Adel El-Mowafi

Cargill Innovation Center · Technology Application

Disclosed are various approaches for determining an animal feed formulation. In some implementations, a system may obtain data that provides characteristics of an animal population located at a site. The system may identify a target growth schedule for the animal population. The system may use a data processing model to predict nutrition requiremen...

Abstract Atlantic salmon post-smolts of an average of 940 g were fed six diets including two marinebased commercial diets one with partial inclusion of vegetable proteins (VPs) and oils (VOs) (2011/ 12 EU standards) (MB) and a second with partial inclusion of VPs, land animal-by-product (ABP) proteins and VOs (non-EU standards) (MBABP), a fully ve...

Abstract Faba bean (Vicia faba) is a legume with good potential that has previously been tested in fish species with some promising results. The present study aimed to determine whether an air-classified faba bean protein concentrate (BPC, 615 g kg− 1 crude protein content) could offer improved or favourable growth performance, body composition and...

Triplicate groups of triploid and diploid Atlantic salmon were fed diets with a low (LP, total P: 7.1 g kg−1), medium (MP, total P: 9.4 g kg−1) or high (HP, total P: 16.3 g kg−1) phosphorous (P) level from first feeding (0.18 g) to transfer to sea water (~50 g, duration: 203 days) and subsequently fed a commercial diet in sea water for 426 days (~3...

Abstract The aim of the study was to monitor the effects of fishmeal (FM)-,fish oil(FO)- and fish-free diets on growth performance and health status of Atlantic salmon growers. Atlantic salmon post-smolts with an initial average weight of 939 g were fed in quadruplicate either a fishery based control diet or one of three plant based diets and two a...

The effects of stearidonic acid (SDA; 18:4n-3) derived from SDA-enhanced, genetically modified soybeans (Monsanto Company, St Louis, MO, USA) on growth performance and fatty acid (FA) composition of large Atlantic salmon (Salmo salar; 2.1 kg initial weight) were evaluated. There was a stepwise decrease in feed intake and subsequent weight gain of i...

Atlantic salmon fed diets devoid of fishmeal but added 0.5 g kg−1 fish protein concentrate (FPC) showed reduced growth and lipid deposition without affecting protein accretion as compared to fish fed a fishmeal‐based control diet. The aim of the current study was to assess whether higher inclusion of FPC improved the growth and lipid deposition of...

This study investigated the combined effects of photoperiod and dietary P level on bone osteoclast and osteoblast activity, and morphology, as well as plasma vitamin D status in Atlantic salmon post-smolts. The fish were reared under continuous light (LL) or 12 h light/ dark (LD) per day, and fed diets with insufficient phosphorous (P) (4 g kg(-1)...

Some polyunsaturated aldehydes (PUAs) such as 2-trans, 4-trans decadenial (A3) have a detrimental effect on the development of copepod sharmful to the salmon industrysuch as Caligus rogercresseyi (sea lice). The purpose of this study was to evaluate the potential use of A3 as a salmon feed ingredient in order to reduce reproduction of Caligus roger...

Some polyunsaturated aldehydes (PUAs) such as 2-trans, 4-trans decadenial (A3) have a detrimental effect on the development of copepod sharmful to the salmon industrysuch as Caligus rogercresseyi (sea lice). The purpose of this study was to evaluate the potential use of A3 as a salmon feed ingredient in order to reduce reproduction of Caligus roger...

The present invention relates to a propyl-methyl-phenol compound, in particular thymol and/or carvacrol or composition comprising a propyl-methyl-phenol compound for use in the treatment and/or prophylaxis of Salmonid rickettsial septicemia (SRS) and/or diseases caused by Piscirickettsia salmonis, and/or for the use in killing, combating or control...

Previously, we reported that methionine intake determined the taurine concentration in the liver of on-growing Atlantic salmon fed plant protein diets. Further, the methionine intake and/or the increased taurine concentration following increased methionine intake affected the liver lipid metabolism. The following study therefore aimed to test wheth...

This study investigated the effects of raffinose, stachyose either alone or in combination, and the role of soya-saponins in combination with these oligosaccharides, in diets for Atlantic salmon on nutrient digestibilities, growth performance and morphological changes of the gastrointestinal tract. The experiment was carried out using triplicate gr...

This invention relates to a unit for extracting water from air, comprising an air inlet comprising a first section leading the air in an at least partially downward direction to a second section containing a chosen volume of air and a third section leading the air out of the second section in an at least partially upward direction to an air outlet,...

In the current study, we tested whether the addition of a small amount of crystalline dl-methionine to a fishmeal-based diet would affect general sulphur metabolism and apparent digestibility in Atlantic salmon (Salmo salar). Triplicate tanks of salmon with mean BW of half a kilo were fed a control diet or the control diet supplemented with 0.2 wt%...

This experiment aimed to test the interaction of lysine limitation with nutrient accretion and muscle carnitine depot in Atlantic salmon. Fish were fed adequate or low-lysine diets for 3 months. Lysine intake was significantly less (48%) in fish fed the low-lysine diet as compared with that fed the adequate one. There was no difference in dietary a...

The current experiment aimed to study whether interactions with lipid metabolism possibly might explain the relative increased liver weight obtained in fish fed sub-optimal methionine levels. A basal diet based on a blend of plant proteins which is low in methionine (1.6 g Met/16 g N) was compared to a methionine adequate diet (2.2 g Met/16 g N) pr...

