论文部分内容阅读
为了引进和推广克氏原螯虾养殖技术,于2007年9月、10月分别从湖北购入亲虾和幼虾在安康水产试验示范站进行水泥池、稻田和土池塘三种条件下养殖;于2008年5月每周或半周测量一次体长体重,分别进行体长体重关系、个体出现率、个体相对增重率和体重体长比值的分析。结果表明:1.稻田克氏原螯虾体长体重的关系为:雌虾,y=0.0184x3.1984,R2=0.9506,雄虾,y=0.0113x3.4626,R2=0.9611,且雌虾生长匀速,雄虾生长异速,符合体重体长形态参数y=a*Lb;2根据个体出现率可知,水泥池和稻田生长的群体主要集中7.71cm~9.71cm之间,土池塘生长的群体主要集中在8.21cm~10.71cm之间,土池塘生长速度相对较快;根据生长集中区间的个体相对增重率可知,5月份稻田个体增重率最高,为24.13%,土池塘最低;体重、体长比值随着体长的变化趋势表明,稻田虾呈线性变化,水泥池和土池塘虾变化呈“S”型,趋向线性变化。可以认为,克氏原螯虾可在安康地区正常生长,且本试验条件下5月份稻田中克氏原螯虾生长最快。
In order to introduce and popularize the culture technology of Procambarus clarkii, in September 2007 and October 2007 respectively, broodstock and juveniles were purchased from Hubei to breed under the conditions of cement ponds, paddy fields and earth ponds in Ankang Aquatic Experiment Station; May 2008 weekly or semi-weekly measurements of body weight, length and body weight were observed, the incidence of individuals, the relative weight gain rate and weight body length ratio analysis. The results showed as follows: 1. The relationship between body weight and body length of C. przewalskii was: female, y = 0.0184x3.1984, R2 = 0.9506, male, y = 0.0113x3.4626, R2 = 0.9611, , Male shrimp grows at an all-speed and accords with body weight and body length and shape parameters y = a * Lb; 2 According to the individual appearance rate, the growth of cement ponds and paddy fields mainly focus on 7.71cm ~ 9.71cm, From 8.21cm to 10.71cm, the growth rate of soil pond was relatively fast. According to the relative weight gain rate of individuals in the concentrated growth interval, the individual weight gain rate of paddy field in May was the highest, which was 24.13%, the lowest in soil pond, and the body weight, body length The ratio of body length showed that the shrimp showed a linear change in shrimp ponds, and the “Shui” type in the ponds and ponds showed a tendency of linear change. It can be considered that Procambarus clarkii can grow normally in the well-being area, and under the test conditions, the growth of Procambarus clarkii in the paddy field in May was the fastest.