γ-aminobutyric acid 의 첨가가 비육기 거세한우의 성장특성, 혈액성상 및 도체특성에 미치는 영향

서지정보

· 발행기관 : 강원대학교 동물자원공동연구소
· 수록지 정보 : 동물자원연구 / 34권 / 4호
· 저자명 : 손기활, 박병기, 안준상, 이향자, 신종서

목차

Ⅰ. 서론
Ⅱ. 재료 및 방법
1. 공시동물, 실험설계 및 사양관리
2. 조사항목 및 방법
3. 통계처리
Ⅲ. 결과 및 고찰
1. 성장특성
2. 혈액성상
3. 도체특성
3. 도체특성
Ⅳ. 요약
사사
Ⅴ. 참고문헌

영어초록

γ-aminobutyric acid (GABA) is a natural stress-reducing substance and is actively used as a human health supplement. However, minimal research has been conducted on its use in cattle. This study was conducted to evaluate the effects of GABA on the growth performance, complete blood count, blood metabolites, and carcass characteristics of fattening Hanwoo steers. Twenty-one fattening steers were randomly assigned to one of three treatments: control (basal diet: concentrate feed + rice straw), T1 (basal diet + GABA supplement at 0.8% of feed/head/day), and T2 (basal diet + GABA supplement at 1.6% of feed/head/day). Feed intake and conversion ratio did not differ among the treatments. However, the average daily gain during the early fattening period increased linearly to 0.80 kg, 0.86 kg, and 0.92 kg in the control, T1, and T2 groups (p<0.05). Plasma γ-glutamyl transferase (37.5, 58.2, 42.8 U/ℓ) and creatinine (1.32, 1.34, 1.49 ㎎/㎗) levels in the GABA supplement group were increased compared to those in the control group. The carcass weight (422.7, 427.1, 454.1 kg), rib eye area (86.67, 92.57, 91.14 cm2), and marbling score (3.67, 4.29, 4.14) were numerically higher in the GABA supplement group than in the control group. Thus, GABA supplementation positively affected the average daily gain and carcass characteristics of Hanwoo steers. However, the effect of the GABA supplement level of GABA was small, and further research using rumen-protected coating technology on GABA is necessary.

참고자료

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