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| 南方鲇的排粪量及消化率同日粮水平、体重和温度的关系 | |
| 引用本文： | 谢小军,孙儒泳.南方鲇的排粪量及消化率同日粮水平、体重和温度的关系[J].海洋与湖沼,1993,24(6):627-633. |
| 作者姓名： | 谢小军 孙儒泳 |
| 作者单位： | 西南师范大学生物系，北京师范大学生物系 重庆 630715，100875 |
| 基金项目： | 国家教委博士点专项基金资助,32870499号 |
| 摘 要： | 于１９８８年２月－１９８９年２月测定了南方鲇幼鱼的排粪量，从而估算共消化率。结果表明，当水温为２５℃时，在日粮水平分别是体重的１％，２％，４％和达饱食的条件下，平均消化率分别为摄入食物能量的８０．３２％，８４．９４％，８８．４０％ｔ ８７．２７％；在平均初始体重分别为８．７２，２５．４３，４５．１６，７８．１８和１２７．５ｇ的实验组中，平均消化率分别为８６．５９％，８１．１５％，９０．３８％，８６ |
| 关 键 词： | 鱼类能量学 消化 排粪量 南方鲇 鲶 |
| 收稿时间： | 1992/5/23 0:00:00 |
| 修稿时间： | 1993/5/24 0:00:00 |
THE FAECAL PRODUCTION AND DIGESTIBILITY OF THE SOUTHERN CATFISH (SILURUS MERIDIONALIS CHEN), IN RELATION TO RATION LEVEL, BODY WEIGHT AND TEMPERATURE |
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| Xie Xiaojun and Sun Ruyong.THE FAECAL PRODUCTION AND DIGESTIBILITY OF THE SOUTHERN CATFISH (SILURUS MERIDIONALIS CHEN), IN RELATION TO RATION LEVEL, BODY WEIGHT AND TEMPERATURE[J].Oceanologia Et Limnologia Sinica,1993,24(6):627-633. | |
| Authors: | Xie Xiaojun and Sun Ruyong |
| Institution: | Department of Biology, Southwest China Teachers University, Chongqing 630715;Department of Biology, Beijing Normal University 100875 |
| Abstract: | The digestibilities of the yearlings were estimated by measuring their faecal productions of the southern catfish (Silurus meridionalis Chen) in laboratory from February, 1988 to February, 1989. The results showed that at 25°C the mean values of the digestibilities as percentages of food energy in the fish fed ration levels of l%, 2%, 4% body weight per day and to satiation were 80.3%, 84.9%, 88.4% and 87.3%, respectively; and that in the fish with mean initial weights of 8.72, 25.43, 45.16, 78.18 and 127.5 g, the mean values were 86.6%, 81.1%, 90.4%, 86.9% and 81.1%, respectively.. The mean digestibilities in the fish with similar initial weight (43.84 - 47.19 g) at 15, 20, 25, and 30°C were 78.1%, 82.0%, 85.2% and 90.0%, respectively. By regression analysis a model for prediction of the faecal production (F:J/day) with the food consumption (C:J/day), body weight (W:g) and temperature (T:°C) as independent variables was developed as following: F=0.868C(0.981+0.0346lnW-0.100lnT) The discussion suggested that the positive effect of temperature on the efficiency in transforming food energy into net energy might occur on the basis of the relationship between the digestibility and temperature. |
| Keywords: | Fish energetics Digestibility Faecal production Ecological factors Silurus meridionalis |
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