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The effect of days dry on milk production and fertility in subsequent lactation of high producing Holstein cows

Published online by Cambridge University Press:  22 November 2017

S Danesh Mesgaran ,
A Heravi Moussavi ,
G Koolabadi  and
A Banikamali
S Danesh Mesgaran*
Affiliation:
Dept. of Animal Science, Excellence Center for Animal Science, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran
A Heravi Moussavi
Affiliation:
Dept. of Animal Science, Excellence Center for Animal Science, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran
G Koolabadi
Affiliation:
Research Department, Dasht Co., Nayshabour, Islamic Republic of Iran
A Banikamali
Affiliation:
Research Department, Dasht Co., Nayshabour, Islamic Republic of Iran
*
Email: sadjaddm@yahoo.com
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Extract

Several studies have indicated that reducing the length of the dry period to less than 60 days had a more detrimental effect between the first and second lactation than between later lactations (Annen et al., 2004). Other studies demonstrated that a dry period less than 40 days reduces milk yield in the subsequent lactation (Sørensen and Enevoldsen., 1991). Several experiments designed to examine the effects of reducing the days dry to approximately 4 weeks have shown no difference in milk production and/or fat corrected milk in the subsequent lactation (Gulay et al., 2003). The aim of the present experiment was to determine the effect of days dry (from 10 to 90 days, 10 days interval) on subsequent milk production and fertility of high producing Iranian Holstein cows.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2009 , April 2009 , pp. 133
Copyright
Copyright © The British Society of Animal Science 2009

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References

Annen, EL, Collier, RJ, McGuire, MA, Vicini, JL, Ballam, JM and Lormore, MJ. 2004. Journal of dairy Science 86, 3027–3037.Google Scholar
Bachman, KC and Schairer, ML. 2003. Journal of Dairy Science. 86, 3027–3037.Google Scholar
Gulay, MS, Hayen, MJ, Bachman, KC, Belloso, T, Liboni, M and Head, HH. 2003. Journal of Dairy Science 86, 2030–2038.Google Scholar
Sørensen, JT, and Enevoldsen, C. 1991. Journal of Dairy Science 74, 1277–1283.CrossRefGoogle Scholar