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United States Department of Agriculture

Agricultural Research Service

Title: Lymphocyte Phenotypes and Plasma Igg Change Following Transport Stress Withor Without Electrolyte Treatments in Calves

Authors
item Eicher, Susan
item Morrow, Julie

Submitted to: Research Workers in Animal Diseases Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: November 8, 1998
Publication Date: N/A

Technical Abstract: Neonatal calves are susceptible to disease, especially after known acute stressors such as transport. A good indicator of animal susceptibility or resistance during the period following acute stress has not been found. We investigated the effect of electrolyte administration on well-being of neonatal calves following transport stress. Fifteen calves were assigned to one of three treatments; control (non-transported calves), transported, or transported with electrolytes. Calves were sampled by jugular venipuncture prior to a four hour transport and overnight penning with same age calves. The following day, calves were transported for four more hours. Calves in the electrolyte treatment then received 1 liter of electrolyte subcutaneously. Calves were sampled on d 4, 8, 11, 15, and 18 of the study. Samples were used for lymphocyte phenotyping: CD4, CD8, gamma delta (TcR1), and WC-1. Two acute phase proteins, haptoglobin and alpha lacid-glycoprotein, and plasma IgG were determined from the plasma. Acute phase proteins did not reflect any transport induced charges. Lymphocyte phenotyping revealed an increase in CD4 at d 4 and a trend for increased CD4 at d 18. CD4:CD8 ratio reflected the pattern of the CD4 positive cells on d 4, with an increase associated with electrolyte administration following transport. Gamma delta T-cell marker increased non-significantly at d 11 and 18 and WC1 did not change with transport. IgG concentrations increased in calves receiving electrolytes at d 18 compared to the other two treatments. These data indicate that electrolyte solution administration to stressed calves may be beneficial by altering lymphocyte populations and antibody concentrations, besides the rehydration benefit.

Last Modified: 11/23/2014
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