Acronym NA
Category
Marine Biotechnology
Title Videreforedling av marine restråstoff for økt produksjon og helse hos gris, fjørfe og kjæledyr - Further processing of marine residual raw materials for increased production and health in pigs, poultry and pets Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Hallgeir Sterten Coordinator email hallgeir.sterten@fkf.no
Coordinator institution
FKF - Felleskjøpet Fôrutvikling AS (Norway)
Institutions involved
NA
Start year 2012 End year 2015 Funding (€) € 181,000 Website https://prosjektbanken.forskningsradet.no/en/project/FORISS/221364?Kilde=FORISS&distribution=Ar&chart=bar&calcType=funding&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=60&TemaEmne.2=Mat+-+Bl%C3%A5gr%C3%B8nn&source=FORISS&projectId=290318 Summary "Hydrolysis of salmon rest raw materials, influence of process conditions and evaluation of hydrolysate in diets for broiler chickens, piglets and dogs.
Annually Norway produces 1.3 million tons of Atlantic salmon and the production is still rising. After withdrawal of eviscerated fish and filet, approx. 336 000 tons of rest raw material are available for further processing. The major constituents of salmon rest raw material is viscera, heads, frames and skin. The general goal when utilizing rest raw material from aquaculture is to increase sustainability and exploit valuable marine proteins and oil. The amino-acid composition in fish is well balanced and therefore marine protein has high nutritional value in animals.
About 50% of the rest raw material from aquaculture in Norway is used to produce a semisolid fluid called salmon-silage supplying the animal feed industry, where it is known to be rich in marine proteins and oil. It is however possible to increase the value of this rest raw material by milder processes e.g. hydrolysis, allowing to exploit proteins and extract oil in order to supply the market with higher value products with desired features.
The hydrolysis process is achieved by activity of enzymes at certain temperature for a defined time. During the hydrolysis process, smaller peptides and free amino acids are formed and solubilized in an aqueous phase called salmon protein hydrolysate (SPH). Hydrolysates containing peptides are shown to be more efficiently absorbed in the small intestine of monogastrics compared to both intact protein and free amino acids. In addition, it is documented that hydrolysates from marine sources have functional and bioactive properties.
Broiler chickens and piglets are more prone to small intestinal dysfunction linked to retarded growth or enteric diseases the first 14 days post hatch and post weaning respectively. Traditionally in Norway, fishmeal is used during these periods, as the content of easily digestible protein with well-balanced amino acid composition is high. In dogs allergies and sensitivity are becoming more common, and hydrolysed protein sources in dog feed are thought to reduce the problems with allergenic reactions. In general, the content of peptides in the hydrolysates is thought to improve intestinal function and intestinal health that is important for high utilization of feed, improved growth and disease resistance.
The overall aim of this study was to develop protein feed ingredient(s) from Atlantic salmon rest raw materials with higher nutritional value than fishmeal for inclusion in feed formulations for broiler chickens, piglets and dogs. One experiment evaluated the influence of process conditions during hydrolysis of salmon rest raw material on hydrolysate yield and composition, whereas two other experiments evaluated the influence of SPH in diets for broiler chickens and piglets on growth performance and intestinal health. Besides digestibility of SPH in minks and palatability in dogs was examined.
Results of the study
In an experiment evaluating the influence of process conditions during hydrolysis, we saw small differences in yield, protein recovery, degree of hydrolysis, amino acid composition, nutritional value or number of different bioactive peptides detected when commercial enzymes were used compared to endogenous enzymes on the same substrate.
In the experiment with broiler chickens, SPH in the starter diet significantly increased average daily gain (ADG) compared to plant protein and fish meal based diets. Morphometric analysis showed increased duodenal villus height and tendencies to increased ileal villus height and villus absorption area when marine proteins were included in the diets.
In piglets we did not find differences in growth performance when comparing SPH with fishmeal or plant protein based diets. The piglets fed diets containing marine proteins showed higher duodenal villus height and absorption area compared to piglets fed a plant protein based diet.
In both broiler chickens and piglets we were found a significant positive correlation between duodenal villus height, and ADG during the first 10 days post hatch and 11 days post weaning in broiler chickens and piglets respectively, indicating the importance of intestinal development and maintenance in both broiler chickens and piglets for growth performance.
Mink digestibility of protein was found to be similar or higher than LT Fishmeal. The palatability test with dogs showed no negative reactions on SPH in the diet, rather the opposite.
In conclusion, enzymatic hydrolysis seem to be a feasible way to extract nutritional valuable proteins and peptides from Atlantic salmon rest raw materials and salmon protein hydrolysate is found to be an excellent novel source of proteins well suited for inclusion in diets for broiler chickens, weaning piglets and dogs.
Golas:
(1) Develop new feed raw materials for pigs, poultry and petfood based on waste material from slaughtering of farmed salmon; (2) Develop optimal processing of salmon waste products; (3) Come up with possible documentation of positive effects of these new ingredients in animal feed implementation of new feed stuffs in commercial animal diets."
Keywords
Bioprospecting;
Protein;
Salmon;
Fish;
Animal feed;
Wastes;
Waste valorization;
Marine Region
76
Not associated to marine areas
0
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