CAJ | 학술논문

利用2012年培育的白斑狗鱼（ Esox lucius）鱼种当年10月15日至翌年4月20日间体重的测定数据，对白斑狗鱼冬季生长速度进行了分析。结果显示，试验期间白斑狗鱼平均增重（235．20±97．52） g，绝对增重率为1．26 g／d，瞬时增重率0．22％／d，证明白斑狗鱼鱼种与主要养殖鱼类鱼种相比具有明显的冬季生长优势。利用新疆水产科学研究所濒危水生野生动物救护中心对2012年繁育的白斑狗鱼快速生长系F1代4个性状（体重、体长、体高及体厚）的测定数据，对生长性能进行了评价，并初步估算了现实遗传力。结果显示：经130 d的养殖，选育系的绝对增重率和瞬时增重率均高于对照系，选育系生长速度比对照系提高了10．54％，且选育系还有很大的遗传改良潜力；体重、体长、体高及体厚4个性状早期的现实遗传力在0．16～0．18间，显示遗传力较低，因此利用家系选育对白斑狗鱼进行遗传改良可能取得良好效果。
이용2012년배육적백반구어（ Esox lucius）어충당년10월15일지익년4월20일간체중적측정수거，대백반구어동계생장속도진행료분석。결과현시，시험기간백반구어평균증중（235．20±97．52） g，절대증중솔위1．26 g／d，순시증중솔0．22％／d，증명백반구어어충여주요양식어류어충상비구유명현적동계생장우세。이용신강수산과학연구소빈위수생야생동물구호중심대2012년번육적백반구어쾌속생장계F1대4개성상（체중、체장、체고급체후）적측정수거，대생장성능진행료평개，병초보고산료현실유전력。결과현시：경130 d적양식，선육계적절대증중솔화순시증중솔균고우대조계，선육계생장속도비대조계제고료10．54％，차선육계환유흔대적유전개량잠력；체중、체장、체고급체후4개성상조기적현실유전력재0．16～0．18간，현시유전력교저，인차이용가계선육대백반구어진행유전개량가능취득량호효과。
To examine the winter growth rate of Esox lucius hatching in the same year , the body weight data from October 15 to April 20 were measured and analyzed.The results showed that the average weight gain was (235.20 ±97.52 ) g, the absolute growth rate was 1.26 g/d, and the instantaneous growth rate was 0.22% during the test , indicating that the E.lucius had an obvious growth advantages than other cultured fishes in winter .Four characters including body weight , body length, body height and body width were mearsured in rapid growth strain (F1) of nothern pike, the growth perform-ance was evaluated and realized heritability was estimated .The results showed that both absolute growth rate and instantane-ous growth rate of selection strain were higher than those of contrast strain , the growth rate improved 10.54%.The coeffi-cient variation of weight was larger in selection strain , suggesting that there was still high genetic variation , the genetic im-provement potentail was good in selection strain .The realized heritability of four characters varied from 0.16 to 0.18 , show-ing a low heritability.Therefore, pedigree breeding for genetic improvement in northern pike could achieve good results .