Effects of marine protein‐, marine oil‐ and marine‐free diets on the growth performance and innate immune responses of Atlantic salmon (
            <i>Salmo salar</i>
            , L.) post‐smolts

Metochis, Christoforos; Crampton, V.O.; Ruohonen, Kari; El‐Mowafi, Adel; Bell, J. Gordon; Adams, Alexandra; Thompson, Kim D.

doi:10.1111/are.13087

Cited by 10 publications

(8 citation statements)

References 62 publications

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“…In this study, lysozyme activity increased over time in both diploid groups while it decreased slightly in the triploid groups. Although ploidy differences were significant at 21 dpi, the lysozyme activity recorded was found to be in the range previously reported for Atlantic salmon and other salmonids (Saurabh and Sahoo, 2008 ; Korkea-aho et al 2011 ; Dick, cited in Nowak et al 2014 ; Metochis et al 2017 ). In terms of the infected groups, this significant ploidy difference is in contrast to previous results in which no ploidy differences in serum lysozyme activity were observed (Powell et al .…”

Section: Discussionsupporting

confidence: 80%

A comparison of disease susceptibility and innate immune response between diploid and triploid Atlantic salmon (Salmo salar) siblings following experimental infection with Neoparamoeba perurans, causative agent of amoebic gill disease

et al. 2017

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SUMMARYFew studies have focussed on the health and immunity of triploid Atlantic salmon and therefore much is still unknown about their response to commercially significant pathogens. This is important if triploid stocks are to be considered for full-scale commercial production. This study aimed to investigate and compare the response of triploid and diploid Atlantic salmon to an experimental challenge with Neoparamoeba perurans, causative agent of amoebic gill disease (AGD). This disease is economically significant for the aquaculture industry. The results indicated that ploidy had no significant effect on gross gill score or gill filaments affected, while infection and time had significant effects. Ploidy, infection and time did not affect complement or anti-protease activities. Ploidy had a significant effect on lysozyme activity at 21 days post-infection (while infection and time did not), although activity was within the ranges previously recorded for salmonids. Stock did not significantly affect any of the parameters measured. Based on the study results, it can be suggested that ploidy does not affect the manifestation or severity of AGD pathology or the serum innate immune response. Additionally, the serum immune response of diploid and triploid Atlantic salmon may not be significantly affected by amoebic gill disease.

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Section: Discussionsupporting

confidence: 80%

A comparison of disease susceptibility and innate immune response between diploid and triploid Atlantic salmon (Salmo salar) siblings following experimental infection with Neoparamoeba perurans, causative agent of amoebic gill disease

et al. 2017

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“…Haematological and biochemical evaluation of blood is important in assessing fish health with respect to dietary manipulation TA B L E 6 Biochemical and haematological parameters of GIFT tilapia juveniles fed graded levels of L-arginine (Metochis et al, 2017). Dietary arginine supplementation plays central role in the modulation of immune responses (Vianna et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Dietary arginine requirement in diets of GIFT strain of Nile tilapia, Oreochromis niloticus : Effects on growth performance, whole‐body composition, growth‐related gene expression and haemato‐biochemical responses

Prabu

Felix

Uma

2021

Aquaculture Research

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Arginine is one of the essential amino acids for fish (NRC, 2011) with several physiologically functional roles (Li et al., 2009). Arginine is the most abundant nitrogen carrier for tissue proteins and used in several biosynthetic pathways, involving key regulatory enzymes, such as arginase, nitric oxide synthase and arginyl-tRNA synthetase. Furthermore, arginine serves as the precursor for the synthesis of protein, nitric oxide, urea, polyamines, proline, glutamate, creatine, ornithine and agmatine in terrestrial animals (Dai et al., 2012) and in fish (Pohlenz et al., 2014). It is required to improve the growth performance, enhance immunity and reduce environmental stress of fish species, such as Nile tilapia, Oreochromis niloticus (Yue et al., 2015), channel cat fish, Ictalurus punctatus (Pohlenz et al., 2014), juvenile blunt snout bream, Megalobrama amblycephala (Liang et al., 2016) and hybrid striped bass, Morone chrysops × Morone saxatilis (Cheng et al., 2012).

