Factors associated with passive immunity transfer in dairy calves: combined effect of delivery time, amount and quality of the first colostrum meal
| Autor: | Paolo Paparella, Marta Brscic, A. Barberio, Barbara Contiero, Flaviana Gottardo, Annalisa Stefani, Isabella Lora, Lebana Bonfanti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Farms
040301 veterinary sciences medicine.medical_treatment animal diseases passive immunity transfer Passive immunity SF1-1100 0403 veterinary science Animal science fluids and secretions Pregnancy medicine Animals Dairy farming Meal calf business.industry Immunization Passive 0402 animal and dairy science food and beverages management factor 04 agricultural and veterinary sciences 040201 dairy & animal science colostrum Animal Science and Zoology Animal culture Logistic Models Immunoglobulin G Immunology Mixed effects Colostrum Cattle Female business Blood sampling |
| Zdroj: | Animal, Vol 12, Iss 5, Pp 1041-1049 (2018) |
| ISSN: | 1751-7311 |
| Popis: | Despite the well-known importance of an adequate colostral immunoglobulin (Ig) transfer to calf health and survival, failed transfer of passive immunity (FTPI) remains a widespread problem in dairy farming. The aim of this study was to investigate the management factors associated with FTPI in newborn calves, evaluating particularly the combined effect of delivery time, amount and quality of the first colostrum meal. The study was conducted from March to August 2014 on 21 Italian dairy farms. Farmers were asked as first to answer a farm-level questionnaire on calf management. Blood sampling was then performed on overall 244 calves (1 to 5 days of age) born from Holstein cows, and a sample of the first colostrum meal of each calf was collected. Individual information on calves and the respective colostrum management were recorded. Serum and colostrum Ig concentrations were assessed by electrophoresis. A mixed effects multivariable logistic regression model was used to investigate the association of the variables obtained from both the management questionnaire and the individual calf data with FTPI (calf serum Ig concentration 87.6 g/l) within 1.0 h from birth. Considerable improvements are still needed about colostrum management for newborn calves in dairy farms. The results of this study will help in developing farm-specific programs for reducing the occurrence of FTPI. |
| Databáze: | OpenAIRE |
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