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사료첨가물로써 완충제와 Fly - ash 의 첨가TMR 사료가 면양의 소화율 및 반추위내 발효특성에 미치는 영향
고영두,김재황,이수칠,이종찬,김삼철 한국영양사료학회 1999 韓國營養飼料學會誌 Vol.23 No.3
본 시험은 화력발전소의 전력 부산물로 발생되는 Fly-ash와 현재 시판되고 있는 완충제를 각각 1%씩 TMR 사료에 첨가하여 시험사료의 일반 성분을 분석하였으며, 면양을 이용한 소화율과 반추위액의 발효특성을 조사하였다. 시험사료는 체중의 2%를 급여하였으며 사양시험은 3 × 3 Latin square법으로 실시하였다. 조지방 소화율은 대조구, TMR + Buffer 및 TMR + Fly-ash 급여구가 각각 71.7, 74.1 및 77.2%로서 Fly-ash를 첨가함으로서 유의하게 높게(P<0.05) 나타났다. ADF 소화율(69.9∼71.2%)과 NFE 소화율(72.1∼72.9%) 및 가소화영양소 총량(65.7∼66.1%)은 처리구간 유의한 차이는 없었다. 반추위액 pH는 사료급여 30분에는 차이가 없었으나 사료급여 2시간 후부터는 Fly-ash 첨가구에서는 계속 증가 (P<0.05)되어 효과가 가장 높았다. 반추위액의 NH₃-N 함량은 사료급여 30분 후 TMR구가 높게(P<0.05) 나타났으나, 사료급여 2시간 후에는 TMR + Buffer 급여구가 타 처리구에 비하여 낮게(P<0.05)나타났다. 반추위액의 total-VFA 함량은 각 처리구에서 사료급여 후 2시간까지는 증가(P<0.05)한 후 감소하였으며, 그 효과는 TMR + Buffer 급여구가 가장 높게 나타났다. 이상의 결과를 종합하면 TMR 사료에 완충제나 Fly-ash를 첨가함으로서 PH(6.2∼6.8)를 조절하고 소화율을 향상시켜 사료 이용성을 개선시켰으며, 특히 Fly-ash는 완충제로서의 역할이 우수하여 고가인 시판 완충제의 대체효과가 높은 것으로 인정된다. This study was carried out to investigate the effects of addition on buffer (1%) and Fly-ash (1%) when TMR diet fed as a basic diet. Trial diets were estimated for the chemical compostion, and investigated the nutrient utilization of trial diets to that of sheep was given a diet of 2% of the body weight (dry matter basis) daily. The feeding trials were assigned to 3 × 3 Latin square design. During feeding trials, the digestibility and fermentation characteristics in the rumen were measured. Digestibility of crude fat of TMR + Buffer group (74.1%) and TMR + Fly-ash group (77.2%) were significantly higher (P<0.05) than that of control group (71.7%). But There were no differences in digestibility of neutral detergent fiber (NDF), nitrogen free extract (NFE) and total digestible nutrients (TDN) among the three treatments. Ruminal pH were no differences between treatments at 30 minute after feeding, and ruminal pH of 1% TMR + Fly-ash group were tended to increase throughout the fermentation periods at 2 hours after feeding. Ruminal ammonia-N of 1% TMR+Fly-ash group (15.39 ㎎/100㎖) were significantly higher (P<0.05) than the other treatments. That of 1% TMR + Buffer group was significantly lower (P<0.05) than the other treatments at 2 hours after feeding. Ruminal total-VFA of 1% TMR + Buffer group were tended to increase throughout the fermentation period. Ruminal total-VFA in all treatments reached the maximum value at 2 hours but indicated low tendency from at 2 hours after feeding. In conclusion, 1% Fly-ash group was increased nutrient digestibility and mainteined optimal rumimal pH (6.2∼6.8) in comparision with other treatments. Alternatively, utilization of Fly-ash will be contributed to reduce the cost of production.
