표제지
목차
Ⅰ. 서론 10
Ⅱ. 연구사 12
1. Probiotics(생균제)와 DFM 12
2. 작용기작 13
1) 경쟁에 의한 장 내 부착 13
2) 항균효과 14
3) 면역반응 15
3. Bacterial DFM과 제 1위 발효 17
4. Bacterial DFM과 어린 송아지 19
5. Bacterial DFM과 비육밑소(송아지) 21
6. Bacterial DFM과 비육우 22
7. Bacterial DFM과 대장균 O157 26
Ⅲ. 재료 및 방법 28
1. 시험동물 및 시험설계 28
2. 시험기간 및 장소 28
3. 시험사료 및 생균제 28
4. 생균제의 급여기간, 급여량 및 급여방법 28
5. 사료급여 프로그램 33
6. 사양관리 33
7. 도체 특성 조사 33
8. 시료 분석 37
9. 수익성 분석 37
10. 통계처리 37
Ⅳ. 결과 및 고찰 38
1. 육성기의 비육능력 38
2. 비육 전기의 비육능력 43
3. 비육 후기의 비육능력 48
4. 전기간의 비육능력 53
5. 도체성적 59
6. 수익성 분석 62
Ⅴ. 요약 64
참고문헌 66
ABSTRACT 79
감사의 글 82
Table 1. Chemical composition of concentrates used in the experiment 30
Table 2. Chemical composition of roughages used in the experiment 31
Table 3. Component and bacterium count of Bio-Three probiotic guaranteed by the maker1) 32
Table 4. Feeding program for Hanwoo steers used in the experiment 35
Table 5. Effect of feeding a direct-fed microbials on performance of growing Hanwoo steers 40
Table 6. Effect of feeding a direct-fed microbials on crude protein intake and its conversion ratio of growing Hanwoo steers 41
Table 7. Effect of feeding a direct-fed microbials on TDN intake and its conversion ratio of growing Hanwoo steers 42
Table 8. Effect of feeding a direct-fed microbials on performance of 45
Table 9. Effect of feeding a direct-fed microbials on crude protein intake and its conversion ratio of fattening Hanwoo steers 46
Table 10. Effect of feeding a direct-fed microbials on TDN intake and its conversion ratio of fattening Hanwoo steers 47
Table 11. Effect of feeding a direct-fed microbials on TDN intake and its conversion ratio of finishing Hanwoo steers 50
Table 12. Effect of feeding a direct-fed microbials on crude protein intake and its conversion ratio of finishing Hanwoo steers 51
Table 13. Effect of feeding a direct-fed microbials on TDN intake and its conversion ratio of finishing Hanwoo steers 52
Table 14. Effect of feeding a direct-fed microbials on performance of Hanwoo steers during the entire period 56
Table 15. Effect of feeding a direct-fed microbials on crude protein intake and its conversion ratio of Hanwoo steers during the entire period 57
Table 16. Effect of feeding a direct-fed microbials on TDN intake and its conversion ratio of Hanwoo steers during the entire period 58
Table 17. Effect of feeding a direct-fed microbials on the carcass characteristics of Hanwoo steers 61
Table 18. Effect of feeding direct-fed microbials on the profits of Hanwoo steers 63
Fig 1. The graphically-reformed feeding program 36