Impact of calving interval on milk yield and longevity of primiparous Estonian Holstein cows

Aadi Remmik, Rando Värnik and Kalle Kask
Additional contact information
Aadi Remmik: Institute of Economics and Social Sciences, Estonian University of Life Sciences, Tartu, Estonia
Rando Värnik: Institute of Economics and Social Sciences, Estonian University of Life Sciences, Tartu, Estonia
Kalle Kask: Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Tartu, Estonia

Czech Journal of Animal Science, 2020, vol. 65, issue 10, 365-372

Abstract: Data about 4 474 high-yielding Estonian Holstein dairy cows from 14 herds was analysed for the impact of the first calving interval length (CI1) on milk yield (MY) and lactation persistency. The results show that cows with CI1 shorter than 12 months have on average 2 345 kg lower milk yield in the first 1 000 days of productive lifetime than those with CI1 between 14 and 16 months. This is caused by lower MY in both the first and the second lactation as well as higher probability of being culled before reaching 1 000 days of productive life.

Keywords: dairy; lactation; persistency (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://cjas.agriculturejournals.cz/doi/10.17221/130/2020-CJAS.html (text/html)
http://cjas.agriculturejournals.cz/doi/10.17221/130/2020-CJAS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:65:y:2020:i:10:id:130-2020-cjas

DOI: 10.17221/130/2020-CJAS

Access Statistics for this article

Czech Journal of Animal Science is currently edited by Bc. Michaela Polcarová

More articles in Czech Journal of Animal Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().