SEP 2020 | International Aquafeed magazine

Page 20

ESSENTIAL OILS Interest of essential oils and their aromatic compounds in the development of sustainable aquaculture

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by Jean Peignon, Aquaculture Nutritionist, Aquaneo, Techna France Nutrition ssential oils and their aromatic compounds are proven solutions to strengthen fish health; however, they remain a group of diverse molecules and a complex topic which requires knowledge and expertise. Using the correct blend to tackle challenges specific to aquaculture, Aquaviance is a dedicated solution to aquatic animals. Thanks to its mode of action, based on a strengthen gut microbiota Aquaviance sustains the growth and feed efficiency in challenging conditions. Aquaviance efficacy was proven on different species and is used all around the world, contributing to a more sustainable aquaculture.

One of the many advantages of essential oils is their multiple bacteriostatic and bactericidal effects, depending on the quantity and quality of the aromatic compounds present in it. The array of action is vast and includes the alteration of membrane lipid layer, inhibition of cell division, inhibition of ATP synthesis enzymes, inhibition of quorum sensing, biofilm formation etc. (Mittal et al. 2018). These multiple actions prevent the risk of resistance by the bacteria, which represent a major concern regarding the use of antibiotics. Beside the bacteriostatic and bactericidal effects, essential oils also exert positive effects on gut bacterial communities and digestive functions, as well as anti-oxidative effects (Sutili et al. 2017).

Techna: Years of expertise in precision nutrition

In the late 90’s, Techna, a French company experienced in animal nutrition, saw the interest of essential oils and their aromatic compounds to improve gastrointestinal health and Origin and effects of essential oils and their aromatic nutrient absorption. More than 20 years of expertise and trials compounds allowed Techna to design a new range of product based on Essential oils are well-recognised solutions to support the essential oils and their aromatic compounds (Aviance for poultry, health of fish and reduce the deleterious effects of pathogenic Reganol for pigs ...). These solutions were made to answer bacteria. Recent publications (Sutili et al. 2017, Reverter et al. specific problems such as productivity improvement without 2014, Mittal et al. 2018, Zeng et al 2015) reviewed the multiple antibiotic growth promoters, fighting weaning stress, digestive benefits of essential oils and their potential to provide sustainable disorders and anorexia. These products are used every day by alternatives to chemical treatments and antibiotics. feedmills and farmers all around the world. Essential oils is a generic term that refers to mixtures of various The aquaculture industry suffers a heavy toll due volatile aromatic compounds, mainly terpenes and to bacterial diseases. Conscious of that, Aquanéo, terpene derivatives, which are synthetised by plants the aquaculture brand of Techna, developed a and concentrated in hydrophobic liquids (Zeng et al dedicated solution, using the group knowledge of 2015). Typically, essential oils are characterised by essential oils and their aromatic compounds, to two or three aromatic compounds in relatively high both guarantee gut health for improved nutrient concentration (Sutili et al. 2017): Thyme’s (Thymus absorption and reduced gut stress. Subclinical vulgaris) essential oil’s main aromatic compound infections can lead to decreased performances, is thymol (20 – 50%), while clove’s (Syzygium and aquatic environments are prone to variations. aromaticum) essential oil is mainly composed of Aquanéo’s product, Aquaviance, uses the benefits eugenol (70 – 90%) etc. Their efficacy to reduce Image 1: Jean Peignon, of essential oils and their compounds on the bacteria’s development is not a coincidence, as Aquaculture Nutritionist, microbiota to promote a favourable population, they are an active part of plants defences against Aquaneo, Techna France Nutrition guarantee better resilience of the fish in stressful microbial threats. 20 | September 2020 - International Aquafeed


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