@conference {40743,
	title = {Industry use of the Inverdale gene (FecX)},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {298-300},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The Inverdale gene (FecX) offers the sheep industry the potential  to markedly increase production at little cost. However, the  characteristics of the gene mean that appropriate breeding structures  are essential. The recommended structure is a stratified crossbreeding  system. The three tier breeding structure consists of: (1) a ram  breeder producing rams known to carry the Inverdale gene; (2) a ewe  breeder producing carrier ewes by mating carrier rams across dual  purpose breed ewes; and (3) a lamb producer who mates a meat breed ram  with carrier ewes to produce lambs for slaughter. Some farmers may  choose to have two, or all three tiers on a single property. If the  gene was used to maximum extent possible in Romney and Romney derived  breeds, some 40\% of all breeding ewes would contain a single copy of the  gene and these would produce 31\% more lambs for sale per ewe mated.  Conservative estimates of the benefits to the New Zealand farmer are  approximately $29m per annum.   },
	issn = {1176-5283},
	author = {McEwan JC and Davis GH and Fennessy PF and Dodds KG}
}