To date aquaculture’s reliance on dietary marine sources has been calculated on a fish weight-to-weight basis without considering the absolute amounts of nutrients but this approach neglects the often considerable differences in the nutritional value of fish. We propose simple nutrient-to-nutrient-based dependency measures that take into account th...

Nine experimental feeds were prepared, having two different digestible energy levels (DE, 19.5 and 21.5 MJ kg−1) and three different amino acid levels (90%, 100% and 110%), and formulated with two alternative strategies (protein and fat vary freely or only protein varies freely). The design was not balanced and thus the 110% amino acid profile was...

Freeze dried samples of Lantern fish (Benthosema pterotum) from Gulf of Oman were supplied by the Department of Marine Science and Fisheries, Sultan Qaboos University, Muscat, Oman for nutrient and contaminant assessment. Proximate and amino acid analysis showed that fish meal made of lantern fish is similar to South American fish meal with the exc...

To investigate the endocrine signalling from dietary plant protein on somatotropic system and gastrointestinal hormone cholecystokinin (CCK), two iso-amino acid diets based on either high plant or high fish meal protein were fed to Atlantic salmon. Salmon with an average starting weight of 641+/-23 g (N=180), were fed a fish meal (FM) based diet (c...

Use of a feed composition comprising conventional feed ingredients such as protein, lipid, ash, vitamins, minerals, carbohydrates, pigments, with a specific ration of protein to lipid is disclosed. The feed composition can be used for enhancing the fish welfare, viability or faster recovery, and/or for the prevention, alleviation and/or treatment o...

Atlantic salmon with body weight of 493 g were fed 6 graded levels of methionine in diets based on plant proteins for a period of 85 days with the aim to test whether methionine intake affected growth, nutrient accretion and hepatic sulphur metabolism. A negative control based on a mixture of plant proteins with low fish meal inclusion (5%) contain...

Nutritional factors influence regulation of the growth hormone (GH) and the insulin-like growth factor (IGF) system in fish, but so far there are no published studies describing how single indispensable amino acids influence these systems. Therefore, the present study aimed to test whether lysine (Lys) intake at low (LL=2.85 g/16 gN), medium (ML=4....

Two trials (I and II) were conducted to finally determine the Lys requirement in the Atlantic salmon during the fast growing period in seawater. First three test diets with well balanced AA's as well as a IAA:DAA ratio close to 1, but differing in amount and source of an attractant, were developed allowing for both a reduction of dietary Lys and a...

The present experiment tested whether Atlantic salmon accept, grow and utilise diets devoid of fish meal. Four diets were prepared, one reference diet in which 49% of the diet was fish meal and three diets not containing any fish meal. The amino acid composition in the test diets not containing fish meal was made similar to the reference diet by ba...

This experiment was undertaken to establish the magnesium (Mg) requirement in young Atlantic salmon, Salmo salar L., in seawater-treated fresh water. In Norwegian hatcheries it is a common practice to add sodium hydroxide and/or sea water (1–2%) to improve pH and conductivity of the natural fresh water. Parr with initial weight of 8 g, were divided...

Formulated aquaculture feeds are among the most expensive animal feeds on the market. These feeds are often high in lipids, the bulk of which is generally provided by fish oil. Because of its high cost and potential long-term supply problems, it is now widely acknowledged that fish oil should be used more sparingly in aquafeeds. Rendered animal fat...

The present experiment was undertaken to establish the dietary manganese (Mn) requirement in Atlantic salmon fry and to examine the effect of Mn intake and status on disease resistance. Salmon fry were divided into six triplicate groups and fed a casein/gelatine diet (containing 1.1 mg Mn/kg) supplemented with 0, 3, 6, 9, 12 or 24 mg Mn/kg (as MnSO...

The early humoral responses of rainbow trout, Oncorhynchus mykiss (Walbaum), and brook trout, Salvelinus fontinalis (Mitchill), with sterile inflammation induced by intraperitoneal Lipogen Triple vaccination were compared to determine if genetic differences in susceptibility to furunculosis in salmonids correlated with different acute phase respons...

In an attempt to find plasma proteins that might be involved in the constitutive resistance of rainbow trout to furunculosis, a disease caused by Aeromonas salmonicida (AS), we purified serum and plasma proteins based on their calcium- and carbohydrate-dependent affinity for A. salmonicida lipopolysaccharide (LPS) coupled to an epoxy-activated synt...

Rainbow trout are genetically resistant to Aeromonas salmonicida which causes local and systemic bacterial infections in susceptible salmonids. We examined plasma from rainbow trout for proteins with calcium-dependent binding to purified A. salmonicida lipopolysaccharides (LPS) coupled to an acrylic chromatography matrix. Four classes of proteins w...

Two groups of Atlantic salmon post-smolts previously fed diets either unsupplemented or supplemented with Zn, Fe, Cu and Mn were fasted for 6 weeks in order to study the reliability of tissue indicators of element status during fasting. The fish were weighed at 2-week intervals and samples of whole fish liver, vertebrae, serum and eyes were taken f...

The influences of dietary magnesium on immune response and on osmoregulation in parr of Atlantic salmon Salmo solar were determined. Groups of fish were fed a casein-gelatin diet unsupplemented (containing about 200 mg Mg/kg) or supplemented with either 300 or 500 mg Mg/kg dry diet (as MgSO4) for 12 weeks before vaccination to produce fish with dif...