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RISS 인기검색어
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- 저자 : 리해종 ( Y . C . Rhee (검색결과 2 건)
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한우의 번식이 조해되는 요인의 분석연구 ( 강원지역을 중심으로 ) 제1보 빈우의 초산령과 성빈우의 분만간격 및 불임우의발생이 소번식에 미치는 영향
이영철,리해종 ( Y . C . Rhee,H . J . Rhee ) 한국축산학회 1974 한국축산학회지 Vol.16 No.3
This study was an attempt to establish the basic materials for the first parturition age. the parturition interval, ana the sterility, in relation to the factors control lng the increase of the Korean cattle in order to improve the fertilization rate and to supply the meat which is needed in large amount as the result of national income elevation. The results of analyses on the prerequisite of reproductive failure of Korean native cattle were as follow; 1. The fertilization talc of Korean cattle was higher in love land area than in up-land. 2. The fertilization rate of Korean cattle was varied according to its delay of first parturition age, relative length of parturition interval of adult cow and its occurrence frequency of sterile cattle. 3. among the basic factors which decrease breeding ability of Korean cattle, the first was the delay of first parturition, the second was the extension of parturition interval and the third was the state of sterile cattle. 4. The fertilization rate of Korean cattle decreased as the feeding period was longer and such phenomena occurred more markedly in up-land area than in low land. Parturition interval of calving time in feeding period was longer in up-land area than in low land in general and the variation of parturition interval showed similar trend.
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이영철,홍병주,리해종 ( Yeong Chul Rhee,Beong Ju Hong,Hae Jong Rhee ) 한국축산학회 1976 한국축산학회지 Vol.18 No.1
Two experiments were conducted using the broiler chick to determine the nutritive value of tapioca root meal in balanced chick rations. The results obtained were summarized as follows: 1. Crude protein and fat contents of tapioca root meal were very low as the value 2.40 and 0.35 percent respectively, on the other hand NFE content (81.24%) and ME value 3.430 ㎉/gm) were observed vary high. 2. When the ration was balanced with respect to protein and amino acids, tapioca root meal, at a level of 20 percent of the broiler chick ration, satisfactorily replaced corn. 3. Supplementation of the high tapioca ration (40%) with 0.15-0.30 percent of methionine and/or 0.10-0.25 percent of Na₂SO₄ largely promoted the growth of broiler. This effects are likely shown that sulfur is involved in cyanide detoxication of tapioca root meal with the formation of thiocyanates and this could have put a greater demand on methionine or Na₂SO₄ to provide sulfur for detoxication of the cyanide.
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