저수준의 Lysine 사료에서 L-leucine 첨가수준이 비육후기 Duroc 품종 돼지의 성장 및 육질특성에 미치는 영향
Effects of Dietary L-leucine Levels in Low-lysine Diets on Growth Performance and Meat Quality Parameters in Finishing Duroc Pigs
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본 연구에서는 비육후기 Duroc 품종 돼지를 대상으로 저수준의 lysine 사료에 합성 L-leucine 첨가수준이 생산성, 도체 및 육질 특성에 미치는 영향을 평가하였다. 시험동물은 평균 74±1kg의 Duroc 품종 54두를 각 처리 당 6반복, 반복 당 3두씩 공시하였다. 시험사료는 lysine 0.45%의 기초사료에 합성 L-leucine을 각각 0% (CON), 1.5% (LEU 1.5) 및 3.0% (LEU 3.0) 첨가한 후 30일간 급여하였다.일당증체량, 사료섭취량 및 사료요구율은 처리구간에 유의적인 차이를 보이지 않았다. 도체특성에 있어서는 도체율 및 등지방두께는 처리구 간 유의적인 차이를 보이지 않았으나, 등심단면적은 L-leucine의 첨가수준이 높아짐에 따라 증가하는 경향을 나타내었다. 근내지방도는 L-leucine 첨가구가 대조구에 비하여 유의적으로 높았다(P<0.05). 육질 특성에서 조지방 함량이 유의적인 차이는 없었지만 L-leucine 첨가에 따라 증가하는 경향을 나타내었으며, CIE L*는 유의적으로 증가하였다(P<0.05).
Abstract
author : H. K. Moon, Swine Research Division, National Livestock Research Institute, Cheonan 330-801, Korea,Phone: 041) 580-3454, e-mail: hkmoon@rda.go.kr
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