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


     

Journal of Dairy Science Vol. 84 No. 10 2314-2320
© 2001 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 Barash, H.
Right arrow Articles by Ezra, E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Barash, H.
Right arrow Articles by Ezra, E.

Interrelationships Among Ambient Temperature, Day Length, and Milk Yield in Dairy Cows Under a Mediterranean Climate

H. Barash 1, N. Silanikove 1, A. Shamay 1, and E. Ezra 2

1 Institute of Animal Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250 Israel
2 Israel Cattle Breeders Association, PO Box 3015, Qesarya Industrial Park 38900, Israel

We examined the effect of calving month (CM) on the production of milk and milk protein by Israeli Holstein dairy cows located in the main climatic zone of Israel during their third and fourth lactations, and found it to be significant. Cows that calved in December produced the highest milk and milk protein yields, and those that calved in June produced the lowest, 92.8% of the maximum. The combined effect of the environmental average temperature and day length accounted for 0.96 of the variability in average milk production during lactation and 0.93 of that in average protein production during lactation. Average milk production was reduced by 0.38 kg/°C and average protein production was reduced by 0.01 kg/°C. Elongation of daylight increased average milk production by 1.2 kg/h and average protein production by 0.02 kg/h of daylight. Analysis of the temperature pattern effect on milk and protein yield during lactation indicated that cows at the second month (the pike of their milk yield) are more vulnerable to the negative temperature effect than cows on the ninth month of lactation.

Key Words: cow • milk-yield • temperature • light

Submitted on March 1, 2001
Accepted on June 1, 2001




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
A. C. Whist, O. Osteras, and L. Solverod
Streptococcus dysgalactiae Isolates at Calving and Lactation Performance Within the Same Lactation
J Dairy Sci, February 1, 2007; 90(2): 766 - 778.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
A. Arieli, G. Adin, and I. Bruckental
The Effect of Protein Intake on Performance of Cows in Hot Environmental Temperatures
J Dairy Sci, March 1, 2004; 87(3): 620 - 629.
[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 HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Dairy Science Association ®.