In the 1st experiment, high oestrus detection rates (percentage of cycling gilts that were detected in oestrus) were achieved when cycling gilts which were kept near (but not adjacent to) boars, were checked for oestrus using either the back-pressure test (BPT) in close proximity to boars or a direct test by a boar (100% oestrus detection rate for both procedures). In the 2nd experiment, a lower proportion of gilts were detected in oestrus using the back-pressure test when cycling gilts were continuously housed in pens adjacent to boars, separated by a wire-mesh wall, rather than when housed in pens separated from boars by a 1.0-m-wide corridor (81 and 100% resp.). The oestrus detection rate was improved in the former housing treatment when a boar was used to detect oestrus rather than the BPT (95 and 81% resp.). The implications of the results for the design of penning arrangements in the mating compartment are discussed.
|Publication Title||Applied Animal Behaviour Science|
|Author Address||Animal Research Institite, Department of Agriculture and Rural Affairs, Werribee, Vic. 3030, Australia.|
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