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“…aurata, and similar results have been reported for other fish species (Hernández et al., ; Steffens, ; Zhou et al., ), while it has also been claimed that the increased haematocrit in S . salar fed the diets with PBM implies an improved fish health status (Metochis et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Studies on the digestive enzyme activities in fish elucidate the digestion and absorption of dietary nutrients and thus the suitability of protein sources in the diet (Silva et al., ). Moreover, haematological and biochemical assessments of blood are important in evaluating fish health (Metochis et al., ). Furthermore, it is known that nutritional factors, such as the type of dietary protein and imbalances of dietary essential amino acids, can influence the regulation of the growth hormone ( gh ) and the insulin‐like growth factor ( igf ) system resulting in reduced feed intake, growth and nutrient retention in fish (Gómez‐Requeni et al., ).…”

Section: Introductionmentioning

confidence: 99%

Effect of fishmeal replacement by poultry by-product meal on growth performance, proximate composition, digestive enzyme activity, haematological parameters and gene expression of gilthead seabream (Sparus aurata )

et al. 2018

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In order for aquaculture to satisfy the increasing demand for farmed fish, it is essential that the sector continues searching for suitable alternatives to fishmeal (FM) that are both cost-effective and widely available. Over the last decades, plant proteins have been used successfully to reduce the inclusion levels of FM in the diets of most farmed fish species, but the high inclusion levels reduce feed intake, fish growth and nutrient bioavailability in fish body, having also negative impacts on the aquatic environment (Bell & Waagbø, 2008;Hardy, 2010). Further, the prices of many plant proteins have increased dramatically over the last decades because of the increasing demand for their use in feeds, human foods and ethanol production (Hardy, 2010). Of most importance, however, is the fact that as the aquafeed sector is expanding to satisfy the increasing demand of intensive aquaculture for aquafeeds, greater amounts of FM are required; thus, the exploration for suitable and cost-effective protein alternatives is ongoing. AbstractTwo feeding trials examined the replacement of fishmeal (FM) with poultry byproduct meal (PBM) in the diet of juvenile Sparus aurata. In Feeding trial I (100 days), three diets were formulated, where FM protein was replaced by 50% (PBM50) and 100% (PBM100) PBM, while in Feeding trial II (110 days), four diets were formulated using the same FM control diet, but FM was replaced at lower levels: 25% (PBM25), and 25% (PBM25 + ) and 50% (PBM50 + ) with the supplementation of lysine and methionine amino acids. PBM protein can successfully replace 50% of FM protein in the diet of S. aurata without adverse effects on survival, feed intake, growth performance and feed utilization, given that the diet is balanced with lysine and methionine.The proximate composition of body and muscle was unaffected by the diet, but the total FM replacement resulted in reduced lipid and energy contents in fish. A fifty per cent FM replacement by PBM did not affect haematological parameters indicating a good fish health. Similarities in trypsin and chymotrypsin activities with FM-fed fish suggest a high digestibility of PBM. High dietary levels of PBM reduced the liver gene expression of GH/IGF axis and of cathepsin D suppressing fish growth and modulating the protein turnover. K E Y W O R D Sdigestive enzymes, fishmeal replacement, gene expression, gilthead seabream, haematological parameters, poultry by-product meal

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Effects of marine protein‐, marine oil‐ and marine‐free diets on the growth performance and innate immune responses of Atlantic salmon ( Salmo salar , L.) post‐smolts

Cited by 10 publications

References 62 publications

A comparison of disease susceptibility and innate immune response between diploid and triploid Atlantic salmon (Salmo salar) siblings following experimental infection with Neoparamoeba perurans, causative agent of amoebic gill disease

A comparison of disease susceptibility and innate immune response between diploid and triploid Atlantic salmon (Salmo salar) siblings following experimental infection with Neoparamoeba perurans, causative agent of amoebic gill disease

Dietary arginine requirement in diets of GIFT strain of Nile tilapia, Oreochromis niloticus : Effects on growth performance, whole‐body composition, growth‐related gene expression and haemato‐biochemical responses

Effect of fishmeal replacement by poultry by-product meal on growth performance, proximate composition, digestive enzyme activity, haematological parameters and gene expression of gilthead seabream (Sparus aurata )

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