Composition containing a hyperimmunized egg product useful for increasing weight gain and feed efficiency

摘要

A method for increasing weight gain in a healthy animal such as an avian comprises administering to the animal an effective amount of an egg product. The egg product is obtained from an egg-producing animal, which has been hyperimmunized with an immunogenic vaccine. The vaccine comprises at least one immunogen selected from the following bacterial strains Escherichia coli; Escherichia coli (Aerobacter); Klebsiella pneumoniae; Pseudomonas aeruginosa; Salmonella typhimurium; Shigella dysenteriae; Salmonella enteriditis; Staphylococcus epidermis; Staphylococcus simulans; Streptococcus pyogenes types 1, 3, 5, 8, 12, 14, 18 and 22; Proteus vulgaris; Streptococcus agalactiae; Streptococcus mitis; Streptococcus mutans; Streptococcus salavarius; Streptococcus sanguis; Streptococcus pneumoniae; Propionibacterium acnes and Haemophilis influenzae. The egg product can be the whole egg, egg yolk, egg white and any fraction thereof. The egg product can be also used to treat weight loss due to cacheixa, wasting disease, cancer and HIV infection.