사과박 , 참깨박 및 계분 혼합비율이 볏짚 사일리지의 품질에 미치는 영향

류영우,고영두,이상무 ( Y . W . Ryu,Y . D . Ko,S . M . Lee ) 한국축산학회 1998 한국축산학회지 Vol.40 No.3

An experiment was conducted to determine the effects of mixing ratio of rice straw(R), apple pomace(A), sesame oil meal(S) and cage layer excreta(C) on feed quality of rice straw silage. Various mixing ratios of the ingedients into silage were used in this study. There were 3 RA silages with mixing ratios of R and A; RA1 of 50 and 50?g RA2 of 40 and 60%, RA3 of 30 and 70%, respectively. The RAS silages 1 through 9 contained R, A and S with mixing ratios of 50+50+10, 50+50+15, 50+50+20, 60+40+10, 60+40+15, 60+40+20, 70+ 30+10, 70+30+15 and 70+30+20, respectively. On the other hand, the RAC silages 1 through 9 consisted of R, A and C with the mixing ratios of 50+50+10, 50+50+20, 50+50+30, 60+40+10, 60+40+20, 60+40+ 30, 70+30+10, 70+30+20 and 70+30+30. The average crude protein and crude fat contents of RAS silage were higher than the other ones(P$lt;0.01). Especially, crude protein content of RAS silages 3 was the highest (14.26%). The crude protein and crude fat contents of RAS silages increased by the addition of sesame oil meal. Crude fiber content was the highest at RA silage 3 (30.14%), but RAC silage 9 was the lowest (20.99%). Crude ash content was the highest at RAC silage 9 (17.72%), but RA silage 1 was the lowest (5.68%). The average NDF, ADF and cellulose contents of RA silages were higher than those of RAS and RAC silages. the average hemicellulose content was the lowest at RAC silage(P$lt;0.01), but its ligin content was the highest. The average pH value of silage was high in the order of RAC $gt; RAS $gt; RA. Acetic acid was high in the order of RAS $gt; RA $gt; RAC. Propionic acid was not detected at RA and RAS silages, but was at the RAC silages. Especially, the 7 and 8 silages of RAS were higher than the others. Lactic acid was high in the order of RAC $gt; RA $gt; RAS. Especially, RAC silage 9 was the highest (6.318%), but RAS silage 4 was the lowest (0.357%).

사과박 , 참깨박 및 계분 혼합 볏짚 Silage 급여가 한우의 육성율 , 채식행동 및 경제성에 미치는 영향

류영우,고영두,이상무 ( Y . W . Ryu,Y . D . Ko,S . M . Lee ) 한국축산학회 1998 한국축산학회지 Vol.40 No.3

This study was conducted to determine the effects of roughages types of R(rice straw), RAS silage[apple pomace 40% + rice straw 60% + sesame oil meal 15%(DM 15% addition of apple pomace + rice straw)] and RAC silage[apple pomace 40% + rice straw 60% + cage layer excreta 30%(DM 30% addition of apple pomace + rice straw)] on daily gain, eating behavior, economical efficiency and carcass characteristics of Korean Native Cattle. The results obtained were as follows: Body weight gain was high in the order of RAC silage $gt; RAS silage $gt; R treatment. Daily gain was the highest at RAC silage treatment as 1.36㎏, but R treatment was the lowest as 1.27㎏. Eating time, ruminating time and bolus number were high in the order of R $gt; RAS silage $gt; RAC silage treatment at 7 months(P$lt;0.05, 0.01), and chewing number was high in the order of R $gt; RAC silage $gt; RAS silage treatment(P$lt;0.05). Eating time, ruminating time, blows number, urinating number and excreting number were lower RAC silage treatment than R and RAS silage treatment at 11 months(P$lt;0.01). Eating time and ruminating time at 15 months were higher RAS silage and RAC silage treatment than R treatment(P$lt;0.01), but bolus number, chewing number urinating number and excreting number were not significantly affected by the treatments. Net income according to the treatments was high in the order of RAC silage(476,498 won) $gt; RAS silage(447,139 won) $gt; R treatment(304,332 won). As mentioned above the results, RAS and RAC silage feeding were highly evaluated about improvement of body weight gain, raughage cost and quantity grade for Korean native cattle.

