Daftar Isi: METHODS USED IN DIGESTIBILITY EVALUATION OF FISH DIETS: A REVIEW AND CHALLENGES

Daftar Isi:

This paper is an attempt at taking a critical look at work done on digestibility studies in fish nutrition research. It also made an assessment of the various inert markers used in digestibility studies both external and internal (indigenous). It observed that although chromic oxide is the most widely used external marker prospect exist for the use of indigenous markers like crude fibre and acid insoluble ash, that are part of the diet or nutrient in the feed. It also looked at the components of these inert markers. Furthermore, the methods used in faecal collection were x-rayed and this includes faecal collection from the rearing tank, from the lower part of the large intestine and from metabolism chambers. The demerits in each of these methods were highlighted. Finally, the inherent challenges in the course of carrying out research work on digestibility were evaluated and suggestions and recommendations made on how to overcome some of these challenges.