@conference {40751,
	title = {New sheep - a catalyst for change},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {318-320},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {New sheep may be alternative breeds brought in from other  environments, new synthetic breeds developed by crossbreeding or as  specific crossbred combinations, or new strains of existing breeding  populations developed by selection for production traits, identifiable  genes or gene complexes. Changing gene frequency is the main underlying  feature of all these approaches to genetic improvement. Selection of  parents is the common operational ingredient.    New products have been a major factor in changing the breed structure of  our sheep industry. New more productive breeds have also been produced  utilising the complementary features of existing breeds, but with little  widespread development of crossbreeding systems based on first cross  ewes.    Improved reproductive rate from selection or use of new fecund genotypes  offers much scope for specialised production of quality market lambs,  especially when stratified production a major stimulus to the  improvement of terminal sire breeds. They are re-focusing the balance  of emphasis on lamb growth and carcass and encourage a search for unique  genetic effects on meat quality traits.   },
	issn = {1176-5283},
	author = {Clarke JN}
}
