Studies on Evaluation Methods for Dietary Energy in Fish

鱼类膳食能量评价方法的研究

• 批准号: 61480071
• 负责人: WATANABE Takeshi
• 金额: $ 3.2万
• 依托单位: Tokyo University of Fisheries
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61480071/
• 关键词: Feed; Digestible eneryg; Metabolizable energy; Not productive energy; Carp; Rainbow trout; エネルギー; ニジマス,コイ,ティラピア,アユ

The purpose of this study is to develop the most suitable method for evaluation of dietary energy in fish. Among various indications of energy value of diest, digestible energy values seem to be suitable as a first spproximation of the relative fule values of different feed ingredients and dists. Thus in the first experiment a simple and eay feces collector has been deviced for measurement of digestibility of dietary energy, and availability of digestible energy for evaluation of dietary fuels was investigated. Digestible energy values of practical feedstuffs such as fish meal, soybean meal, wheat flour, etc. were determined with carp, rainbow trout, Ayu and Tilapia under various conditions in terms of fish size and water temperature The digestibility of dietary energy was not so much influenced by fish size, but by water temperature. The digestible energy values of practical diets calculated based on the digestible energy values of their ingredients were also found to agree well with those determined directly by the indirect method using chromium oxide as an indicator. Thus when digestible energy values of various feedstuffs anr once determinedd by the indirect method, digestible energy values of practical fish feeds can be easily calculated or setimated by feed formulations.Feeding study was also conducted to determine another method suitable for energy evaluation of fish feeds using purified and practical-type dists having varying amino acid balance. In both feeding trials, the performances of fingerling carp were highly correlated to the dietary amino acid balance which aws experssed in term of the essential amino acid index. Based on these correlation coefficients obtained, order of the suitability for energy value were considered to be as follows; not energy for production metabolizable energy digestible energy tross energy. Also, simple methods ot estimate net energy and metabolizable energy were established.

这项研究的目的是开发一种评估鱼类饮食能量的最合适方法。在二分光的各种能量值的指示中，可消化的能量值似乎适合作为不同进料成分和区域的相对卵子值的第一个spproximation。因此，在第一个实验中，研究了一个简单而熟的粪便收集器，用于测量饮食能量的消化率，并研究了可消化能量以评估饮食燃料。在各种条件下，在鱼类的大小和水温方面，用鲤鱼，虹鳟，Ayu和罗非鱼确定了实际饲料，例如鱼粉，大豆粉，小麦面粉等的可消化能量价值。饮食能量的消化率并不那么受鱼类温度影响，而是受水温的影响。还发现，基于其成分的可消化能量值计算的实用饮食的可消化能值也与使用氧化铬作为指标直接通过间接方法确定的能量值很吻合。因此，当曾经通过间接方法确定的各种饲料ANR的可读能量值时，可以轻松地通过饲料配方来计算或设定实用鱼类饲料的可消化能值。喂养研究还进行了用于确定适合使用具有纯化和实用性型氨基酸平衡的纯化和实用性范围的鱼类饲料的能量评估的方法。在这两项喂养试验中，指形鲤鱼的表现都与饮食中的氨基酸平衡高度相关，该氨基酸平衡在必需氨基酸指数方面进行了AWS的体验。基于获得的这些相关系数，对能量值的适用性顺序被认为如下。不是生产能源可消化能量巨块能量的能源。此外，还建立了简单的方法估计净能量和可代谢能。