| Abstract | The aim of this study was to compare 2 vaccination programs in feedlot calves at ultra-high risk of developing undifferentiated fever (UF)/bovine respiratory disease (BRD). At feedlot arrival, 3882 calves were enrolled in the study and randomly allocated to 2 groups, which were housed by group in 12 pens. At the time of allocation, 1 group (MLV3-BT2) received a multivalent, modified-live viral vaccine containing infectious bovine rhinotracheitis virus (IBRV) and types I and II bovine viral diarrhea virus (BVDV), as well as a Mannheimia haemolytica (MH) and Pasteurella multocida bacterin-toxoid. The other group (MLV4-BT1) received a vaccine containing IIBRV, type I BVDV, bovine respiratory syncytial virus, and parainfluenza-3 virus, as well as a MH bacterin-toxoid. At an average of 69 days post arrival, the groups received their respective viral vaccines. The initial UF treatment, overall chronicity, overall wastage, overall mortality, and BRD mortality rates were significantly (P < 0.05) lower in the MLV3-BT2 group than in the MLV4-BT1 group. Average daily gain and the proportions of yield grade Canada 3 and quality grade E carcasses were significantly (P < 0.05) higher in the MLV3-BT2 group than in the MLV4-BT1 group. No significant (P > or = 0.05) difference in the dry matter intake to gain ratio was detected between the 2 groups. In economic terms, there was a net advantage of $20.86 CDN/animal in the MLV3-BT2 group. This study demonstrates that it is more cost effective to use an MLV3-BT2 vaccination program than a MLV4-BT1 vaccination program in feedlot calves at ultra-high risk of developing UF/BRD. |
| Authors | Brian K Wildman, Tye Perrett, Sameeh M Abutarbush, P Timothy Guichon, Tom J Pittman, Calvin W Booker, Oliver C Schunicht, R Kent Fenton, G Kee Jim
(Affiliation: Feedlot Health Management Services Ltd., PO Box 140, Okotoks, Alberta T1S 2A2.)
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| Journal | The Canadian veterinary journal. La revue vétérinaire canadienne
(Can Vet J)
Vol. 49
Issue 5
Pg. 463-72
(May 2008)
ISSN: 0008-5286 Canada |
| PMID | 18512457
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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| Chemical References |
- Bacterial Vaccines
- Vaccines, Combined
- Viral Vaccines
|
| Topics |
- Animals
- Animals, Newborn
- Bacterial Vaccines
(administration & dosage)
- Body Composition
- Bovine Respiratory Disease Complex
(prevention & control)
- Cattle
(growth & development)
- Cattle Diseases
(prevention & control)
- Diarrhea Viruses, Bovine Viral
(immunology)
- Mannheimia haemolytica
(immunology)
- Parainfluenza Virus 3, Bovine
(immunology)
- Pasteurella multocida
(immunology)
- Random Allocation
- Respiratory Syncytial Virus, Bovine
(immunology)
- Risk Factors
- Vaccination
(veterinary)
- Vaccines, Combined
- Viral Vaccines
(administration & dosage)
- Weight Gain
|
