CAJ | 학술논문

运用统计分析方法研究了吉富品系和埃及品系尼罗罗非鱼(Oreochromis niloticus)2龄成鱼雌、雄个体的出肉率和可量性状之间的相关性.结果显示,尼罗罗非鱼的平均出肉率为38.68%,雄性个体出肉率比雌性个体略高,吉富品系出肉率比埃及品系略高.尼罗罗非鱼出肉率与可量性状间存在较强的线性关系,拟合方程相关系数为0.985.在有显著意义的可量性状相关系数中(P<0.01),与肉片质量和出肉率的相关性均最高的可量性状为体质量,相关系数分别为0.964和0.575;其次为体高、体长和体厚.而头长与肉片质量、出肉率均呈负相关关系.雄性个体的相天系数均高于雌性个体,在雄性个体中,出肉率与体质量的相关系数为0.630,与体高的相关系数为0.617,均为中等程度相关.对可量性状之间的比值与出肉率进行相关性分析,相关系数普遍比单个性状高,特别在雄性个体中表现明显.其中相关系数较高的比例组合有身长/头长比值(0.765)、体长/头长比值(0.732)、身长/体厚比值(0.703),均达到较强程度的相关,比单个性状的相关性有明显提高.结果表明,利用可量性状预测罗非鱼的出肉率是可行的.
운용통계분석방법연구료길부품계화애급품계니라라비어(Oreochromis niloticus)2령성어자、웅개체적출육솔화가량성상지간적상관성.결과현시,니라라비어적평균출육솔위38.68%,웅성개체출육솔비자성개체략고,길부품계출육솔비애급품계략고.니라라비어출육솔여가량성상간존재교강적선성관계,의합방정상관계수위0.985.재유현저의의적가량성상상관계수중(P<0.01),여육편질량화출육솔적상관성균최고적가량성상위체질량,상관계수분별위0.964화0.575;기차위체고、체장화체후.이두장여육편질량、출육솔균정부상관관계.웅성개체적상천계수균고우자성개체,재웅성개체중,출육솔여체질량적상관계수위0.630,여체고적상관계수위0.617,균위중등정도상관.대가량성상지간적비치여출육솔진행상관성분석,상관계수보편비단개성상고,특별재웅성개체중표현명현.기중상관계수교고적비례조합유신장/두장비치(0.765)、체장/두장비치(0.732)、신장/체후비치(0.703),균체도교강정도적상관,비단개성상적상관성유명현제고.결과표명,이용가량성상예측라비어적출육솔시가행적.
The correlation between body measurements and fillet yield of 2-year female and male individuals in GIFT strain and Egypt strain Nile tilapia (Oreochromis nilotictts) was studied by statistics analysis. The average fillet yield in Nile tilapia was 38.68%, and the fillet yield value of males was slightly higher than that of female; the fillet yield value of GIFT strain was slightly higher than that of Egypt strain. The results showed there was a strong linear relationship between body measurements and fillet yield (R=0.985). Body weight had the highest value of correlation coefficient to fillet weight (0.984) and fillet yield (0.575), respectively, followed by body depth, standard length and body width. While there were negative correlations between head length and both fillet weight and fillet yield. The correlation coefficient of male was higher than that of female, which was 0.630 between body weight and fillet yield and 0.617 between body depth and fillet yield indicating a medium correlation. Correlation between fillet yield and ratio of two body measurements was higher than the individual variables, especially in male fishes. The following ratios of two body measurements showed stronger correlations with fillet yield than the individual variables, corrected length/head length (0.765), standard length/head length (0.732), corrected length/body depth (0.703) and body weight/standard length. It was concluded that it is possible to predicting fillet yield based on body measurements in Nile tilapia.