I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker.
Does anyone know of a type of marker that can be used like this in Nile tilapia?
Dear Kelsy,
you can go through this article Article Addition of yttrium oxide as digestibility marker by vacuum ...
.Hope this helps.
Thank you.
Prasanta
Dear colleague
if the issue is to made the pellets you can use CMC, mix in wet with all feedstuffs and a domestic mincer as a pelleter, with an appropiate sieve size, then dry it and the pellets are ready. you probably need to do corrections for CMC digestibility.
Regards,
Redimio
Digestibility is measured directly from differences between the feed intake (I) and fecal output (O). Total collection of feces in water is not possible for fish, so an inert indicator (e.g., chromium, yttrium) is added to the diet that accumulates in the feces. https://www.sciencedirect.com/topics/food-science/digestibility
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