Ranch-management factors associated with antibody seropositivity for Neospora caninum in consignments of beef calves in Texas, USA

Citation
Ks. Barling et al., Ranch-management factors associated with antibody seropositivity for Neospora caninum in consignments of beef calves in Texas, USA, PREV VET M, 52(1), 2001, pp. 53-61
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
PREVENTIVE VETERINARY MEDICINE
ISSN journal
0167-5877 → ACNP
Volume
52
Issue
1
Year of publication
2001
Pages
53 - 61
Database
ISI
SICI code
0167-5877(20011102)52:1<53:RFAWAS>2.0.ZU;2-X
Abstract
A study was conducted with a 1998 retained-ownership population of Texas (U SA) beef calves to determine the ranch-management practices associated with calf seroprevalence to Neospora caninum. Management practices of 76 Texas ranches that consigned 760 calves to a retained-ownership feedlot program w ere reviewed from a mailed questionnaire. Ninety-nine of 760 (13%; 95% CI, 9.4%, 17.7%) calves were positive to N. caninum and 59% of the ranches cons igned at least one positive calf. In the logistic multiple-regression model which controlled for overdispersion, increased odds of calf-level seroposi tivity was associated with seasonal calving patterns, with stocking > 1 cow /calf unit/2.2 ha, using a round-bale feeder, allowing wildlife access to t he weaning supplement, and self-rea-red replacement heifers. However, decre ased odds of seropositivity was associated with using a cattle-working dog and with using a self-contained cattle feeder. There was substantial overdi spersion. due to ranch. (C) 2001 Elsevier Science B.V. All rights reserved.