지엽류 급여가 흑염소의 발육 및 육질에 미치는 영향

Abstract

지엽류 급여가 흑염소의 발육 및 육질에 미치는 영향을 구명하기 위하여 체중 13kg 내외의 4개월령 흑염소 수컷 28두를 공시하여 처리구별로 각각 7두씩 배치하여 농후사료와 함께 지엽류를 급여한 결과는 다음과 같다. 일당증체량은 참나무지엽구가 45.3g으로 다소 높은 경향이었고 소나무지엽구와 발효지엽구는 비슷하였다. 일일 조사료 섭취량은 참나무지엽구가 건물 197g이었고 발효지엽구가 74g이었다. 증체 g당 사료요구율은 참나무지엽구가 11.0g이었고 소나무지엽구는 15.1g이었다. 지엽류를 급여한 흑염소의 혈청 화학치는 영양장애나 체내대사에 이상이 없는 것으로 나타났다. 도체율은 45.1~46.2%이었고 정육율은 55.2~55.9%로 처리구간에 비슷하였으며 고기의 일반조성분인 조단백질과 조회분은 처리구간에 비슷하였고 조지방은 소나무지엽구와 발효지엽구가 볏짚구보다 낮았으나(p〈.05) 참나무지엽구와는 비슷하였다. 육질의 물리적 특성인 전단력, 가열감량은 소나무지엽구와 발효지엽구가 볏짚구보다 낮았으며(p〈.05) 지엽류 간에는 비슷하였다. 다즙성, 연도 그리고 향미는 소나무지엽구가 볏짚구보다 우수하였으며(p〈.05)지엽류 급여구간에는 비슷하였다. Effects of feeding browses on growth and meat quality of Korean native goats were investigated. Twenty eight heads of male goats were divided into four treatment groups fed diets containing oak browse, pine browse, fermented pine browse, and rice straw. Growth rate, feed intake, carcass and meat quality and blood and serum criteria were investigated. The highest average daily gain of goats was 45.3g from oak browse, and goats on pine browse gained similar to those on fermented pine browse. Daily forage intake was 197g DM for oak browse and 74g DM for fermented pine browse. Feed efficiency(g feed/g gain) of oak browse was 11.0g and that of pine browse was 15.1g. From the results of serological inspection, metabolism in body was normal with all the browses tested. Dressing percentage was 45.1~46.2% and meat percentage was 55.2~55.9% without significant differences between diets. Fat percentage of goat carcasses fed rice straw was higher than those fed pine browse or fermented pine browse which was, however, not significantly different from those on oak browse. Shear force and coking loss of goat meat on pine browse or fermented pine browse was less than those on rice straw(p〈0.05) without significant differences between other browses. Juiciness, tenderness, and flavor of the goat meat were the better(p<0.05) from the pine browse diet than from rice straw.