DIGESTIBILITY DETERMINATION IN FISH USING CHROMIC OXIDE MARKING AND ANALYSIS OF CONTENTS FROM DIFFERENT SEGMENTS OF GASTROINTESTINAL-TRACT
DIGESTIBILITY DETERMINATION IN FISH USING CHROMIC OXIDE MARKING AND ANALYSIS OF CONTENTS FROM DIFFERENT SEGMENTS OF GASTROINTESTINAL-TRACT
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DOI：
10.1016/0044-8486(78)90008-x
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发表时间：
1978-01-01
期刊：
影响因子：
4.5
通讯作者：
AUSTRENG, E
中科院分区：
文献类型：
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作者：
AUSTRENG, E
综述了鱼类饲料消化率的测定方法。使用氧化铬的指示剂方法被认为是最合适的，但粪便取样的最佳方法尚不确定。虹鳟鱼（萨尔莫gairdneri，理查森）喂养的实验饮食含有1%的氧化铬。用2种剥离法收集粪便，从消化道的5个区域解剖获得肠内容物。对饲料、粪便和肠内容物进行了分析，并计算了蛋白质、脂肪、碳水化合物、灰分和总能的消化率。吸收发生在消化道的所有部分，重要的是将消化率研究中用于分析的粪便剥离限制在直肠的最后部分，即，从腹鳍到肛门
Methods of feed digestibility determination in fish were reviewed. The indicator method, using chromic oxide, was judged most suitable but the best method of sampling feces was uncertain. Rainbow trout (Salmo gairdneri, Richardson) were fed an experimental diet containing 1% chromic oxide. Feces were collected by 2 stripping methods, and gut contents were obtained by dissection from 5 zones of the alimentary canal. Analyses of feed, feces and gut contents were made, and digestibility of protein, fat, carbohydrate, ash and gross energy calculated. Absorption occurs in all parts of the alimentary tract, and it is important to limit the stripping of feces for analysis in digestibility studies to the hindmost part of rectum, i.e., from the ventral fin to anus.