A series of trials at Aller Aqua have shown significantly higher growth, lower FCR and improved nutrient retention in fry of rainbow trout when fed a more energy-rich feed.
Consequently, Denmark-based Aller Aqua has relaunched its ALLER FUTURA EX GR with a higher fat and energy content, fully dedicated to the nutritional requirements of rainbow trout and other salmonids, said Dr Robert Tillner, product manager at the company.
At the same time, ALLER THALASSA EX GR is an extension into fry feed of the existing THALASSA range. With a balanced protein to fat ratio, it is more suited to larvae and fry of marine species as well as species with lesser energy requirements.
Starter diet
For the most delicate early stages Aller Aqua will this month launch its new premium starter diet for fish larvae and early fry, ALLER INFA EX GR, assembling only premium ingredients, including high levels of krill meal, and the highest standards in production technology.
With particle sizes down to 0,1 mm, ALLER INFA EX GR acknowledges the immature and delicate stages of fish larvae and early fry to support healthy development, fast growth and high survival rates.
Tillner explained the larvae of many fish species are not fully developed at the time they start feeding, some lack a fully developed stomach with the complete range in digestive enzymes, and the digestion of feed particles as well as the nutrient uptake is of highest importance to match the high potential for growth.
To aid the developing fish in their digestive processes and organ development, ALLER FUTURA EX GR, ALLER THALASSA EX GR and ALLER INFA EX GR are naturally enhanced to support organ development and health of the liver and the gallbladder, said Tillner.
This leads to an enhanced secretion of digestive enzymes, improved nutrient uptake as well as improved growth and health of larvae and fry.