면양에 있어서 숫 - 계분 Silage 의 영양소 함량 , 소화율 , 질소출납 및 기호성

류영우 ( Y W Ryu ),고영두 ( Y D Ko ),구재윤 ( J Y Koo ),김재황 ( J H Kim ),유성오 ( S O Yoo ),이희석 ( H S Lee ) 한국축산학회 1995 한국축산학회지 Vol.37 No.2

This study was carried out with the purpose to utilize cage layer manure (CLM). Sorghum was ensiled with 30% CLM(sorghum-manure silage, based on dry matter of sorghum) and without CLM(sorghum sire), and the chemical quality of the silages were estimated. Also four sheep(average weight of about 40.6 ㎏) were used to determine the effect of the digestibility, nitrogen balance and voluntary feed intake. Crude protein content of CLM (31.3%) was about 5 times as high as that of sorghum(6.1%). Dry matter and crude protein contents were increased(P$lt;0.05) by supplementation with CLM, while NDF, ADF and gross energy contents were decreased(P $lt;0.05). CLM silage was higher(P$lt;0.05) in pH, total VFA, propionic acid, butyric acid, lactic acid to total acid and NH₃-N to total N. There were no differences in contents of lactic acid between the two silages. Digesdbilities of crude protein, NDF and ADF were significantly (P$lt;0.05) higher in CLM silage. Nitrogen intake, fecal and urinary nitrogen were significantly(P$lt;0.05) higher in CLM silage, but (here were no differences in contents of retained nitrogen between the two silages. Dry matter intake of CLM silage(95.7 g) were significantly (P$lt;0.05) higher than sorghum silage(79.9 g).

Holstein 육성우에 대한 수수 - 계분 Silage 급여가 증체량 , 사료 섭취량 및 경제성에 미치는 영향

류영우 ( Y W Ryu ),고영두 ( Y D Ko ),구재윤 ( J Y Koo ),김재황 ( J H Kim ),유성오 ( S O Yoo ),이희석 ( H S Lee ) 한국축산학회 1995 한국축산학회지 Vol.37 No.3

This study was carried out with the purpose to utilize cage layer manure (CLM). Sorghum was ensiled with 30% CLM(sorghum-manure silage, based on dry matter of sorghum) and without CLM(sorghum silage), and the chemical quality of the silages were estimated. Also Sixteen holstein calves(average weight of about 182㎏) were used to determine the effects on the body weight gain, feed conversion, feed intake and feed cost. Sorghum silage and sorghum-manure silage resulted in a good-quality silage in the view of CP and lactic acid concentrations. Total body weight gain for 90 days of holstein calves fed sorghum-manure silage(113.46㎏) was significantly(P$lt;0.05) higher than that fed sorghum silage(93.25㎏), and daily gtun of sorghum-manure silage(1.26㎏) was also significantly(P$lt;0.05) 0.2㎏ increased compared to that of sorghum silage(1.04㎏). Feed conversion of sorghummanure silage was better(4.79) than that fed sorghum silage(5.45). Feed cost per body weight gain(㎏) of sorghum-manure, silage(2,292 won) was lower, and this expense was lower than that fed sorghum silage(3,617 won) by about 36% of the feed cost. Namely, sorghum-manure silage was highly evaluated about improvement of body weight gain and feed conversion for calf feed.

Formic Acid 및 농후사료 첨가가 Silage 의 품질에 미치는 영향

고영두,문영식,류영우 ( Y . D . Ko,Y . S . Moon,Y . W . Ryu ) 한국축산학회 1986 한국축산학회지 Vol.28 No.1

This experiment was conducted to investigate the effects of formic acid and concentrates addition on moisture content, crude protein and pH of orchardgrass silage. The results obtained were summarized as follows: Moisture contents of silage were no significant differences between 21 and 60 days of ensiling periods, but significantly (P$lt;0.05) decreased as the levels of formic acid and concentrates addition increased. Crude protein content significantly (P$lt;0.01) increased in the formic acid treatment, but was no significant differences between the addition levels of concentrates. pH significantly (P$lt;0.01) increased with increasing concentrates by the aerobic deterioration of silage according to the passage of fermentation time in all the groups, and also increased in the control in treatment of concentrates addition and formic acid treatment.

