HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Araki, C. T. Articles by Clarke, N. L. Search for Related Content PubMed PubMed Citation Articles by Araki, C. T. Articles by Clarke, N. L.

Diurnal Temperature Patterns of Early Lactating Cows with Milking Parlor Cooling^{1, 2,}

Department of Animal Sciences, University of Hawaii, Honolulu 96822

ABSTRACT

Ten cows in early stages of lactation (less than 100 days postpartum) were used to test the effect of sprinkler/fan cooling on vaginal temperature patterns. Cows were assigned to two groups matched according to milk production. The trial was divided into three periods: period 1, when one group was treated and the other group was not, period 2, when neither group was treated, and period 3, when treatment was switched from period 1 between groups. Treatment consisted of forced air misting in a pre-milking holding pen, fan cooling during milking, and forced air-sprinkling in a postmilking holding area. Weather conditions were measured by dry bulb, wet bulb, and black globe temperatures. Black globe temperatures in pre- and postmilking holding areas were used to estimate treatment magnitude. All measures were obtained through radiotelemetry at 15-min intervals for 31 days. Animals were milked twice a day. Animals spent an average of 140 min in treatment at each milking. In both morning and afternoon milking, treatment caused a transient increase of body temperature. However, this was followed in the afternoon by low vaginal temperatures for 1 to 2 h beyond treatment with lower temperatures throughout the day.

¹ This work was supported by Grant No. 58-9AHZ-0-532 from the US Department of Agriculture, Science and Education Administration, Agricultural Research Service.

² Journal Series No. 2914 of the Hawaii Institute of Tropical Agriculture and Human Resources.

This article has been cited by other articles:

				P. E. Kendall, G. A. Verkerk, J. R. Webster, and C. B. Tucker Sprinklers and Shade Cool Cows and Reduce Insect-Avoidance Behavior in Pasture-Based Dairy Systems J Dairy Sci, August 1, 2007; 90(8): 3671 - 3680. [Abstract] [Full Text] [PDF]