Feed additive
Present invention relates to the use of hydroxytyrosol (HT), maslinic acid (MA) and oleanolic acid (OA) as additive in feed for a domesticated animal at very early days of life or from birth. The invention provides an additive with particular amounts of these three ingredients and an additivated feedstuff ready to use comprising said additive.
1 . A feedstuff comprising an additive for a domesticated animal at a non-reproductive age, the additive comprising hydroxytyrosol, maslinic acid and oleanolic acid, wherein hydroxytyrosol is in a percentage by weight from 0.3% to 5.0% w/w, maslinic acid is in a percentage by weight from 2.0% to 20% w/w, and oleanolic acid is in a percentage by weight from 0.5% to 15% w/w to obtain a final feedstuff, all percentages in relation to the total weight of the additive;
wherein maslinic acid and hydroxytyrosol are in a weight ratio (MA/HT) in the final feedstuff from 2:1 to 20:1 and maslinic acid and oleanolic acid are in a weight ratio (MA/OA) in the final feedstuff from 1:1 to 10:1, and wherein the feedstuff comprises an amount of additive giving hydroxytyrosol at a concentration from 2.5 ppm to 20 ppm, maslinic acid at a concentration of at least 10 ppm and up to 75 ppm, and a concentration of oleanolic acid of at least 5 ppm and up to 35 ppm, all concentrations in relation to the total weight of the feedstuff.
2 . The feedstuff according to claim 1 , wherein maslinic acid and hydroxytyrosol are in a weight ratio (MA/HT) in the final feedstuff from 2.0:1 to 4.0:1, and the ratio of maslinic acid and oleanolic acid (MA/OA) in the final feedstuff is from 1.0:1 to 2.0:1.
3 . The feedstuff according to claim 1 , wherein the weight ratio of maslinic acid and hydroxytyrosol (MA/HT) in the final feedstuff is from 6.0:1 to 20.0:1, and the weight ratio of maslinic acid and of oleanolic acid (MA/OA) in the final feedstuff is from 1.0:1 to 2.0:1.
4 . A method for preparing a feed for a domestical animal, the method comprising adding to a first feed for a domesticated animal an additive comprising hydroxytyrosol, maslinic acid and oleanolic acid, in which hydroxytyrosol is in a percentage by weight from 0.3% to 5.0% w/w, maslinic acid is in a percentage by weight from 2.0% to 20% w/w, and oleanolic acid is in a percentage by weight from 0.5% to 15% w/w to obtain a final feed, all percentages in relation to the total weight of the additive;
wherein maslinic acid and hydroxytyrosol are in a weight ratio (MA/HT) from 2:1 to 20:1 in the final feed and maslinic acid and oleanolic acid are in a weight ratio (MA/OA) in the final feed from 1:1 to 10:1, and
wherein the final feed comprises an amount of additive giving hydroxytyrosol at a concentration from 2.5 ppm to 20 ppm, maslinic acid at a concentration of at least 10 ppm and up to 75 ppm, and a concentration of oleanolic acid of at least 5 ppm and up to 35 ppm, all concentrations in relation to the total weight of the final feed.
5 . The method according to claim 4 , wherein the feed is for a piglet and/or a weaner.
6 . The method according to claim 4 , wherein the feed is for a broiler from hatch to 35 days post-hatch.
7 . The method according to claim 4 , wherein the feed is for a turkey from hatch to 84 days post-hatch.
8 . The feedstuff according to claim 1 , wherein the additive comprises a binder and wherein the additive is in particulate form with a mean particle size higher than 500 μm, and where more than 70% of the particles have a particle diameter higher than 400 μm and less than 30% of the particles have a particle diameter lower than 250 μm.
9 . The feedstuff according to claim 8 , wherein the binder is selected from the group consisting of a mineral oil, petrolatum, vegetal origin oil and mixtures thereof.