An observational study of the dry period length and its relation to milk yield, health, and fertility in two dairy cow breeds

Sammanfattning

This study evaluated associations between dry period length (DPL) in dairy cows and energy-corrected milk (ECM) production, health, and fertility, using a dataset involving 78 577 lactations in cows of two breeds, Swedish Red (SR) and Swedish Holstein (SH). Herds with at least 20 cows and at least 20 % purebred SR and at least 20 % SH during the year 2015/2016 were included in the dataset. Cows were divided into parity groups 2 and 3 or older and DPL was classified into six 10-day groups (30-39 to 80-89 d). Associations between DPL and the outcome variables were assessed with linear and generalized linear mixed models. Production of ECM at the first three test milkings and the 305-d lactation was highest in the 50-59 d and 60-69 d DPL groups, and lowest in the 30-39 d and 80-89 d groups (p

Nyckelord

Dry period length; Milk yield; Fertility; Mastitis; Breed; Parity

Publicerad i

Preventive Veterinary Medicine
2020, volym: 175, artikelnummer: 104876
Utgivare: ELSEVIER

SLU författare

• Andrée O`Hara, Elisabeth

  • Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
    

• Holtenius, Kjell

  • Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
    

• Båge, Renee

  • Institutionen för kliniska vetenskaper, Sveriges lantbruksuniversitet
    

• von Brömssen, Claudia

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Emanuelson, Ulf

  • Institutionen för kliniska vetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Klinisk vetenskap
Husdjursvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.prevetmed.2019.104876

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/105318