Passively administered antibody that enhances feed conversion efficiency

• US 5,741,489 A
• Filed: 05/24/1996
• Issued: 04/21/1998
• Est. Priority Date: 05/24/1996
• Status: Expired due to Term

• Current Assignee: Anitox Corporation
• Original Assignee: Anitox Corporation
• Inventors: Pimentel, Julio
• Primary Examiner(s): Eisenschenk, Frank C.
• Assistant Examiner(s): RABIN, EVELYN MARIE
• Application Number:
  US08/653,604
• Time in Patent Office: 697 Days
• Field of Search: 424/130.1, 424/157.1, 424/158.1, 424/163.1, 424/164.1, 424/802, 424/803, 424/804, 530/388.26, 530/389.1
• US Class Current: 424/157.1
• CPC Class Codes: A23K 20/00 Accessory food factors for animal feeding-stuffs
• CPC Class Codes: A23K 50/30 for swines
• CPC Class Codes: C07K 16/40 against enzymes
• CPC Class Codes: Y10S 424/804 involving IgG3, IgG4, IgA, or IgY

Abstract

A method for increasing feed conversion efficiency in mammals, such as swine, wherein the mammal is fed a diet containing an antibody produced using the enzyme urease as the antigen.

Claims

1. A method for increasing feed conversion efficiency in swine comprising:

feeding swine a diet containing an effective amount of an antibody which binds to urease wherein said diet is provided from starter period through market weight.

2. The method of claim 1 wherein the urease is jackbean urease.

3. The method of claim 1 wherein the feed contains 25 to 100 mg of purified antibody per ton of feed.

4. A method of claim 1 wherein the antibody was produced in eggs.

5. The method of claim 4 wherein the antibody was produced in chicken eggs.

6. The method of claim 4 wherein the eggs have been dried and added to the feed.

7. The method of claim 3 wherein said mammal is fed said feed for at least four consecutive weeks.

8. The method of claim 6 wherein the eggs have been freeze dried and heated at 50°

-70°

C. to improve antibody stability.