한국 재래산양의 이유 후 초기사료개발을 위한 기초 연구

조익환,황보순,손장호,송해범,안종호,최일신,이주삼 ( l . H . Jo,S . Hwangbo,J . H . Son,H . B . Song,J . H . Ahn,I . S . Choe,J . S . Lee ) 한국영양사료학회 1998 韓國營養飼料學會誌 Vol.22 No.3

예취빈도가 다른 조건에서 무기태 질소와 액상구비의 시용이 Reed canarygrass의 건물수량과 질소이용효율에 미치는 영향

이주삼,조익환,Lee, J.S.,Jo, I.H. 유기성자원학회 1994 유기물자원화 Vol.2 No.2

In order to investigate the effects of application rates of mineral N and cattle slurry on the dry matter yield of Reed canarygrass grown in different cutting frequency, was was cernpared for the efficiency of N utilization. Annual rates of mineral N and cattle slurry N of 0 (control), 90kg, 180kg, 270kg and 360kg/ha in 3 cuttings, 0, 120kg, 240kg, 360kg and 480kg/ha in 4 cuttings, and 0, 150kg, 300kg, 450kg and 600kg/ha were applied as urea and cattle slurry in 5 cuttings, respectively. The results were summarized as follows: 1. The annual dry matter yields were increased with application rates of mineral N and cattle slurry. The annual dry matter yields of mineral N obtained were 14.4 ton/ha(ranged from 10.46 ton to 16.91 ton/ha) in 3 cuttings, 13.88 ton/ha(ranged from 9.91 ton to 16.53 ton/ha) in 4 cuttings and 15.98 ton/ha(ranged from 12.0 ton to 18.25 ton/ha) in 5 cuttings. The annual dry matter yields of cattle slurry obtained were 12.14ton/ha(ranged from 8.92 ton to 11.79ton/ha) in 3 cuttings, 10.81ton/ha(ranged from 8.92 to 11.79 ton/ha) in 4 cuttings and 12.98ton/ha(ranged from 10.68 ton to 14.85ton/ha) in 5 cuttings. 2. Relative dry matter yield of cattle slurry as compared to mineral N were 84.3%, 77.9% and 81.2% in 3, 4 and 5 cuttings. 3. Average increase in dry matter production(kgDM/kgN) tended to decrease with application rates of mineral N and cattle slurry, and higher cutting frequencies. Average increase in dry matter production obtained were higher values at rates of 30kg/ha/cut in both of mineral N and cattle slurry. Average increase in dry matter production to mineral N were 23.9kg, 18.8kg and 15.2kgin 3, 4 and 5 cuttings, respectively. 4. Average increase in total nitrogen yield(kgTN/kgN) to mineral N obtained were 0.46kg at rates of 60kg/ha/cut in 3 cuttings, and 0.45kg and 0.40kg at rates of 30kg/ha/cut in 4 and 5 cuttings. 5. Average increase in dry matter production(kgDM/kgN) to cattle slurry obtained were 13.7kg and 19.5kg at rates of 30kg/ha/cut in 3 and 4 cuttings, and 9.7kg at rates of 60kg/ha/cut in 5 cuttings. 6. Average increase in total nitrogen yield(kgTN/kgN) to cattle slurry was not concern to the rates of application. Average increase in total nitrogen yield to cattle slurry obtained were 0.11kg, 0.20kg and 0.21kg in 3, 4 and 5 cuttings. 7. Relative average increase in dry matter production of cattle slurry as compared to mineral N were 33.1%, 52.1% and 50.0% in 3, 4 and 5 cuttings. Relative average increase in total nitrogen yield of cattle slurry as compared to mineral N were 28.9%, 51.3% and 55.3% in 3, 4 and 5 cuttings. 예취빈도가 다른 조건에서 무기태 질소와 액상구비의 시용수준이 Reed canargrass 의 건물수량에 미치는 영향을 액상구비의 질소이용효율을 중심으로 검토하였다. 무기태 질소의 시용에 대한 액상구비의 상대건물수량은 연간 3회 예취구에서 84.3%, 4회 예취구에서 77.9%, 그리고 5회 예취구에서 81.2%를 나타내어 액상구비의 시용효과가 높았다. 무기태 질소의 건물생산효율(kgDM/kgN)은 모든 예취구에서 30kg/ha/cut 수준에서 가장 높았으며, 예취빈도에서는 3회 예취구가 질소 1kg당 23.9kg의 건물수량을 나타내어 다른 예취구보다 높았다. 그러나 전질소량(kgTN/kgN) 의 증가에서는 예취빈도에 따른 차이가 인정되지 않았다. 액상구비의 건물생산효율(kgDM/kgN) 은 3회와 4회 예취구에서는 30kg/ha/cut 수준, 5회 예취구에서는 60kg/ha/cut 수준에서 가장 높았으며, 전질소량(kgTN/kgN) 에서는 3회 예취구에서 0.11kg이었으나, 4회와 5회 예취구에서는 20kg 이상이었다. 무기태 질소에 대한 액상구비의 상대건물생산효율은 3회 예취구에서 33.1%, 4회 예취구에서 52.1%, 5회 예취구에서 50.0%였으며, 상대전질소량은 3회 예취구에서 28.9%, 4회 예취구에서 51.3%, 그리고 5회 예취구에서 55.3%를 나타내었다.

