Fish fodder for freshwater fish and use of such fodder

• US 8,632,830 B2
• Filed: 09/02/2004
• Issued: 01/21/2014
• Est. Priority Date: 09/15/2003
• Status: Active Grant

• Current Assignee: Trouw International B.V. (SHV Holdings NV)
• Original Assignee: Trouw International B.V. (SHV Holdings NV)
• Inventors: Obach, Alex, Koppe, Wolfgang M., Martens, Laura Gil, Vikes, Vibeke
• Primary Examiner(s): SAYALA, CHHAYA D
• Application Number:
  US10/571,965
• Publication Number:
  US 20060233916A1
• Time in Patent Office: 3,428 Days
• Field of Search: 426/74, 426/805
• US Class Current: 426/74
• CPC Class Codes: A23K 20/26 Compounds containing phosphorus
• CPC Class Codes: A23K 40/20 by moulding, e.g. making cakes or briquettes
• CPC Class Codes: A23K 40/25 by extrusion
• CPC Class Codes: A23K 50/80 for aquatic animals, e.g. fish, crustaceans or molluscs
• CPC Class Codes: Y02A 40/81 Aquaculture, e.g. of fish

Abstract

A rearing fodder of extruded fodder type, comprising proteins, fats and carbohydrates, for freshwater fish, wherein the fish is larger than 2 grams, and wherein the freshwater has a content of CO₂ being above 5 milligrams/liter, wherein the fodder has an increased content of at least one of the minerals: phosphate (P), potassium (K), calcium (Ca), sodium (Na) and magnesium (Mg) beyond what exists naturally in the used protein raw materials, fat raw materials and carbohydrate raw materials, wherein the collective amount of minerals in the extruded fodder is at least 10%, on a dry substance basis, of the total weight of the fodder, and wherein one or more of the minerals phosphate (P), potassium (K), calcium (Ca), sodium (Na) and magnesium (Mg) is/are added beyond what exist in the used protein raw materials, fat raw materials and carbohydrate raw materials.

Claims

1. An extruded rearing fish fodder for fresh water fish, comprising proteins, fats and carbohydrates and the extruded fish fodder further comprising at least 1.09% of phosphorous (P), at least 0.72% of potassium (K), at least 1.34% of calcium (Ca), at least 0.64% of sodium (Na) and at least 0.17% of magnesium (Mg), on a dry substance basis, of the total weight of the fodder;

wherein the summed total amount of phosphorous, potassium, calcium, sodium and magnesium in the extruded fodder is at least 5.79% and less than 7.31% on a dry substance basis, of the total weight of the fodder.

2. The rearing fish fodder according to claim 1, wherein the amount of phosphorous (P) is within the range 1.1-2.1%, on a dry substance basis, of the total weight of the fodder.

3. The rearing fish fodder according to claim 1, wherein the amount of potassium (K) is within the range 0.7-1.1%, on a dry substance basis, of the total weight of the fodder.

4. The rearing fish fodder according to claim 1, wherein the amount of calcium (Ca) is within the range 1.3-3.0%, on a dry substance basis, of the total weight of the fodder.

5. The rearing fish fodder according to claim 1, wherein the amount of sodium (Na) is within the range 0.6-0.9%, on a dry substance basis, of the total weight of the fodder.

6. The rearing fish fodder according to claim 1, wherein the amount of magnesium (Mg) is within the range of 0.17-0.21%, on a dry substance basis, of the total weight of the fodder.

9. The rearing fish fodder according to claim 1, wherein the summed amount of phosphorous, potassium, calcium and magnesium in the extruded fodder is at least 4.99% and less than 6.34% on a dry substance basis, of the total weight of the fodder.

10. The rearing fish fodder according to claim 1, wherein the summed amount of phosphorous, potassium, and magnesium in the extruded fodder is at least 3.21% and less than 4.31% on a dry substance basis, of the total weight of the fodder.

7. A method of improving the growth of a freshwater fish, the method comprising the steps of:

providing an extruded rearing fodder, the fodder comprising proteins, fats, carbohydrates, and at least 1.09% of phosphorous (P), at least 0.72% of potassium (K), at least 1.34% of calcium (Ca), at least 0.64% of sodium (Na), and at least 0.17% of magnesium (Mg) on a dry substance basis, of the total weight of the fodder; and

the summed amount of phosphorous, potassium, calcium, sodium and magnesium in the extruded fodder is at least 5.79% and less than 7.31% on a dry substance basis of the total weight of the fodder; and

feeding said enhanced fish fodder to fish which reside in freshwater.

8. The method of claim 7 wherein said fish are larger than 2 grams.