초록 ▼

위와 같은 목적을 달성하기 위하여 본 연구에서는 4∼6개월령의 수송아지 19두를 공시하여 먼저 곡류함량 10%이하인 인공건초(영천축협)또는 순수한 건초만으로 약 2개월간 예비사육을 실시한 다음 실험군과 대조군으로 나누어 실험1군에는 적응우 1위내용액 1,500㎖씩을 2회 위관을 사용하여, 실험2군에는 동량의 1위내용액을 투관침을 사용하여, 그리고 실험3군에는 1위내용액에서 분리한 그람음성균 배양물 1,500㎖씩을 투관침을 사용하여 1위내에 이식하였다. 이식 후 3일째부터는 곡류함량을 80%로 조정한 고곡류사료를 1∼2개월간 무제한

위와 같은 목적을 달성하기 위하여 본 연구에서는 4∼6개월령의 수송아지 19두를 공시하여 먼저 곡류함량 10%이하인 인공건초(영천축협)또는 순수한 건초만으로 약 2개월간 예비사육을 실시한 다음 실험군과 대조군으로 나누어 실험1군에는 적응우 1위내용액 1,500㎖씩을 2회 위관을 사용하여, 실험2군에는 동량의 1위내용액을 투관침을 사용하여, 그리고 실험3군에는 1위내용액에서 분리한 그람음성균 배양물 1,500㎖씩을 투관침을 사용하여 1위내에 이식하였다. 이식 후 3일째부터는 곡류함량을 80%로 조정한 고곡류사료를 1∼2개월간 무제한 급식시키면서 적응효과를 확인하였다.
적응효과를 확인하기 위하여서는 (가) 임상증상, (나) 증체량, (다) 사료섭취량과 사료효율, (라) 1위내용액의 성상 - pH, 원충수, 세균수, 그람음성균:그람양성균의 비율, 냉장고에서의 원충의생존기간, (마) 혈액학치 - 혈구용적, 총백혈구수, (바) 혈액화학치 - T-protein, albumin, T-bilirubin, GOT, GPT, LDH, BUN, Creatinine, CPK, glucose, amylase, (사) 혈액가스치 - pH, PCO2, PO2, Hbd, HCO3, TCO2 등을 검사하였다.

Abstract ▼

In feedlot cattle the abrupt change of diet from roughage to a large quantity of grain for the purpose to improve production often results in increased occurrance of rumen acidos is or acute carbohydrate engorgement, enterotoxemia, bloat, diarrhea, liver abscess and laminitis or robot disease. The c

In feedlot cattle the abrupt change of diet from roughage to a large quantity of grain for the purpose to improve production often results in increased occurrance of rumen acidos is or acute carbohydrate engorgement, enterotoxemia, bloat, diarrhea, liver abscess and laminitis or robot disease. The common management practice to control these problem is to increase the amount of concentrates in the diet in astepwise manner until the animals are adapted to a high-grain ration. However this practice requires at least about 3 weeks adaptation period and specially prepared adaptation rations which contain various amount of concentrates. Present experiment was undertaken in order to findout the more simple and rapid adaptation method of cattle to a high grain ration.
Nineteen Korean calves aging from four to six month were fed artifical hay(Yongchon Chuk- Hyup, Korea) which contains 10% of concentrates or alfalfa and rye grass hays for two months and randomly alloted to three experimental groups and two control groups. The experimental group- 1 was inoculated by stomach tube for two days with 1,500㎖/day of ruminal fluid from fished Korean beef cattle that had been previously adapted to a high- energy ration. The experimental group- 2 was inoculated by trocalization for two days with the same ruminal fluid. The experimental group-3 was inoculated by trocalization with 1,500㎖/ day of bacterial culture which contained 2 109/㎖ of Gram- negative bacteria derived from adapted ruminal fluid. The two control groups were treated with normal saline solution by the same methods. All animals were fed high-energy ration that contained 80% of grain ad libitum for 30∼74 days beginning on the third of the treatment. The effect of the inoculation on the adaptation was observed clinicopathologically with the following results ;
All of the experimental calves inoculated with the ruminal fluid or Gram-negative bacterial culture derived from adapted cattle did not show any signs of rumen acidos is or other related diseases, while most of the control calves did show diarrhea and bloat and a calf laminitis.

목차 Contents

• 표지...1
• 제출문...5
• 요약문...6
• SUMMARY...9
• CONTENTS...12
• 목차...13
• 제1장 서론...13
• 제1절 연구개발의 목적과 범위...14
• 제2장 재료 및 방법...16
• 제1절 연구재료...17
• 제2절 연구방법...18
• 제3장 연구결과...21
• 제1절 임상증상...21
• 제2절 사료섭취량, 중체량 및 사료효율...22
• 제3절 1위액의 성상...28
• 제4절 혈액검사 성적...33
• 제5절 부검 소견...37
• 제6절 원충의 활동성...38
• 제4장 고찰...38
• 참고문헌...42