网箱养殖美国红鱼能量收支的研究.docVIP

PAGE PAGE 1 水箱采用橙黄色高密度聚乙烯水产养殖专用箱，规格为80㎝×60㎝×60㎝。水桶、塑料瓢、水塔等。 增氧泵、电子天平、比重计、pH精密试纸、烧杯、玻璃瓶、玻璃棒。 ...网络收集，有问题请跟我联系！！ 网箱养殖美国红鱼Sciaenops ocellatus 能量收支的初步研究 黄贤烁 浙江海洋学院 海洋科学与技术学院，浙江 舟山 316004 [摘要] 本次试验是在水温为18℃，摄食水平分别为体重的0%、1%、3%、4%和饱食的条件下对美国红鱼的各项能量收支进行测定的，结果表明：（1）美国红鱼能量和干物质的吸收效率随着摄食水平的增加而增加，平均为98.3%和 77.6%；（2）美国红鱼排粪能占摄食能的比例为3.6%~32.1%，随着摄食水平的增加而增加；（3）美国红鱼代谢能占摄食能的比例为14.8%~47.7%，随着摄食水平的增加而减少；（4）美国红鱼排泄能占摄食能的比例为10.4%~48.1%，随着摄食水平的增加而减少；（5）美国红鱼生长能占摄食能的比例为31.8%~35.7%，随着摄食水平的增加而减少。在各摄食水平条件下，平均生长能是最大的，其次是代谢能，然后是排泄能。美国红鱼在无人惊动下比较活跃，所以代谢能占很大的比例，但是由于鱼在运输过程中受伤较大，所以在刚开始几天测的代谢并不能准确地代表以后的几天。用此可以来确定养殖容量、规范养殖管理、提高鱼苗成活率、推行生态养殖。 [关键词] 网箱养殖；美国红鱼；摄食水平；能量收支 The preliminary analysis of Sciaenops ocellatus in cage culture Huang Xianshuo (Marine Science and Technology College of Zhejiang Ocean [Abstract] Undertaken at the water temperature 18℃ and feeding ration was 0% 、1%、3%、4% of the body weight regularly, the experiment had measured various energy budget of which were fully fed. It was to determine the breeding capacity 、norm the breeding administration、lifting the fish seedling survival rate and implementing ecological breeding. Results show that ：（1）the absorptive efficiencies for energy and dry weight of Sciaenops ocellatus increased with feeding levels, averaged 98.3% and 77.6% respectively；（2）faecal production was 3.6%~32.1% of feeding, increasing with feeding ration increasing；（3）metabolism was 14.8%~47.7% of feeding, decreasing with feeding ration increasing ；（4）excretion was 10.4%~48.1% of feeding ，decreasing with feeding ration increasing；（5）growth was 31.8%~35.7% of feeding, decreasing with feeding ration increasing. Under different feeding levels, the largest was the mean growth, secondly is the metabolism, then is the excretion. Sciaenops ocellatus were very active when they were not meddled, so metabolism seized a very great proportion; the fish were wounded in the transportation, so the metabolism measured in the first days did not represent the following days. [Key words] Cage cu