Abstract: A method of enhancing the growth of a bird is described. The method comprises (a) administering a compound selected from the group consisting of IGF-1, IGF-2 and active analogs thereof to a bird in ovo; then (b) incubating the bird to hatch; and then (c) growing the bird for at least three weeks after hatch. The compound is administered in ovo in an amount sufficient to enhance the growth of the bird at least three weeks after hatch. Preferred birds for practicing the present invention are chickens, and preferred compounds for practicing the present invention are IGF-1 and analogs thereof. The use of IGF-1, IGF-2 and active analogs thereof for the preparation of a medicament for administration to birds in ovo to ehance the growth of the bird at least three weeks after hatch is also disclosed, along with the pharmaceutical formulations so prepared.

Abstract: A plasmid encoding a fusion protein comprising a first polypeptide having growth hormone activity and a second polypeptide which may be one of insulin growth factor (IGF)-I or IGF-II and their analogues, chicken histone H2A.I or human transcription factor SPI-lac Z with an optional cleavage sequence between the first and second polypeptides. The fusion protein may be used: 1) to treat growth hormone deficiencies; 2) to suppress loss of body protein following trauma such as burns or infection; 3) for farm animals to increase growth rates and efficiency of food conversion; 4) and to support growth of cells in culture.

Abstract: A peptide analogue of mammalian insulin-like growth factor-1 wherein from 1 to 5 amino acid residues are absent from the N-terminal.