사료의 에너지 수준이 육성기 흑염소의 발육과 육질에 미치는 영향

최순호 ( S. H. Choi ),황보순 ( S. Hwangbo ),김상우 ( S. W. Kim ),김영근 ( Y. K. Kim ),상병돈 ( B. D. Sang ),명정환 ( J. H. Myung ),허삼남 ( S. N. Hur ),조익환 ( I. H. Jo ) 한국동물자원과학회 2007 한국축산학회지 Vol.49 No.4

가용성 탄수화물이 반추위 발효특성과 미생물 성장에 미치는 영향

장문백,맹원재,안종호,김현진,조익환,이성훈 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.5

'this study was conducted to investigate the effects of soluble carbohydrate on ruminal fermentation and microbial growth in continuous culture system. It was consisted of two experiments and the results of this study are as follows. First experiment was conducted to investigate incorporating pectin into the basal diet to assess effects on its ruminal fermentation and bacterial mass yield. There were no significant differences (P$gt;0.05) in rumen parameters {rumen pH, total lactate, soluble carbohydrate and volatile fatty acids (VFAs)) except for ruminal NH₃-N concentration. Ruminal NH₃-N was significantly decreased with increasing pectin levels (P$lt;0.05). Although total volatile fatty acid decreased with the increase of pectin level, branched chain fatty acid tended to increase compared with control (P$gt;0.05). Although dietary pectin inclusion did not significantly influence bacterial mass yield, reduced NH₃-N in the effluent and increased NAN flow (P$lt;0.01) was observed. Fiber digestibility trended to increase with inclusion of pectin. Second experiment was conducted to investigate the effects of soluble carbohydrate sources on ruminal fermentation and microbial growth. The treatments were beet pulp (BP). apple pomace (AP) and citrus pulp (CP) and each of them was incorporated at 10% level into the diet. (as fed base) and formulated to be isonitrogenous with urea. BP was lower than AP and CP in pectin content. Although there were no significant differences in ruminal fermentation characteristics. ruminal pH was lower in AP and CP than BP (P$gt;0.05). Ruminal NHS N concentration was highest in CP among the treatments. Bacterial mass yield and NAN flow were higher in AP and CP than those of BP. Fiber digestibility was not significantly different among treatments, but was higher in AP and CP than that of BP (P$gt;0.05). Overall. ruminal microbes efficiently captured NH₃-N which was produced from degradation of protein using dietary soluble carbohydrate, and also increased NAN flow.

한국재래산양의 육성사료 개발을 위한 농산 부산물 중 사과박과 미강의 이용

황보순,안종호,이주삼,조익환 한국영양사료학회 1999 韓國營養飼料學會誌 Vol.23 No.4

본 실험에서는 볏짚, 사과박, 미강 등의 농산부산물 및 시판사료의 혼합 비율을 A구는 60:0:0:40, B구는 60:0:30:10, C구는 30:30:30:10, D구는 0:60:30:10으로 조제하여 한국 재래산양에게 급여하였다. 사료섭취량과 영양소 소화율 및 제 1위내 발효 성상을 조사하였으며 이에 따른 재래산양의 육성사료로서 농산부산물의 활용 가능성을 제시하고자 실시하였다. 그 결과를 요약하면 다음과 같다. 1. 시험사료의 화학적 조성분은 조단백질 함량이 8.2∼9.5%이었고 ADF와 NDF 함량은 A구가 각각 32.2와 65.8%로 가장 높았고 D구가 l8.3와 36.5%으로 가장 낮은 경향을 보였으나, 조지방과 NSC는 D구가 9.2와 39.5%로 가장 높았다. 2. 1일 두당 건물섭취량은 A, C 및 D구가 각각 455.6, 446.5 및 418g으로 B구의 313.1g 보다 유의하게 높았다. 3. 건물, 유기물, 조단백질, ADF 및 NDF 소화율은 ADF와 NDF 함량이 적고 NSC 함량이 높은 사과박 혼합구가 높았다. 4. 질소 축적량과 축적율은 사과박 혼합구가 높았고 B구가 가장 낮았다. 5. pH 및 NH₃-N농도는 각각 6.1∼6.8, 22.6∼24.4㎎/100㎖의 범위로서 처리구간 pH의 유의한 차이는 없었으나 사과박 혼합구에서 NH₃-N 농도가 유의하게 높았다. 6. Acetate와 propionate의 비율은 사과박 혼합구가 낮게 나타났다. In this study, rice straw, apple pomace and rice bran of agricultural by-products and commercial diets were mixed and fed to Korean native growing goats in 4 different ratios (A 60:0:0:40, B 60:0:30:10, C 30:30:30:10, D 0:60:30:10). Dry matter intake, digestibilities of nutrients and ruminal fermentation characteristics were investigated and using those data, the possibilities of application of agricultural byproducts in Korean native goats were suggested. The results are as follows. 1. Crude protein contents of experimental diets in 4 different treatments were similar in the range of 8.2∼9.5%. The contents of ADF(acid detergent fiber) and NDF(neutral detergent fiber) were highest in A (32.2, 65.8%) and lowest in D (18.3, 36.5%). Ether extracts and NSC (non-structural carbohydrates) were highest in D (9.2, 39.5%). 2. Dry matter intakes per head and day were significantly higher in A, C and D (455.6, 446.5, 418g) than 313.1g of B. 3. Digestibilities of dry matter, organic matter, crude protein, ADF and NDF were higher in apple pomace treatments that contained higher NSC and less ADF and NDF than rice straw treatments. 4. Nitrogen retention was higher in apple pomace treatments wheras that of B was lowest among all treatments. 5. pH values of 6.1∼6.8 were similar in all treatments however NH₃-N concentrations in the range of 22.6∼24.4 ㎎/100㎖ were significantly higher in apple pomace treatments. 6. A/P ratios (Acetate/Propionate ratio) were lower in apple pomace treatments than those of other treatments