کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5543707 1554146 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A matched case-control study comparing udder health, production and fertility parameters in dairy farms before and after the eradication of Bovine Virus Diarrhoea in Switzerland
ترجمه فارسی عنوان
یک مطالعه مورد-شاهد همبستگی شده با شاخص های سلامتی، تولید و باروری مزرعه در مزارع لبنی قبل و بعد از ریشه کنی ویروس اسهال گاوی در سوئیس
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
Parameters were first compared between (i) case and control herds before eradication, and (ii) Period 1 and Period 2 for case herds only. Milk yield (MY), bulk milk somatic cell count (BMSCC), prevalence of subclinical mastitis (SCM), and non-return rate (NRR) showed a p-value < 0.25 in at least one of the univariable comparisons and were thus further analyzed with a multilevel mixed-effects model to account for repeated measures over time. In order to assess whether changes in health status over time were due to BVD eradication, an interaction variable between period and group (case-control) was created (IA). Except for MY, the IA was significant for all parameters modelled. Despite an overall p-value of 0.27, case herds tended to have a higher MY after eradication (β = 0.53, p = 0.050). For BMSCC and SCM, case herds had higher values than controls in both periods; udder health was significantly improved in control herds and it remained stable in case herds, with a slight decrease of BMSCC (β = −0.19, p = 0.010). Finally, among fertility parameters, NRR showed a general improvement but it was significant only in control herds (β = 0.29, p = 0.019). Even though the effects of the eradication programme measured in this study were less pronounced than expected, 73% of the participants of this study had a positive attitude towards the campaign.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Preventive Veterinary Medicine - Volume 144, 1 September 2017, Pages 29-39
نویسندگان
, , , , , , ,