论文部分内容阅读
以瓯江彩鲤5个配套选育系完全双列杂交产生的25个组合的子一代为研究对象,利用数理统计方法对“全红”、“大花”、“麻花”、“粉玉”和“粉花”5种体色瓯江彩鲤的生长性状(体重、全长、体长、体高和体宽)进行了连续16个月的动态观察与分析。结果表明,5种体色瓯江彩鲤生长动态基本一致,呈现出“S”型生长特点,6-10月份生长极为迅速,其绝对生长率和特定生长率最高;“大花”和“粉花”两种体色瓯江彩鲤从一龄阶段起就表现出生长优势,其生长显著快于其他3种体色(P<0.05),“粉玉”体色生长速度最慢;5种体色瓯江彩鲤不同月份的体重变异系数均较大(C.V=8%～35%);各生长月份体重对试验末体重呈显著直线相关,其决定系数随生长而逐渐增大(r2=0.000 2～0.993 6,P<0.01);在二龄阶段的7月份前,各体色瓯江彩鲤在不同月份的肥满度为3.2～3.5,在7月份之后,肥满度系数逐渐增高到3.7左右,“全红”体色瓯江彩鲤的肥满度各月份均最高,而“粉花”和“粉玉”两种体色的肥满度各月份均较低。本研究结果为不同体色瓯江彩鲤进一步优化选育提供了理论依据。
A total of 25 subgenues of 25 combinations generated by complete diallel cross breeding of 5 complementary breeding lines of Oujiang color common carp were used as research objects. The “red”, “big flower”, “twist” The growth traits (body weight, full length, body length, body height and body width) of the 5 color body Oujiang Cai carps were observed and analyzed continuously for 16 months in “Fengyu” and “Fenhua” The results showed that the growth dynamics of the five color Oujiang color common carps were basically the same, showing “S” shape growth characteristics. The growth rate was extremely high from June to October with the highest absolute growth rate and specific growth rate; The two color body Oujiang color carp from the first instar stage showed growth advantages, its growth was significantly faster than the other three kinds of body color (P <0.05), “pink jade ” body color growth rate (CV = 8% -35%). Body weight of each month of the Oujiang River had a significant linear correlation with body weight at the end of each month, and its coefficient of determination gradually increased with growth r2 = 0.0002 ~ 0.993 6, P <0.01). Before July of the second age stage, the plumpness of each body color Oujiang color common carp was 3.2 ~ 3.5 in different months. After July, the plumpness coefficient increased gradually To 3.7 or so, “all red ” body color Oujiang color carp fullness of each month are the highest, and “pink flower ” and “pink jade ” two kinds of body color fatness is lower in each month . The results of this study provide a theoretical basis for further optimization and breeding of different body color Oujiang color common carp.