@conference {40325,
	title = {The selection and breeding of Merino sheep for footrot resistance},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {283-286},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {An efficient farm AI system for sheep requires ready  identification of, and access to, oestrus ewes. It is well known that  ewes in oestrus seek out and remain near rams. The present experiment  evaluated a variety of systems for trapping oestrus ewes attracted to  two decoy rams.   These systems included traps with one or two entrances, and traps sited  1.5 or 6 m from the rams. In each trial, 13 to 16 ewes in a flock of 45  mixed age and mixed breed sheep were artificially induced into oestrus  and the proportions of oestrus ewes entering the trap was recorded. In  addition, the trapping rate in a flock of naturally cycling 1},
	issn = {1176-5283},
	author = {Paterson R and Paterson H}
}
