Complete feed for fish larvae and method for preparing same

1. A complete feed composition for fish larvae, comprising:

i) a phospholipid content ranging from 10 to 20% by weight of the dry matter of said feed;

ii) non-hydrolyzed protein ranging between 45 and 60% by weight of the dry matter of said feed; and

iii) hydrolyzed proteins ranging between 10 and 22% of the dry matter feed.

2. The composition according to claim 1 , wherein said composition has a phospholipid content from vegetal origin at least equal to 6% of the feed dry matter.

3. The composition according to claim 1 , wherein said composition has a total lipid content higher than 25% by weight of the dry matter.

4. The composition according to claim 1 , wherein said composition additionally comprises a vitamin additive blend.

5. The composition according to claim 1 , wherein said composition additionally comprises a mineral additive blend.

6. The composition according to claim 5 , comprising a content of 14% of hydrolyzed proteins by weight dry matter.

7. The composition according to claim 1 , wherein said composition additionally comprises an appetizing factor.

8. The composition according to claim 1 , wherein said composition comprises a water content lower than 14% by weight of the final composition.

9. The composition according to claim 1 , wherein said composition has the following:

Ingredients

% of dry matter

Fish meal

56

Fish soluable protein concentrate

14

Soya lecithin

17

Vitamin blend

8

Mineral blend

4

Betaine

1.

10. The feed composition according to claim 1 , comprising a content of 14% of hydrolyzed proteins by weight dry matter.

11. The composition according to claim 1 , wherein vegetal lecithin is present and accounts for more than 50% of said phospholipids present in said feed.

12. A complete mixed feed for fish larvae made of granules having a composition according to claim 1 .

13. The feed according to claim 12 , wherein the granule size is lower than 660 μm.

14. A method for preparing a complete feed according to claim 12 , comprising the following steps of:

a) obtaining a paste by mixing water and at least three raw materials in the following proportions:

(i) fish meal in proportion ranging from 50 to 60% by weight of the final blend;

(ii) fish soluble protein concentrate in a proportion ranging form 10 to 22% by weight of the final blend;

(iii) soya lecithin in a proportion ranging from 7 to 25% by weight of the final blend;

b) granulating, by wet route, the paste thus obtained in the form of filaments;

c) deep-freezing the paste filaments at a low temperature, preferably at a temperature lower than −80° C.;

d) crushing and/or grinding the paste filaments deep-frozen at step c);

e) sieving the granules obtained in the crushing step.

15. The method according to claim 14 , wherein the water is added, upon the blending step a), in an amount ranging from 10 to 15% by weight of the blend.

16. A feed composition for fish larvae, comprising:

a phospholipid content ranging from 10 to 20% by weight dry matter of said feed,

a total lipid content is higher than 25% by weight of dry matter, a fish meal content ranging between 50 and 65% by weight of dry matter, and

hydrolyzed proteins ranges from 10 to 22% of dry matter.

17. The feed composition according to claim 16 , comprising a content of 14% of hydrolyzed proteins by weight dry matter.

18. The feed composition according to claim 16 , wherein vegetal lecithin is present and accounts for more than 50% of said phospholipids present in said feed.

19. A complete feed composition for fish larvae, comprising:

i) a phospholipid content ranging from 10 to 20% by weight dry matter of said feed,

ii) a protein content comprising

non-hydrolyzed protein comprising fish meal between 45 and 60% by weight of the dry matter of said feed composition, and

hydrolyzed proteins ranging between 10 and 22% by weight dry matter of said feed composition, and

iii) a final water content not higher than 14%, and

iv) a total lipid content higher than 25% by weight dry matter of said feed; and

wherein the feed composition is in the form of granules smaller than 600 μm in size.

20. The feed composition according to claim 19 , wherein vegetal lecithin is present and accounts for more than 50% of said phospholipids present in said feed.