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RISS 인기검색어
- 검색키워드
- 저자 : 정정수 ( K . S . Sohn (검색결과 3 건)
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옥피사료의 개발에 관한연구 2 . 농후사료에 대한 옥피사료의 일부대치가 소화율 및 육성한우의 성장에 미치는 효과
한인규,손광수,정정수,박홍석 ( In K . Han,K . S . Sohn,C . S . Chung,H . S . Park ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6
An in vivo digestibility experiment and two feeding trials have been conducted to investigate the nutritive value of corn bran-based concentrate feed for growing Korean cattle. In the first feeding trial with twenty Korean cattle weighing 320-340 ㎏, a corn bran-based concentrate feed containing 40% corn bran was used at 10, 20, or 30% level of total concentrate fed. These corn bran feed and the control commercial beef feed mixture were fed with rice straw as a roughage source for 56 days. There were no significant difference in concentrate or straw intake, body weight gain and over-all feed efficiency, however, the concentrate mixture containing 20% corn bran diet showed significantly(P$lt; 0.05) higher feed efficiency than others when the concentrate mixture intake alone was considered. For the digestibility trial with eight wether lambs and the second feeding trial with twenty Korean cattle weighing 200-250 ㎏, the feeds containing 50, 40 or 30 % corn bran were used at a 20 % level of the total concentrate fed. It was suprising that the digestibility and TDN value of the feed containing 50% corn bran were comparable to those of the control and better than those of the diets containing 40 or 30% corn bran treatment. Results of 140 days of feeding trial also showed that over-all feed efficiency for the groups fed diet containing 50% corn bran, considering the concentrate and rice straw intake together, was better than any other corn bran treatments (P$lt;0.05), although there was no significant difference in concentrate or straw intake, body weight gain, or feed efficiency of concentrate intake alone among treatments and the control. Daily body weight gain and over-all feed efficiency of the control, the diets containing 50, 40 and 30% corn bran treatment, respectively were 0.80㎏ and 6.80, 0.83㎏ and 6.66, 0.77㎏ and 7.13 and 0.73 ㎏ and 7.03 respectively. These results suggest that, if nutrients are properly supplemented, corn bran can be satisfactorily used up to 50% in the corn bran-based concentrate feed which will be fed at a 20 % level of total concentrate with poor quality roughage like rice straw.
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옥피사료의 개발에 관한연구 1 . 옥피사료의 반추 미생물에 의한 in vitro 발효 및 in vivo 소화율 및 질소균형에 미치는 영향
한인규,손광수,정정수,박홍석 ( In K . Han,K . S . Sohn,C . S . Chung,H . S . Park ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6
In an effort to develope a corn bran-based concentrate feed for growing Korean cattle, corn bran was used at the levels of 50%, 40, and 30% and the rest was supplemented with proper nutrients. Energy and nitrogen were supplemented with corn starch, molasses, corn germ meal and urea. Vitamines and mineral sources were also added in the mixture. As a preliminary step of evaluating the feeding value of these corn bran feed, an in vitro fermentation and an in vivo digestibility experiment were conducted. The results obtained were as follows 1. During the first 12 hours of in vitro fermentation production of acetic, propionic and butyric acid from the feed containing 50% corn bran was significantly (P$lt;0.05) lower than the control or other cornbran feeds. However, after 24 hours of fermentation there was no difference in the production of these acids except acetic and propionic acid that were significantly (P$lt;0.05) higher for the feed containing 30% corn bran than other. 2. Digestibility of crude fiber and ash was higher and ether extract v, as lower for the corn bran feeds than the control feed in general. As the corn bran level was lowered, digestibility of crude protein and nitrogen free extract was increased but digestibility of crude fiber and ether extract was decreased. 3. Total digestible nutrients (TDN) of the control, the feeds containing 50%, 40% and 30% corn bran were 56.68, 55.59, 58.02 and 58.27%, respectively. As the corn bran level was lowered, digestible nitrogen free extract was increased and that made TDN value higher but significantly lowered digestible crude fiber of the feed containing 30%, corn bran made its TDN value similar to that of the feed containing 40% corn bran. 4. During the collection period of the digestion trial, fecal excretion of nit rogen was lowest for the feed containing 30 % corn bran but urinary excretion of nitrogen was highest for the diet containing 50% corn bran. Nitrogen retention was about 12.0% of intake for the diet containing 50 % corn bran and about 20.0 % for the rest corn bran feeds and control feed. 5. Over all results, considering the fact that the digestibility of crude fiber was depressed and scouring problem was observed with the diet containing 30% corn bran, indicate that corn bran can be succesfully used at the level of 40% on more in a corn bran-based concentrate mixture for cattle feeding.
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사료중 Flaxseed 가 돼지의 성장과 돈육의 지방산 조성에 미치는 영향
손광수,김명곤,정정수 ( K . S . Sohn,M . K . Kim . C . S . Chung ) 한국축산학회 1997 한국축산학회지 Vol.39 No.1
The objective of this study was to determine the effect of dietary flaxseed on pig growth performance and fatty acid composition of pork. Eighty-four gills weighing approximately 85㎏ were fed diets containing 0 (control diet) or 8% flaxseed for the final 28 days prior to slaughter. Flaxseed treatment did not affect any growth performance of finishing pips(P$gt;0.1). However, pigs fed flaxseed diet had significantly(P$lt;0.05) higher amounts of omega-3 fatty acid in loin and belly and resulted in a reduction in the ratio of omega-6 to omega-3 fatty acid from 12:1 to 4.5:1(P$lt;0.05).
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