Availability and effectiveness of free amino acids in aquaculture
Palabras clave:
amino acids, efficiency, availabilityResumen
While free amino acids are routinely used in feeds for terrestrial farm animals, it is – except for few aqua species – not commonly practiced in finfish and shrimp nutrition. Reasons for not using free amino acids are often related to doubts on the efficiency and availability of these ingredients. This paper discusses aspects on the availability and efficiency of supplemental amino acids in fish and shrimp nutrition and compiles recent studies but also references from literature providing evidence that free amino acid in aqua feed are available to the animals and thus effective. Moreover, question of the availability of supplemental amino acids compared to protein bound amino acids is addressed. Research presented provides evidence that supplemental amino acids are effective in aqua species including finfish and shrimp. This provides that these amino acids were available to the animals. Although research indicates a high efficiency of supplemental amino acids more research is needed in order to quantify the availability compared to amino acids from protein ingredients.Descargas
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