1. Effects of injectable trace minerals on humoral and cell-mediated immune responses to Bovine viral diarrhea virus, Bovine herpes virus 1 and Bovine respiratory syncytial virus following administration of a modified-live virus vaccine in dairy calves.
- Author
-
Palomares RA, Hurley DJ, Bittar JH, Saliki JT, Woolums AR, Moliere F, Havenga LJ, Norton NA, Clifton SJ, Sigmund AB, Barber CE, Berger ML, Clark MJ, and Fratto MA
- Subjects
- Animals, Antibodies, Neutralizing blood, Antibodies, Viral blood, Bovine Virus Diarrhea-Mucosal Disease immunology, Bovine Virus Diarrhea-Mucosal Disease prevention & control, Cattle, Herpesviridae Infections immunology, Herpesviridae Infections prevention & control, Herpesviridae Infections veterinary, Immunity, Cellular drug effects, Immunity, Humoral drug effects, Male, Respiratory Syncytial Virus Infections immunology, Respiratory Syncytial Virus Infections prevention & control, Respiratory Syncytial Virus Infections veterinary, Vaccines, Attenuated administration & dosage, Cattle Diseases immunology, Cattle Diseases prevention & control, Diarrhea Viruses, Bovine Viral immunology, Herpesvirus 1, Bovine immunology, Respiratory Syncytial Virus, Bovine immunology, Trace Elements administration & dosage, Viral Vaccines administration & dosage
- Abstract
Our objective was to evaluate the effect of an injectable trace mineral (ITM) supplement containing zinc, manganese, selenium, and copper on the humoral and cell mediated immune (CMI) responses to vaccine antigens in dairy calves receiving a modified-live viral (MLV) vaccine containing BVDV, BHV1, PI3V and BRSV. A total of 30 dairy calves (3.5 months of age) were administered a priming dose of the MLV vaccine containing BHV1, BVDV1 & 2, BRSV, PI3V, and an attenuated-live Mannheimia-Pasteurella bacterin subcutaneously (SQ). Calves were randomly assigned to 1 of 2 groups: (1) administration of ITM SQ (ITM, n=15) or (2) injection of sterile saline SQ (Control; n=15). Three weeks later, calves received a booster of the same vaccine combination SQ, and a second administration of ITM, or sterile saline, according to the treatment group. Blood samples were collected on days 0, 7, 14, 21, 28, 42, 56, and 90 post-vaccination for determination of antibody titer, viral recall antigen-induced IFN-γ production, and viral antigen-induced proliferation by peripheral blood mononuclear cells (PBMC). Administration of ITM concurrently with MLV vaccination resulted in higher antibody titers to BVDV1 on day 28 after priming vaccination compared to the control group (P=0.03). Calves treated with ITM showed an earlier enhancement in PBMC proliferation to BVDV1 following vaccination compared to the control group. Proliferation of PBMC after BVDV stimulation tended to be higher on day 14 after priming vaccination in calves treated with ITM than in the control group (P=0.08). Calves that received ITM showed higher PBMC proliferation to BRSV stimulation on day 7 after priming vaccination compared to the control group (P=0.01). Moreover, calves in the ITM group also had an enhanced production IFN-γ by PBMC after stimulation with BRSV on day 21 after priming vaccination compared to day 0 (P<0.01). In conclusion, administration of ITM concurrently with MLV vaccination in dairy calves resulted in increased antibody titer to BVDV1, and greater PBMC proliferation to BVDV1 and BRSV recall stimulation compared to the control group, suggesting that ITM might represent a promising tool to enhance the humoral and CMI responses to MLV vaccines in cattle., (Copyright © 2016. Published by Elsevier B.V.)
- Published
- 2016
- Full Text
- View/download PDF