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Journal of Dairy Science Vol. 80 No. 10 2411-2417
© 1997 by American Dairy Science Association ®
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The Effects of Restraint Using Self-Locking Stanchions on Dairy Cows in Relation to Behavior, Feed Intake, Physiological Parameters, Health, and Milk Yield

D. J. Bolinger 1, J. L. Albright 1, J. Morrow-Tesch 1, S. J. Kenyon 1, and M. D. Cunningham 1

1 Department of Animal Sciences, Purdue University, West Lafayette, IN 47907

Holstein cows (n = 64) ranging from peak to end lactation were restrained in self-locking stanchions (i.e., head locks) for approximately 4 h/d for four periods in a modified switchback design. Milk yield, milk fat percentage, somatic cell count, and dry matter intake and dry matter intake were unaffected by restraint. Milk protein percentage was significantly lower for cows that were restrained. Plasma cortisol concentrations and the ratio of neutrophils to mononuclear cells were not significantly different between restrained and unrestrained (control) cows. No difference in the incidence of mastitis or other health concerns was noted. Behaviorally, cows that were locked in the stanchions spent significantly more time lying after release from restraint. For cows that were locked up, eating frequency over 24 h was significantly reduced, but dry matter intake was not affected. Total rumination frequency over 24 h was not significantly different for cows that were restraubed; however, cows that were restrained ruminated less during the day following release. Grooming was considered to be a behavioral need and was significantly increased during all times when cows were not locked up. Grooming was also one of the first behaviors performed following release. Acts of aggression were elevated during all periods following restraint, but oral behaviors, such as tongue playing and chewing on objects, drinking behavior, and resting postures were not affected. The use of self-locking stanchions did not appear to affect substantially the overall well-being of the cow.

Key Words: behavior • physiological parameters • restraint • well-being

Submitted on September 26, 1996
Accepted on April 9, 1997




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