Fish fodder for freshwater fish and use of such fodder

• US 20060233916A1
• Filed: 09/02/2004
• Published: 10/19/2006
• 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: Vikeså, Vibeke, Martens, Laura Gill, Koppe, Wolfgang M., Obach, Alex
• Granted Patent: US 8,632,830 B2
• Time in Patent Office: Days
• 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/litre, 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. 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/litre, 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, characterised in that 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.

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

3. The rearing fodder according to claim 1, characterised in that 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 fodder according to claim 1, characterised in that 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 fodder according to claim 1, characterised in that 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 fodder according to claim 1, characterised in that 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.

7. Use of an extruded rearing fodder according to any of the preceding claims for feeding of freshwater fish, wherein the fish is larger than 2 grams, and the water has a content of CO₂ being above 5 milligrams/litre.