Abstract

본 연구는 제주지역에서 많이 생산되는 농산부산물인 건조감귤박을 활용하여 말 사료로서의 이용성을 구명하고 사육이 완료된 말을 도축하여 육질 특성을 구명하기 위해 실시되었다. 급여한 농산부산물은 소맥피만 급여한 처리구와 건조팰렛감귤박(20%)에 소맥피(80%)를 혼합한 처리구로 구분하여 수행하였으며 농산부산물 급여는 1일 2회 체중의 1.5%를 기준으로 급여시켰고 물과 건초는 자유 급식시켰다. 일당증체량의 변화는 소맥피급여구와 소맥피+건조감귤박처리구에서 유사한 경향을 나타내었고 사료요구율은 소맥피+건조감귤박처리구가 소맥피 단독 처리구보다 더 낮은 값을 나타내었다. 말고기의 도체율은 소맥피+건조감귤박처리구가 소맥피처리구 보다 더 낮은 값을 나타내었다. 그러나 육량등급은 소맥피+건조감귤박처리구가 더 우수하게 나타났다. 육색에서 명도(<TEX>$L^*$</TEX>)은 소맥피처리구보다 소맥피+건조감귤박처리구에서 더 밝은 값을 나타내었으나 황색도(<TEX>$b^*$</TEX>)는 오히려 더 낮은 값을 나타내었다. 말고기의 물리적 변화에서 전단력은 소맥피처리구보다 소맥피+건조감귤박처리구가 더 낮은 값을 나타내면서 보수력과 가열감량도 함께 증가하였다. 일반성분에서 지방은 소맥피처리구보다 소맥피+건조감귤박처리구가 더 낮은 값을 나타내었고 다른 성분은 비슷하였다. 무기물은 소맥피+건조감귤박처리구가 Ca, K, Mg, Cu, Mn이 소맥피처리구 보다 더 많은 것으로 나타났으나 유의적인 차이는 없었다(p>0.05). 아미노산에서는 소맥피+건조감귤박처리구가 methionine, glutamic acid, glycine이 소맥피처리구보다 약간씩 증가하였다. 지방산은 소맥피+건조감귤박처리구가 stearic acid, oleic acid, eicosenoic acid, arachidonic acid 함량이 증가하는 경향을 나타내었다. 결과적으로 농산부산물로써 소맥피의 일부를 건조감귤박으로 대치하여도 비육 사료로 손색이 없는 것으로 사료된다. This study was conducted to elucidate the characteristics of equine meat traits and to evaluate the utilization of dried-citrus pulp abundantly produced in Jeju Island as feed ingredient in the diet of finished meat horses. Treatment groups consisted of wheat bran (A) and the dried-pellet mixture of citrus pulp (20%) and wheat bran (80%) (B). Feeding of agricultural by-products were 2 times in a day at the level of 1.5% of body weights. Water and dried-grass forage was not restricted. The average daily gain was similar in both groups. Feed conversion of treatment B showed lower level than that of A. Carcass rate of B was relatively lower than that of A, but meat yield grade of B was higher than that of A. For meat color traits, <TEX>$L^*$</TEX> of B was lighter than that of A, and <TEX>$b^*$</TEX> of group B was lower than that of group A. From the analysis of physical characteristics of equine meats, shearing force had decreased in the treatment B but the levels of drip loss and water holding cavity had increased in the treatment B compared to A. The level of crude fat is lower in the treatment B than the treatment A. For the mineral contents, the treatment B showed higher levels of Ca, K, Mg, Cu and Mn than that of A. For the fatty acid contents, the treatment B showed increased levels of stearic acid, oleic acid, eicosenoic acid, and arachidonic acid compared to A. Consequently, these results suggested that dried-citrus pulp might be utilized as replacement material for equine forage. Please rewrite the whole abstract and should include all required information. Before resubmission, please check it again from a native colleague in your group.

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