Dr. Moth commenced work as a geneticist in the Australian poultry industry in 1976 and during his career has been employed by most of the major Australian poultry breeding companies, including Rochedale Hatchery (Senior Geneticist and Sales Manager), Hy-Line Chicks (General Manager), Table Talk Poultry Farms (Senior Geneticist and Manager - Breeding Division), Australian Poultry/Steggles (Technical Director) and Hy-Line Australia (Managing Director).

Dr. Moth developed the highly successful Siro-CT and Siro-CB layers in association with CSIRO and later developed the Hy-Line Gold layer. Dr. Moth also had involvement in the ongoing development of the Rochedale 440, Hy-Line Tint, and Hy-Line Brown layers.

In meat chickens, Dr. Moth developed the Hywate broiler and was involved in the ongoing development of the Hy-Line and Steggles broilers. Dr. Moth has also served as a committee member of the Australian Chicken Meat Research Committee.

Dr. Moth has developed the Nulkaba Brown Egg layer specifically for the barn and free range production environments and is responsible for its ongoing genetic improvement. Dr. Moth is now concentrating on the development of quail and ducks for meat production in the barn and free range environments.