| 摘要 |
A method of altering the phenotype of a bird comprises introducing a DNA molecul e into the muscle tissue of a bird contained within an egg during in ovo incubation. The DNA molecule is selected t o be effective to cause a change in phenotype, such as an increase in growth rate, feed efficiency, immune response, or a combinatio n of these and other phenotypes in the bird after hatch. A DNA molecule may further be selected to increase disease resistance, in duce disease prevention, or neutralize maternal antibodies by the expression of an antigen over a period of time.
|
