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| Bludau, Maren Jana; Maeschli, Ariane; Leiber, Florian; Klocke, Peter; Berezowski, John A.; Bodmer, Michele; Vidondo, Beatriz. |
| Healthy replacement heifers are one of the foundations of a healthy dairy herd. Farm management and rearing systems in Switzerland provide a wide variety of factors that could potentially be associated with intramammary infections (IMI) in early lactating dairy heifers. In this study, IMI with minor mastitis pathogens such as coagulase-negative staphylococci (CNS), contagious pathogens, and environmental major pathogens were identified. Fifty-four dairy farms were enrolled in the study. A questionnaire was used to collect herd level data on housing, management and welfare of young stock during farm visits and interviews with the farmers. Cow-level data such as breed, age at first calving, udder condition andswelling, and calving ease were also recorded.... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2016 |
URL: http://orgprints.org/30291/1/Bludau_2016.pdf |
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| Bludau, Maren Jana; Maeschli, Ariane; Leiber, Florian; Steiner, Adrian; Klocke, Peter. |
| Poor udder health represents a serious problem in dairy production and has been investigated intensively, but heifers generally have not been the main focus of Mastitis control. The aim of this study was to evaluate the prevalence, risk factors and consequences of heifer mastitis in Switzerland. The study included 166,518 heifers of different breeds (Swiss Red Pied, Swiss Brown Cattle and Holstein). Monthly somatic cell counts (SCCs) provided by the main dairy breeding organisations in Switzerland were monitored for 3 years; the prevalence of subclinical mastitis (SCM) was determined on the basis of SCCs ≥100,000 cells/mL at the first test date. The probability of having SCM at the first test date during lactation was modelled using logistic regression.... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/28821/1/Bludau_2014_VetJ.pdf |
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