He says that cod reacts to different raw materials in feed; he needs various nutrients but especially a great need for protein, which is a necessary element for the development of fish flesh. Protein, on the other hand, is the most expensive raw material in animal feed. "It does not really matter to the cod to get all the protein from high-quality fishmeal, but it can to a certain extent use other types of fishmeal and protein from the vegetable kingdom," says J\u00f3n.<\/p>\n\n\n\n
![\"Fish](\"https:\/\/gamla.matis.is\/media\/frettir\/medium\/Brussel.jpg\")
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The results of experiments with different amounts of protein in the feed show that there is no statistical difference in growth if the protein is increased in excess of 48% to 70 gr. fish. Then there is no benefit in increasing protein in excess of 39-43% in feed for 600 gr. fish. It is therefore possible to reduce the cost of raw materials by lowering the protein content of feed from what it is today without compromising growth.<\/p>\n\n\n\n
J\u00f3n also says that the increase in fat in the feed causes some increase in the liver percentage in 500-800 grams. cod but it is within what has been found in wild cod inland. However, there is a significantly higher liver percentage in smaller cod with increased fat in the feed. This means that protein can be replaced by fat to a certain extent.<\/p>\n\n\n\n
Unequivocal results<\/strong><\/p>\n\n\n\n The results of the project indicate that there are various options for reducing feed costs. You can use different ingredients and reduce protein compared to today's use. It is also possible to use more fat, especially in larger fish.<\/p>\n\n\n\n J\u00f3n says that the results of research on feed for cod farming in this country are unequivocal. "The results indicate that it is possible to reduce feed prices by 30% and thereby reduce production costs for cod by 15%, if raw material prices are taken into account from earlier this year. There are also opportunities to reduce feed costs even further by precisely adjusting the proportions of raw materials in the feed, taking into account the digestibility of the nutrients in them. "<\/p>","protected":false},"excerpt":{"rendered":" H\u00e6gt er a\u00f0 l\u00e6kka f\u00f3\u00f0urver\u00f0 fyrir eldis\u00feorsk um allt a\u00f0 \u00fev\u00ed 30% og l\u00e6kka \u00fear me\u00f0 framlei\u00f0slukostna\u00f0 um 15% me\u00f0 […]<\/p>\n","protected":false},"author":1,"featured_media":33215,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"templates\/template-cover.php","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1973],"tags":[],"class_list":["post-43596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frettir"],"acf":[],"yoast_head":"\n