Gustafsson, Hans
- Swedish Dairy Association
Abstract
The total percentage of RB animals was 10.1% and the median proportion of RB animals in the herds studied was 7.5%. The proportion of RB cows in herds increased with decreased herd sizes with decreased average days from calving to first AI, with increased herd incidence of clinical mastitis, with decreased reproductive disorders, and increased other diseases treated by a veterinarian. On animal level, the risk factors were milk yield, lactation number, difficult calving or dystocia, season at first service, days in milk at first service and veterinary treatment for reproductive disorders before the first service. Cows being an RB animal in the previous lactation had a higher risk of becoming an RB animal also in the present lactation. In conclusion our results show that the repeat breeding syndrome is a multifactorial problem involving a number of extrinsic factors as well as intrinsic factors coupled to the individual animal.
Keywords
fertility; repeat breeder; dairy cow
Published in
Acta Veterinaria Scandinavica
2002, volume: 43, number: 2, pages: 115-125
Publisher: DANSKE DYRLAEGEFORENING
SLU Authors
Emanuelson, Ulf
- Department of Animal Biosciences, Swedish University of Agricultural Sciences
- Department of Animal Biosciences, Swedish University of Agricultural Sciences
UKÄ Subject classification
Other Veterinary Science
Publication identifier
- DOI: https://doi.org/10.1186/1751-0147-43-115
Permanent link to this page (URI)
https://res.slu.se/id/publ/48925