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	Author	Broucek, J.; Ksac, P.; Uhrincat, M.
	Title	The effect of sire line on learning and locomotor behaviour of heifers			Type	Journal Article
	Year	2003	Publication	Czech Journal of Animal Science	Abbreviated Journal	Czech J. Anim. Sci
	Volume	48	Issue		Pages	387-394
	Keywords	heifers; sire; maze; open-field test; repeatability; learning; locomotor behaviour relationship
	Abstract	ABSTRACT: e aim of this study was to test the effect of sire line on maze learning ability and locomotor behaviour in open-field tests of heifers, consistency over the time of grid crossing and relationship between the time of traversing the maze and grid crossings in open-field tests, respectively. We analysed the results of ethological tests for 54 Holstein heifers that descended from 7 sires. Maze behaviour was observed at the age of 15 weeks, an open-field test was applied at two age periods, 16 weeks and 18 months. We found out highly significant differences in the time of traversing the maze between heifers of different sire origin (P < 0.01). e number of grid crossings over the five minutes of the open-field test did not differ between the daughters of the age of 16 weeks and 18 months. Repeatability between the number of grid crossings at the age of 16 weeks and 18 months was proved by significant correlation (r = 0.2713). On the contrary, significant relationships between the times of traversing the maze and locomotor behaviour in the open-field test (r =-0.3739) were found only when the sequence of observations followed after a week pause (age of 15 and 16 weeks).
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4322
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