볏짚의 사료가치 증진을 위한 요소수용액의 처리기간과 저장온도에 관한 연구

고영두,김재황,유성오,류영우,강한석,송영민,김두환 ( Y . D . Ko,J . H . Kim,S . O . Yoo,Y . U . Ryu,H . S . Kang,Y . M . Song,D . H . Kim ) 한국축산학회 1997 한국축산학회지 Vol.39 No.3

This experiment was carried out to enhance the feed value of rice straw and utilization of urea as ruminant feedstuffs. The test animals were alloted depending upon three different treatment periods(7, 14 and 21 days), three different temperature(10, 20 and 30~), and two different urea concentration(5% or 10%) with 30% urea solution in the rice straw. The treated rice straw was then sun-dried, and the chemical composition of the treated rice straw was analyzed. Also, 0.2% pepsin-HCl solution and 2.5% cellulase were used to determine the in vitro dry matter digestibility. Eight Corriedale sheep(about 40 ㎏, ♂) were used to determine the NH,-N and palatability. Crude protein content of 5% level treatment with 30% urea solution was significantly(P$lt;0.05) increased in the treatment periods of 14 day and 21 day. NDF content did not significantly(P$gt;0.05) differ among treatment periods without regard to 5% or 10% level treatments with 30% urea solution, but ADF content of 21 day treatment period with 5% level and 7 day treatment period with 10% level was significantly(P$lt;0.05) lower than those of other treatment periods. Total N content did not significantly(P$gt;0.05) differ among Treatment periods, but NH₃-N content of the treatment with 10% level tended to be decreased depend on increasing with treatment periods. In vitro DDM of 5% or 10% treatment levels with 30% urea solution tended to increase in the treatment period of 7 day. Palatability of 5% or 10% levels with 30% urea solution did not differ(P$gt;0.05) among treatment periods. Crude protein content of 30℃ storage temperature with 5% or 10% levels was significantly(P$lt;0.05) higher than that of the other storage temperature, NDF and ADF contents did not significantly(P$gt;0.05) differ among storage temperature with 5% or 10% levels. Total N content did not significantly(P$gt;0.05) differ among storage temperature. But NH₃-N content of 10℃ storage temperature with 5% level was significantly (P$lt;0.05) higher than that of the other storage temperature. In vitro DDM of 5% treatment levels with 30% urea solution was significantly(P$lt;0.05) increased in the treatment with 30℃ storage temperature, but palatability of 5 or 10% treatment levels with 30% urea solution did not significantly(P$gt;0.05) differ among storage temperature.

면양에 있어서 수수 - 계분 Silage 의 반추위내 발효특성

고영두 ( Y D Ko ),류영우 ( Y W Ryu ),김재황 ( J H Kim ) 한국축산학회 1995 한국축산학회지 Vol.37 No.2

This study was investigated fermentation characteristics in the rumen for the purpose to utilize cage layer manure (CLM). Sorghum was ensiled with 30%r CLM(sorghum-manure silage, based on dry matter of sorghum) and without CLM(sorghum silage), and the fistulated four Corriedale rams(average weight of about 40.6 ㎏; ♂) were used to determine the effect in the rumen. Total ruminal VFA in sheep fed CLM silage was significantly(P$lt;0.05) increased compared to that fed sorghum silage, and peaked(11.97 mmol/100㎖) at 2 hours after feeding. Ruminal ammonia nitrogen concentration in sheep fed CLM silage was significantly(P$lt;0.05) higher than that of sheep fed sorghum silage. The average ruminal pH values for sheep was significantly different, but was drastically reduced (P$lt;0.05) at 0.5 hours after feeding, and waa constantly level to 1 hours after feeding. Ruminal lactic acid peaked at 0.5 hours after feeding, and was drastically reduced at 0.5 hours after feeding. Ruminal acetic acid in sheep fed CLM silage was significantly(P$lt;0.05) increased compared to that fed sorghum silage. Ruminal propionic acid concentration was peaked at 2 hours after feeding(P$lt;0.05). However, this acidity of CLM silage(2.25 mmol/100㎖) was maticedly higher(P$lt;0.05) than that of the sorghum silage(1.78 mmol/100㎖). Ruminal butyric acid of sheep fed CLM silage was markedly higher (P$lt;0.05) than that fed sorghum silage.

옥수수 - 산란계분 SILAGE 의 면양체내 소화율과 질소출납 및 반추위 성상에 관한 연구 2. 옥수수 - 산란계분 SILAGE 의 면양체내 반추위 성상

고영두(Y . D . Ko),류영우(Y . U . Ryu),강한석(H . S . Kang),김재황(J . H . Kim),유성오(S . O . Yoo),강경록(K . R . Kang) 한국영양사료학회 1996 韓國營養飼料學會誌 Vol.20 No.5