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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。
Based on the data of body weight of Esox lucius from October 15 to April 20 of the following year, the winter growth of Pisces was analyzed. The results showed that during the experiment, the average weight gain of Porphyda was 235.20 ± 97.52 g, the absolute weight gain was 1.26 g / d and the instantaneous weight gain was 0.22% / d. Compared with the obvious advantages of winter growth. Based on the data of four F1 traits (body weight, body length, body height and body thickness) of the rapid growth of the breeding of the white spot pike in 2012 by the Endangered Aquatic and Wildlife Rescue Center of Xinjiang Institute of Fisheries Sciences, the growth performance was evaluated. And preliminary estimates of the actual heritability. The results showed that after 130 days of breeding, the absolute weight gain rate and instantaneous weight gain rate of the breeding lines were higher than that of the control line, the growth rate of the breeding lines increased by 10.54% than that of the control line, and the breeding lines had a great Genetic improvement potential; Body weight, body length, body height and body thickness of 4 traits in the early real heritability of 0.16 to 0.18, showing less heritability, so the use of genetic breeding of the family can make good results.