http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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$gt;0.05) differ among storage temperature.
Holstein 육성우에 대한 수수 - 계분 Silage 급여가 증체량 , 사료 섭취량 및 경제성에 미치는 영향
류영우 ( Y W Ryu ),고영두 ( Y D Ko ),구재윤 ( J Y Koo ),김재황 ( J H Kim ),유성오 ( S O Yoo ),이희석 ( H S Lee ) 한국축산학회 1995 한국축산학회지 Vol.37 No.3
This study was carried out with the purpose to utilize cage layer manure (CLM). Sorghum was ensiled with 30% CLM(sorghum-manure silage, based on dry matter of sorghum) and without CLM(sorghum silage), and the chemical quality of the silages were estimated. Also Sixteen holstein calves(average weight of about 182㎏) were used to determine the effects on the body weight gain, feed conversion, feed intake and feed cost. Sorghum silage and sorghum-manure silage resulted in a good-quality silage in the view of CP and lactic acid concentrations. Total body weight gain for 90 days of holstein calves fed sorghum-manure silage(113.46㎏) was significantly(P$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.