JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 78 No. 10 2221-2229
© 1995 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Flamenbaum, I.
Right arrow Articles by Berman, A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Flamenbaum, I.
Right arrow Articles by Berman, A.

Interactions Between Body Condition at Calving and Cooling of Dairy Cows During Lactation in Summer

I. Flamenbaum 1, D. Wolfenson 1, P. L. Kunz 1, M. Maman 1, and A. Berman 1

1 Department of Animal Science, Faculty of Agriculture, The Hebrew University, Rehovot 76100, Israel and Institute of Animal Science, Swiss Federal Institute of Technology, 8092 Zurich, Switzerland

This study examined the interactions between dietary manipulation for increased body condition during the last trimester of pregnancy (spring) and postpartum cooling (summer lactation). Effects of diet on milk production of Holstein cows were examined to determine whether body stores could compensate for reduced DMI during heat stress. Cows calving between May and July with high (3.8 on a six-point scale) or low (2.7) body condition scores were assigned postpartum to be cooled by sprinkling and ventilation or to serve as uncooled controls. Cooled cows ate 1.6 kg more DM/d and consumed 9 L less of water/d than uncooled cows. Cooled cows maintained body temperatures below 38.9°C during day hours; peak body temperature for uncooled cows was 39.7°C. For 8 wk postpartum, glucose and insulin concentrations in plasma were unaltered by cooling or body condition. The NEFA were lower, and urea was slightly higher, for cows with low body condition. Milk production increased 1.9 kg/d with cooling, fat production increased with both body condition and cooling, and protein production increased with cooling but not with body condition. Performance was lowest for the uncooled subgroup with low body condition. Among cooled cows, no advantage was attributable to high body condition. An additive effect of high body condition and cooling on milk production in summer was not evident.

Key Words: body condition • cooling • heat stress • milk production

Submitted on January 11, 1995
Accepted on May 1, 1995




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
I. Halachmi
Designing the Automatic Milking Farm in a Hot Climate
J Dairy Sci, March 1, 2004; 87(3): 764 - 775.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
N. R. St-Pierre, B. Cobanov, and G. Schnitkey
Economic Losses from Heat Stress by US Livestock Industries
J Dairy Sci, July 1, 2003; 86(13_suppl): E52 - 77.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
E. R. Jordan
Effects of Heat Stress on Reproduction
J Dairy Sci, July 1, 2003; 86(13_suppl): E104 - 114.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1995 by the American Dairy Science Association ®.