EFFICACY OF AN ESCHERICHIA-COLI BACTERIN FOR THE CONTROL OF COLIFORM MASTITIS IN DAIRY-COWS

Citation
P. Clark et De. Vanroekel, EFFICACY OF AN ESCHERICHIA-COLI BACTERIN FOR THE CONTROL OF COLIFORM MASTITIS IN DAIRY-COWS, Agri-Practice, 15(6), 1994, pp. 19-25
Citations number
NO
Categorie Soggetti
Agriculture Dairy & AnumalScience","Veterinary Sciences
Journal title
ISSN journal
0745452X
Volume
15
Issue
6
Year of publication
1994
Pages
19 - 25
Database
ISI
SICI code
0745-452X(1994)15:6<19:EOAEBF>2.0.ZU;2-6
Abstract
Herd surveys have indicated that 95% of clinical mastitis cases in dai ry cows are associated with gram-positive bacteria, and the incidence of mastitis associated with coliform bacteria is increasing. The prese nt study was conducted to determine the efficacy of a commercial Esche richia coli bacterin under severe challenge conditions in the control of experimentally-induced coliform mastitis. Thirty-nine pregnant Hols tein heifers were used in the study. Results indicated that vaccinatio n of cows with the commercially available E. coli bacterin (Bovine Pil i Shield(TM):Grand Laboratories, Inc., Freeman, S.D.) is effective in lessening the clinical signs of E coli-induced mastitis. This reductio n suggests that vaccination can be economically significant. Additiona l longer term studies are needed to substantiate this finding.