Ostertagia ostertagi antibodies in bulk tank milk from dairy cattle in Italy: A nation-wide survey.
作者： Antonio Bosco , Alessandra Amadesi , Nicola Morandi , Paola Pepe , Maria Paola Maurelli
DOI: 10.1016/J.VPRSR.2018.06.002
关键词:
摘要: The objective of this study was to investigate the exposure Ostertagia ostertagi in dairy cattle herds across Italy through measurement antibody concentration bulk tank milk (BTM) and evaluate possible effect regions, seasons pasture management practices on level parasite. O. levels were determined using a commercial ELISA kit (SVANOVIR® ostertagi-Ab) expressed as optical density ratio (ODR). From March 2015 September 2017, BTM samples collected 1209 farms located 15 regions Northern, Central Southern Italy. As reported previous studies, classified three different categories according follows: (i) positive with ODR values >0.60; (ii) negative <0.30 (iii) grey zone between 0.30 0.60. Finally, differences herd studied one-way analysis variance. overall mean revealed value 0.49 Italy; particular, showed highest than other (p < 0.05). ranged from 0.45 autumn 0.53 spring seasonal difference significant Furthermore, association found access pasture; significantly higher titres 0.0001) antibodies (mean = 0.63) those total-confinement housing 0.42). This study, first its kind Italy, will provide quantitative assessment Italian represents step forward evidence-based medicine for veterinarians, advisors farmers.
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