꽃사슴에 있어서 사료의 단백질 수준이 녹용생산성과 품질에 미치는 영향
Effects of Dietary Protein Level on Production and Chemical Composition of Velvet Antler in Spotted Deer(Cervus nippon)
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본 연구는 꽃사슴에 있어서 사료내 단백질 수준이 녹용 생산성과 조성분 변화에 미치는 영향을 검토하여 녹용 생산성 향상을 위한 기초자료로 제시하고자 꽃사슴 18두를 3개의 처리구로 나누어 각각 사료내 단백질 수준을 10%(T1), 15%(T2) 및 20%(T3)로 하여 녹용 성장기에 사양실험을 실시했다. 건물섭취량 및 조단백질 섭취량 그리고 일당 증체량은 사료의 단백질 수준이 증가함에 따라 높아져 처리간 유의성(P<0.05)이 인정되었다. 생산된 녹용의 주간 길이 및 둘레의 경우도 사료의 단백질 수준이 높아질수록 증가하였으나 차이에 대한 유의성은 인정되지 않았다. 녹용 생산성은 역시 사료의 단백질 수준이 증가함에 따라 유의적으로 증가하여(P<0.05) T1구에서 가장 낮은 생산량을 나타냈고 T3에서 가장 높은 생산량을 기록했다. 녹용의 조단백질은 T1구에 비해 T3구에서 다소 낮았으며 조회분은 반대의 경향을 나타냈으나 유의적 차이는 인정되지 않았다. 결론적으로 녹용의 생산성을 증가시키기 위해서는 사료내 단백질 수준을 적정 수준으로 유지해 줄 필요가 있으나 녹용 품질에는 별 영향을 미치지 않는 것으로 판단된다.
Abstract
The aim of this study was to provide basic information to allow improved feeding management for velvet antler production by investigating the effects of dietary protein level on production and chemical composition of velvet antler in spotted deer(Cervus nippon). Eighteen male spotted deer of 5~6 years old were assigned to 3 unreplicated groups by production record of the previous year. Deer were fed on experimental diets at different protein level of 10%(T1), 15%(T2) and 20%(T3). Dry matter intake, crude protein intake and daily gain were increased with increasing the protein level in diets and there were significant differences(P<0.05) between groups. Although not significant, mean length of main beam tended to be longer in either left or right beam with increasing the protein level, and in girth at part of base of main beam, it was a similar pattern to the result of length. The velvet antler production was affected by dietary protein level and thus that was the smallest in T1 and the largest in T3(P<0.05). The content of crude protein in velvet antler was higher in T1 than in T3, whereas the content of crude ash in velvet antler was contrast to that of crude protein, however, there were no significant differences.
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