고영두,김재황,김두환,고병두,이수칠,이종찬,김삼철 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.1
This study was carried out to improve utilization of substitute fly-ash in bedding material of animal waste treatments. The amount used of fly-ash used in a pigpen or beef stall was 50% lower than that of existing bedding material of animal waste treatments. From the results, substitution effect of fly-ash put over the floor of the stable became much better. Effects of processed fly ash as a spread straw decreased ammonia(NH3) and Hydrogensulfide (H2S) gas at beef stall, but there was no benefit of replacement terms. Effect of processed fly ash as a spread straw increased 4∼5 times replacement terms more than control NH3 and H2S gas was decreased. A lot of maggots and porasites were grown at sawdust pig farm, but fly ash inhibited to grow maggots and paraeters. In conclusion, as substituting fly-ash for 5% sawdust(DM basis) in making animal waste into a compost with fly ash, we can reduce the sawdust purchasing costs and produce the high quality of a compost, especially a pollutant as NH3 and H2S gas, etc. from the process of biodegradation, and as substituting fly-ash(1,540 won per ton ; can be extended the replacement period of spreading straw approximatively 4∼5 times) for sawdusts(111,000 won per ton) will increase a real income in livestock house.
가축분뇨처리 퇴비로서 석탄회의 이용가치 개발과 적정 혼합비율 결정에 관한 연구
고영두,김재황,김두환,유성오,고병두,이수칠,강경록 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.1
This study was carried out to investigate how to reuse the livestock waste and develop fly ash as a subsitution of sawdust which is used commonly to make compost. Fly ash and sawdust were mixed the ratio of 8 to 2, 7 to 3, 6, to 4, 5 to 5, 4 to 6. 3 to 7 and 2 to 8 after fermentation for 60 days the change of temperature, moisture, pH, organic matter, nitrogen content and C/N ratio were analyzed. The results are as follows; Temperature was reached to maximum (63.5$^{\circ}C$) more quickly in scraper type than in slurry type with adding large sawdust. When fly ash and sawdust were mixed same amount at scraper type and slurry type, moisture was 46.6~53.7% and maintained a good condition for fermentation. pH was showed the range of 7~10 as a mixture of fly ash. Organic matter contents were increased with increasing the added sawdust but did not show any tendency. Nitrogen content was also increased with increasing the amount of added sawdust but did not show any tendency. C/N ratio was increased to 20~60 with increasing the added sawdust, but when sawdust and fly ash were mixed 50:50, there was no significant during fermentation periods. In conclusion, supplementation of fly ash at the level of 50% of sawdust maintained a good condition for fermentation as a livestock waste composting.
석탄회 처리 가축분뇨 퇴비가 옥수수, 호맥 및 알팔파의 생산성에 미치는 영향
고영두,김재황,김두환,유성오,고병구,이수칠,이종찬,김삼철 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.1
This study was carried out to improve utilization of fly ash. Each animal waste was mixed with fly ash and composted This compost used at forage crops with corn, rye and alfalfa to examine to examine the fertilized efficiency and investigated productivity of forage crops, composition of this copmost and effect of fly ash on soil characteristics and composition. Content of organic matte, P2O5, K2O, CaO, MgO, Mn and B at the soil, which is given fly ash, increased. After the test crops were harvested, pH of the soil was maintained about 7 and contents of organic matter, phosphoric aicd, K, Mg, and B was increased at the soil of used fly ash. As fly ash was mixed, each DM yield of corn and rye was increased 10∼13% and 14∼21% especially alfalfa was increased 35% at the soil which is mixed fly ash with cage layer manure. As fly ash was mixed, each Crude protein (CP) of corn and rye was increased 6∼17% and about 29%, especially, as fly and cage layer manure was mixed CP of alfalfa was increased 33%. In conclusion, as fly ash is mixed with anlmal waste and use at forage crops, It makes the soil good and improve the productivity of forage crops.