Acquisition of passive immunity in domestic ungulates

Formulation of colostrum supplements, colostrum replacers and acquisition of passive immunity in neonatal calves.

Provision of an adequate mass of IgG from maternal colostrum is essential to health and survival of neonatal calves. Colostrum supplements (CS) have been developed to provide supplemental immunoglobulin when maternal colostrum is of poor quality. However, colostrum replacers (CR) that provide > or = 100 g of IgG have not been formulated. Our objective was to determine the absorption of IgG in n...

How Do Domestic Ungulates Select Nutritious Diets on Rangelands?

Animal learning has been shown to play a major role in the development of diet selection by domestic ungulates. Dr. Frederick Provenza and his associates at Utah State University have conducted a series of experiments over the past 15 years to learn how physiological and behavioral mechanisms govern diet selection. In this paper, we synthesize several key diet selection concepts presented in 4 ...

Passive Immunity in Avian Malaria

The effect of therapy with immune serum has been studied in thirty-two cases of Plasmodium circumflexum infection, all of them produced by blood inoculation. Eighteen of these cases never showed parasites, and seven others developed infections which were definitely milder than those of the controls. The therapeutic serum was in all cases obtained from chronic cases which had previously been sup...

Passive Transfer of Transplantation Immunity

Passive transfer of transplantation immunity was accomplished in inbred guinea pigs with tritiated thymidine-labeled lymphoid cells sensitized to homologous tissues. Autoradiographs of the homologous skin graft sites disclosed the presence of relatively few or no labeled cells at the site of rejection. Passive transfer of transplantation immunity was also accomplished with sensitized lymphoid c...

Passive Voice in Narratives Describing Domestic Violence