L. plantarum derived from the pigs could be utilized as a new microorganism for manufacturing fermented feed stuffs.
정용대,송태화,박태일,한옥규,류경선 경상대학교 농업생명과학연구원 2012 농업생명과학연구 Vol.46 No.6
This study was conducted to investigate effects of dietary anthocyanin fortified barley (AFB) or whole crop barley (WCB) on growing performance, meat quality and blood properties in swine at late fattening phase. Swine performance was not significantly differed (p>0.05) but average daily gain and average daily feed intake tended to increase in treatments. Meat quality parameters including pH, cooking loss, shear force and meat surface color were not influenced by the addition of barley in diet. However, DPPH content of longgissmus dorsi muscle was significantly increased in WCB10 compared to control, AFB5 and WCB5 (p<0.05). FRAP content of longgissmus dorsi muslce was higher in WCB5 than the AFB (p<0.05), thereby, a tendency in FRAP was not similar to that of DPPH. Only myristic acid (C14:0) was affected, and the lowest myristic acid was found when AFB was supplied to swine. A tendency was not determined in total protein and HDL-cholesterol content, however, control, WCB10 and AFB5 had high in total protein and showed significantly low values in HDL-cholesterol. Therefore, the results indicate that barley can be considered as an ingredient in swine diet, but further investigation is necessary.
산란계에 영양소 함량이 다른 유기사료의 급여가 생산 및 난품질에 미치는 영향
정용대,최희철,나재천,류명선,류경선 한국가금학회 2009 한국가금학회 정기총회 및 학술발표회 Vol.26 No.-
본 연구는 유기산란계의 생리에 적합하고 생산성과 난품질개선에 최적의 에너지 및 단백질수준을 구명하고자 수행하였다. 공시계는 27주령 산란계(Brown Nick) 600수를 사용하였고 8주간 사양시험을 실시하였다. 처리구는 3×2(ME 2,750, 2,775, 2,800 ㎉/㎏; CP 16, 17 %)로 총 6개 처리구, 처리구당 4반복, 반복당 25수씩 배치하였다. 수당 사육면적은 0.22 ㎡ 이상의 공간을 제공하고 산란상자와 횃대를 설치하였다. 점등은 자연 일조 및 점등을 14시간 이하로 하여 유기양계 규정을 준수하였다. 조사항목은 산란율, 난중, 산란량, 사료섭취량, 사료요구율 그리고 난품질을 측정, 분석하였다. 실험 초기 4주간에는 에너지와 단백질 수준이 낮을수록 산란율이 증가하는 경향을 나타내었다. 난중, 사료섭취량은 사료내 영양소 수준에 의한 차이는 없었다. 산란량은 산란율과 동일한 결과를 나타내었다. 사료요구율은 사료내 에너지 및 단백질 수준이 낮을수록 감소하는 경향이 있었다. 5-8주간 산란율, 산란량은 0-4주와 동일하게 단백질, 에너지 수준이 낮은 처리구에서 개선되는 경향이 보였다. 난중은 ME 2,775 ㎉/㎏ 처리구에서 ME 2,800 ㎉/㎏ 처리구보다 증가하였다(P<0.05). 사료섭취량은 처리구간 차이가 보이지 않았다. 사료요구율은 또한 사료내 에너지 및 단백질 수준에 의한 차이를 나타내지 않았다. 0-8주간 산란율, 산란량은 사료내 에너지 및 단백질 수준이 높을수록 증가하는 경향을 보였다. 난중과 사료섭취량은 처리구간 차이가 없으며 사료요구율은 에너지 수준이 낮을수록 감소하는 경향이 있으며 단백질 또한 유사한 경향을 보였다. 실험개시 8주후에 난각강도는 ME 2,750, 2,775 ㎉/㎏ 처리구에서 2,800 처리구보다 증가하였다(P<0.05). 난백고, 호우유닛, 난황색도는 ME 2,750, 2,775 ㎉/㎏ 처리구에 비하여 2,800 ㎉/㎏ 처리구에서 증가하였다(P<0.05). 난백고, 호우유닛, 난황색도는 처리구간 교호작용을 나타내었다(P<0.05).