Fish Farmer

Through the wind and the rain

Optimising fish performanc­e in severe conditions

- By gIJS RUTJES, aLLTEch cOPPENS.

Over the last few years, temperatur­e swings and long drought periods were followed by brief periods of heavy rain. When subjected to these rapid changes in farming conditions, fish suffer severe stress. Facing challengin­g conditions, like low water supply or water temperatur­es rising to unfavourab­le heights, can be difficult times for the fish and the farmer. Protein utilisatio­n gives warmth, and that is what you want to decrease during these times. Keeping the stocks healthy and in good condition during these challenges accelerate­s the need for enhanced nutritiona­l strategies that optimise the natural defence mechanisms of the fish. This is critically important, right from the beginning, as it helps to produce robust juvenile and adult fish with optimal flesh quality characteri­stics.

Aquate® is the second generation of sustainabl­e product solutions and is incorporat­ed in all Alltech Coppens feed. The solutions under this umbrella are based on proprietar­y yeast and organic mineral components.

Healthy and robust fish are more likely to perform to their maximum potential, and gut health plays a major role in this. Bio-Mos® supports the fish’s defence and strengthen­s mucus barriers on skin, gills and gut. It also binds and removes many opportunis­tic bacteria and optimises the gut function.

Bio-Mos increases microvilli density and microvilli length in the gut, which means that the digestive function is optimised. Next to that, Bio-Mos results in a thicker mucus layer, which effectivel­y acts as an exterior protection barrier. The gut contains a large proportion of an animal’s immune system, and is where nutrients are absorbed and the gut microflora live. Gut health is essential in keeping fish healthy! Maintainin­g a good gut health is part of the functional­ities of the entire Aquate premix. It focuses on maximising growth and feed efficiency while supporting animal performanc­e by promoting good gut structure and a healthy gut microflora, as well as supporting natural defences.

Primacy in research - innovation

In order to satisfy both the farmer’s expectatio­n of the highest quality feeds at the best prices and monitor raw material and formulatio­n quality, Alltech Coppens does its research in a state-of-theart research facility with multi-salinity recirculat­ion aquacultur­e systems (RAS) capable of handling cold, temperate and warm-water species.

These research facilities allow the company to rigorously test their range of ingredient­s and feeds developed specifical­ly for unfavourab­le circumstan­ces on farms, all to assure fish health and productivi­ty. Research produces tangible results that perfectly translate from the research centre to the farms operated by customers. The implementa­tion of revolution­ary feeding programs has enabled fish farmers to optimise fish health and performanc­e while facing lower amounts of water and high temperatur­es.

For trout, Alltech Coppens has developed an extra option, a special feed with boosted nutritiona­l health support. This innovation is based on scientific data, field tests and practical experience over several years. This special feed, called COFit®, provides extra health support, especially during stressful periods. COFit contains a significan­t higher level of Aquate and Vitamins for maximal health support. The other characteri­stics of the COFit feed, like its adapted DP/DE, subsequent­ly preserve optimal protein utilisatio­n for the best performanc­e on-farm while decreasing heat production.

This last aspect is quite important, as it helps the fish to stay more comfortabl­e under warm conditions when feeding is still possible. Under warm conditions, oxygen radicals are more easily formed, resulting in oxidative stress. During oxidative stress, cell structures can be damaged, compromisi­ng the fish’s health, especially when such a period lasts. The normal oxidative capacity of the fish is generally not enough to cope with such a situation. It is, therefore, essential to provide extra oxidative capacity to the fish (i.e., by supplying extra selenium and vitamin C, as these have radical quenching properties).

Other important aspects of COFit are its increased EPA + DHA level and the inclusion of a prebiotic, both further supporting health and robustness of the fish. EPA and DHA are well known essential fatty acids that are required for many body functions, like immune defence and heart and brain developmen­t. The prebiotic further aids in creating and maintainin­g a beneficial gut flora and works in synergy with Bio-Mos.

COFit is a well-balanced, health-supporting trout feed that is nutritiona­lly adapted for stressful situations like exceptiona­lly long periods of drought, resulting in water shortage; brief periods of heavy rain (spring through to autumn); extreme water temperatur­es and fluctuatin­g oxygen levels.

COFit is the ultimate nutritiona­l solution to optimise the performanc­e of trout when facing challengin­g conditions.

Healthy and robust fish are more likely to perform to their maximum potential”

 ??  ?? Below: Challengin­g conditions for trout farming during hot summer days
Below: Challengin­g conditions for trout farming during hot summer days
 ??  ?? Left: Alltech Coppens onfarm support, checking the incoming water supply in a drought
Left: Alltech Coppens onfarm support, checking the incoming water supply in a drought

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