THE EFFECT OF VACCINATION AGAINST LEPTOSPIRA-INTERROGANS SEROVAR HARDJO INFECTION AT THE TIME OF SERVICE ON PREGNANCY RATES IN DAIRY-COWS

Authors
DHALIWAL GS MURRAY RD DOWNHAM DY HOBSON H
Citation
Gs. Dhaliwal et al., THE EFFECT OF VACCINATION AGAINST LEPTOSPIRA-INTERROGANS SEROVAR HARDJO INFECTION AT THE TIME OF SERVICE ON PREGNANCY RATES IN DAIRY-COWS, Veterinary research, 25(2-3), 1994, pp. 271-274
Citations number
12
Categorie Soggetti
Veterinary Sciences
Journal title
Veterinary research → ACNP
ISSN journal
09284249
Volume
25
Issue
2-3
Year of publication
1994
Pages
271 - 274
Database
ISI
SICI code
0928-4249(1994)25:2-3<271:TEOVAL>2.0.ZU;2-0
Abstract
Fertility data from 16 dairy herds vaccinated against hardjo infection were used to assess pregnancy rates in cattle vaccinated around the d ay of mating. There was no improvement in pregnancy rates 30-60 d afte r vaccination. Pregnancy rates in the period 5 d before and 10 d after vaccination were statistically lower than those found in 30-60 d arou nd vaccination.